| 1. |
- Andreasson, Ingrid, et al.
(author)
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Functional outcome after corrective osteotomy for malunion of the distal radius: a randomised, controlled, double-blind trial
- 2020
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 44:7, s. 1353-1365
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Journal article (peer-reviewed)abstract
- Purpose The purpose of this randomised, controlled, double-blind trial was to evaluate functional outcome during the first year after corrective osteotomy for malunited distal radius fractures, with or without filling the osteotomy void. Method Patients were randomised to receive a HydroSet bone substitute or no graft. Cortical contact was maintained and stabilisation of the osteotomy was carried out with a DiPhos R- or RM Plate. To evaluate subjective functional outcome, the Patient-Rated Wrist Evaluation (PRWE), the Quick Disabilities of the Arm, Shoulder and Hand Questionnaire (Q-DASH), the Canadian Occupational Performance Measure (COPM) and the RAND-36 were used. Moreover, range of motion and grip strength were measured by blinded evaluators. Evaluations were made pre-operatively and three, six and 12 months post-operatively. Results There were no significant differences between the groups at any time point post-operatively with respect to any of the PROMs that were used or range of motion or grip strength (p> 0.05). In both groups, there was a significant improvement at the 12-month follow-up compared with pre-operatively for the PRWE, the Q-DASH and the COPM satisfaction scores. The RAND-36 revealed no significant differences except for two domains, in which there was an improvement in the treatment group (p< 0.05). For grip strength and for range of motion in all movement directions, except dorsal extension, there was a significant improvement in both groups (p< 0.05). Conclusion There is no significant difference in functional outcome during the first year after corrective open-wedge distal radius osteotomy, where cortical contact is maintained, regardless of whether or not bone substitute to fill the void is used.
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| 2. |
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| 3. |
- Aspenberg, Per
(author)
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Stimulation of tendon repair : Mechanical loading, GDFs and platelets. a mini-review
- 2007
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 31:6, s. 783-789
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Research review (peer-reviewed)abstract
- The repair of subcutaneous tendon ruptures can be stimulated by a single application of one of several growth factors [e.g. platelet-derived growth factor (PDGF), transforming growth factor (TGF)-beta, insulin-like growth factor (IGF)-1, vascular endothelial growth factor (VEGF), bone morphogenetic proteins (BMPs) like growth differentiation factor (GDF)-5, -6, -7] or by a thrombocyte concentrate (PRP). The response to these measures is dependent on the mechanical microenvironment, which is crucial for repair. So far, almost all research has been limited to rodent models, mostly using the rat Achilles tendon. Ruptured human Achilles tendons appear to be mechanically loaded in spite of immobilisation. This suggests that the mechanical microenvironment might be favourable for the clinical use of growth factors or platelets for this indication. New methods to quantitate human Achilles tendon repair have been developed. © 2007 Springer-Verlag.
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| 4. |
- Axenhus, Michael, et al.
(author)
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Long-term follow-up of bone density changes in total hip arthroplasty : comparative analysis from a randomized controlled trial of a porous titanium construct shell vs. a porous coated shell.
- 2024
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In: International Orthopaedics. - : Springer Nature. - 0341-2695 .- 1432-5195.
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Journal article (peer-reviewed)abstract
- PURPOSE: Periacetabular bone loss poses a considerable challenge in the longevity and stability of acetabular implants used in total hip arthroplasty (THA). Innovations in implant design, specifically the introduction of three-dimensional (3D) porous titanium constructs, might reduce bone resorption. The purpose of this study was to build upon our previous randomized controlled trial, which found no change in periacetabular bone loss between a 3D porous none-hydroxyapatite coated titanium cup and a standard porous hydroxyapatite coated cup over a two year follow-up period by extending the follow-up duration to ten years post-surgery.METHODS: This was a single-centre, long-term follow-up study conducted over a ten year period in patients who had previously participated in a randomized controlled trial comparing a 3D porous titanium construct shell (PTC group) with a standard porous hydroxyapatite coated titanium shell (PC-group). The primary outcome measured was the change in bone mineral density (BMD) within four specific periacetabular zones, alongside overall bone loss, which was assessed through BMD in the lumbar spine at two, six and ten years postoperatively. Secondary outcomes included clinical outcome measures.RESULTS: In total, 18 in the PTC and 20 in the PC group were analysed for the primary endpoint up to ten years. The mean bone mineral density in zones 1-4 was 3.7% higher in the PTC group than in the PC group at six years postoperatively and 12.0% higher at ten years. Clinical outcomes, and the frequency of adverse events did not differ between the groups.CONCLUSIONS: The PTC group displayed superior long-term bone preservation compared to the PC group while maintaining similar clinical outcomes up to ten years postoperatively. Although with a small sample size, our findings suggest that porous titanium cups have the potential to minimize BMD loss around the cup which could contribute to improving THA outcomes and implant durability.
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| 5. |
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| 6. |
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| 7. |
- Campbell, David, et al.
(author)
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Early migration characteristics of a hydroxyapatite-coated femoral stem : an RSA study.
- 2011
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In: International Orthopaedics. - : Springer. - 0341-2695 .- 1432-5195. ; 35:4, s. 483-488
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Journal article (peer-reviewed)abstract
- Measurement of early stem subsidence can be used to predict the likelihood of long-term femoral component loosening and clinical failure. Data that examines the early migration pattern of clinically proven stems will provide clinicians with useful baseline data with which to compare new stem designs. This study was performed to evaluate the early migration pattern of a hydroxyapatite-coated press-fit femoral component that has been in use for over ten years. We enrolled 30 patients who underwent THA for osteoarthritis. The median age was 70 years (range, 55-80 years). Patients were clinically assessed using the Harris hip score. Radiostereometric analysis was used to evaluate stem migration at three to four days, six months, one year and two years. We observed a mean subsidence of 0.73 mm at six months, 0.62 mm at one year and 0.58 mm at two years and a mean retroversion of 1.82° at six months, 1.90° at one year and 1.59° at two years. This data suggests that subsidence is confined to the first six months after which there was no further subsidence. The results from this study can be compared with those from novel cementless stem designs to help predict the long-term outcome one may expect from new cementless stem designs.
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| 8. |
- Cebatorius, Algimantas, et al.
(author)
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Choice of approach, but not femoral head size, affects revision rate due to dislocations in THA after femoral neck fracture: results from the Lithuanian Arthroplasty Register
- 2015
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 1432-5195 .- 0341-2695. ; 39:6, s. 1073-1076
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Journal article (peer-reviewed)abstract
- Purpose Hip dislocation after arthroplasty for femoral neck fractures (FNF) remains a serious complication. The aim of our study was to investigate FNF patients treated with THA, with a special focus of comparing the effect of surgical approach and femoral head size on the risk of revision for dislocation. Methods Data were derived from the Lithuanian Arthroplasty Register, and we calculated the cumulative revision rates after surgery. For survival analysis, we used revision due to dislocation as an end-point. Cox proportional hazards models were used to analyse the influence of various covariates (age, gender, femoral head size, surgical approach). Results A total of 8,813 primary THAs were registered from 1 January 2011 to 31 December 2013, of which 1,412 were due to FNF: 899 involved 28-mm femoral heads and the remaining 513 received 32-mm heads. The posterior approach was used in 1,156 cases and the anterolateral approach in 256.. At the end of the follow-up period, 74 hips had been revised for recurrent dislocation. Cox regression adjusting for age, gender and head size showed that the posterior approach had 2.3-times [95% confidence interval (CI): 1.0-5.0, p = 0.04] greater risk of revision for dislocation Conclusions We conclude that in order to reduce the early dislocation rate in FNF patients treated with THA, it is more effective to use the anterolateral approach than it is to select a femoral head size of 32 mm instead of 28 mm.
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| 9. |
- Cserhati, P, et al.
(author)
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Hip fractures in Hungary and Sweden - differences in treatment and rehabilitation
- 2002
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 1432-5195 .- 0341-2695. ; 26:4, s. 222-228
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Journal article (peer-reviewed)abstract
- Data of 1,337 consecutive hip fracture patients were registered during I year within a prospective comparative multicenter study comparing osteosynthesis techniques and rehabilitation results in Budapest, Hungary, in Sundsvall, northern Sweden, and in Lund, southern Sweden. In Budapest the mean age was 4-5 years lower than in Sweden, and more patients lived in their own home (91% versus 70% and 62%). Less intracapsular (41% versus 54% and 54%) and more trochanteric fractures (52% versus 40% and 35%) were observed in Budapest. Many more Hungarian patients returned home (68% versus 54% and 33%); however, their mortality rate 4 months later significantly exceeded that of the Swedish centres (24% versus 15% and 13%), and more had severe pain in the operated hip (27% versus 17% and 15%). Four months after double nail osteosynthesis of displaced cervical fractures, more patients (28%) had severe hip pain than after hemiarthroplasty (16%) in Budapest as compared to Lund or Sundsvall (19% and 22%). Mortality rate after 4 months following hemiarthroplasty and nailing (36% and 20%) was significantly higher than in the Swedish centres (14% and 11%).
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| 10. |
- Dahl, Jon, et al.
(author)
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Less wear with aluminium-oxide heads than cobalt-chrome heads with ultra high molecular weight cemented polyethylene cups : A ten-year follow-up with radiostereometry
- 2012
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 36:3, s. 485-490
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Journal article (peer-reviewed)abstract
- Purpose Wear is a major contributor to osteolysis and aseptic loosening of total hip replacements (THR). Both alumina (Al2O3) and cobalt-chrome (CoCr) femoral heads are commonly used. We investigated wear comparing alumina heads to cobalt-chrome heads against conventional cemented polyethylene (PE) cups for up to ten years. Methods Linear wear was measured with radiostereometry (RSA). Our material was derived from two prospective randomised trials that investigated fixation of femoral stems, not wear, and was evaluated retrospectively (Level III). Results The mean (95% CI) proximal head penetration was 0.96 mm (0.68-1.23) in the cobalt-chrome group and 0.42 mm (0.30-0.53) in the alumina group at ten years (P=0.001). The mean (95% CI) 3D penetration was 1.07 mm (0.79-1.35) and 0.53 mm (0.38-0.63), respectively, at ten years (P=0.001). Conclusion Alumina heads performed better than cobalt-chrome heads in this study after ten-year follow-up.
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| 11. |
- Digas, Georgios, 1963, et al.
(author)
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Five-year DEXA study of 88 hips with cemented femoral stem
- 2009
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 33:6, s. 1495-500
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Journal article (peer-reviewed)abstract
- We performed repeated dual-energy X-ray absorptiometry (DEXA) measurements over five years in a homogeneous patient population to study the effect of a cemented stem on proximal femoral bone remodelling. Data from 88 patients (88 hips) implanted with total hip arthroplasty (THA) prostheses were extracted from three randomised studies. Femoral bone mineral density (BMD) was measured using a Lunar DPX-IQ densitometer for five years postoperatively. At one year the BMD changes had decreased between -2.0% [region of interest (ROI) 1] and -11.5% (ROI 7). During the follow-up period the BMD initially increased during the second year and thereafter decreased again in ROIs 5, 6 and 7. The loss of BMD at five years was more pronounced in region 7 (12.9%) and decreased with increasing age, total hip replacement (THR) on the right side and decreasing weight of the patient. We found that after the initial phase of early bone loss a period of recovery follows. Thereafter the BMD decreases again, which probably reflects the normal ageing of bone after uncomplicated cemented THA.
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| 12. |
- Eneqvist, Ted, 1982, et al.
(author)
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Can patient-reported outcomes predict re-operations after total hip replacement?
- 2018
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 42:2, s. 273-279
-
Journal article (peer-reviewed)abstract
- © 2018 The Author(s) Purpose: We investigated if patient-reported outcomes (PROMs) one year after total hip replacement (THR) can predict the risk of re-operation using data from the Swedish Hip Arthroplasty Register. Methods: A total of 75,899 patients with THR due to osteoarthritis operated in 2002–2014 were included. We used Kaplan-Meier and Cox regression to investigate the relationship between one-year post-operative PROMs and risk of re-operation (all types of further hip surgery). The predictive power of the model and post-operative PROMs were evaluated by concordance index (C). Results: Kaplan-Meier estimates for not being re-operated at eight years was 95.5% (95%CI; 95.3–95.8). Cox regression analyses showed that all PROMs, except for EQ-VAS, were associated with re-operation. The full model had a concordance index of 0.68. Satisfaction (C = 0.65) and pain (C = 0.65) in isolation had the highest predictive power. Conclusions: Worse PROMs predicted higher risk of re-operation. Therefore, we believe PROMs may be helpful in identifying patients at risk for re-operation and timely address their problems.
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| 13. |
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| 14. |
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| 15. |
- Fredriksson, A-S, et al.
(author)
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Results of the Putti-Platt operation for recurrent anterior dislocation of the shoulder
- 1991
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In: International Orthopaedics. - 0341-2695 .- 1432-5195. ; 15:3, s. 185-8
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Journal article (peer-reviewed)abstract
- Between 1973 and 1981, 101 patients had a Putti-Platt repair for recurrent dislocation of the shoulder; 89 of them were followed up and 43 underwent a clinical examination, 23 being assessed with the Cybex dynamometer. The 46 who did not attend were interviewed by telephone. The mean follow up time was 8 +/- 2 years (range 5-14 years). Redislocation occurred in 18 patients (20%), but this was twice as high in patients who were aged under 26 years at the time of operation compared with those who were older (29% versus 13%). The time of recurrence was between 1 and 11 years after operation. A decrease in strength and power of abduction, internal and external rotation, was found in the affected shoulder. Restriction of all measured movements, particularly external rotation, was also found in all patients. Nevertheless most had a high functional score and relatively few symptoms. We conclude that the Putti-Platt procedure has a high recurrence rate in younger patients, and we hesitate to recommend it for young active individuals.
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| 16. |
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| 17. |
- Halldin, Klas, 1967, et al.
(author)
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Is increased segmental motion early after lumbar discectomy related to poor clinical outcome 5 years later?
- 2005
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In: Int Orthop. - : Springer Science and Business Media LLC. - 0341-2695. ; 29:4, s. 260-4
-
Journal article (peer-reviewed)abstract
- The purpose of the study was to compare segmental motion in the early postoperative phase after lumbar discectomy to the outcome 5 years postoperatively. The study population had radiologically verified symptomatic L4-L5 or L5-S1 lumbar disc herniation and was referred with an indication for lumbar discectomy. Radiostereometry was performed in the supine and standing positions. The L4-L5 and L5-S1 segments were analysed separately. L4-L5 segments adjacent to the operated L5-S1 segment constituted a reference segment for the operated L4-L5 and vice versa. Twenty-one patients were available for the follow-up at 5 years. Outcome was classified as functionally good or poor. Repeated or planned repeat surgery at the same level during follow-up was considered as poor outcome. The L4-L5 segments in the poor group showed different direction of sagittal rotation (anterior versus posterior) of L4 on L5 compared with the good group (p<0.01). On the L5-S1 segment, patients with poor outcome displayed an increased anterior translation of about 1 mm (p<0.01) compared with the reference segments. Our study suggests that increased inducible vertebral displacement in the early postoperative phase after discectomy is associated with a poor clinical outcome.
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| 18. |
- Halldin, Klas, 1967, et al.
(author)
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The effect of standard lumbar discectomy on segmental motion: 5-year follow-up using radiostereometry
- 2005
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In: Int Orthop. - : Springer Science and Business Media LLC. - 0341-2695. ; 29:2, s. 83-7
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Journal article (peer-reviewed)abstract
- We measured the effects of lumbar discectomy on segmental motion over a period of 5 years. Twenty-four patients with lumbar disc herniation were treated by standard lumbar discectomy at the L4-L5 or L5-S1 level. Peroperatively, tantalum markers were inserted into L4, L5, and the sacrum. Radiostereometric analysis was performed at discharge from hospital and 5 years postoperatively. The treated level was compared with the corresponding untreated level. Thus, patients who had discectomy at the L4-L5 level served as controls for patients with L5-S1 lesions and vice versa. The relative rotation and translation in relation to the three cardinal axes were calculated. Inducible displacements over the two discs were calculated between the supine and standing positions. At the L4-L5 level, there were no differences in inducible displacements between the operated and control levels at discharge or 5 years postoperatively. At the L5-S1 level we found decreasing inducible movement in the sagittal plane over time for discectomy patients. The reason for decreasing mobility over time after discectomy at the L5-S1 but not at the L4-L5 level is unknown. Mechanical factors caused by the more vertical orientation of the L5-S1 disc in combination with degenerative changes could be one explanation.
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| 19. |
- Halldin, Klas, 1967, et al.
(author)
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Three-dimensional radiological classification of lumbar disc herniation in relation to surgical outcome
- 2009
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 33:3, s. 725-30
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Journal article (peer-reviewed)abstract
- Centrally located lumbar disc herniations have been reported to be of predictive value for poor post-operative clinical outcome. One hundred and fifty patients undergoing lumbar disc herniation surgery were prospectively included. Herniation-related parameters, including the grading of contours, were assessed from pre-operative computed tomography (CT) and magnetic resonance imaging (MRI) images using a new three-dimensional grading system. The radiological findings were compared with outcome parameters two years post-operatively (patient-assessed pain, function/health scores and evaluation by an independent observer). An intra- and inter-observer validation of the classification was performed in a subgroup of patients. High intra-observer and good inter-observer reliability for both CT and MRI was seen. In the study population, no relation between the distribution or size of the herniations and outcome at 2-year follow-up were found. The distribution and size of the lumbar disc herniations with the three-dimensional classification were not found to be of importance for the clinical outcome.
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| 20. |
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| 21. |
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| 22. |
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| 23. |
- Hultenheim Klintberg, Ingrid, 1959, et al.
(author)
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Consensus for physiotherapy for shoulder pain
- 2015
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 39:4, s. 715-720
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Journal article (peer-reviewed)abstract
- Purpose Shoulder pain is a common disorder. Despite growing evidence of the importance of physiotherapy, in particular active exercise therapy, little data is available to guide treatment. The aim of this project was to contribute to the development of an internationally accepted assessment and treatment algorithm for patients with shoulder pain. Methods Nine physiotherapists with expertise in the treatment of shoulder dysfunction met in Sweden 2012 to begin the process of developing a treatment algorithm. A questionnaire was completed prior to the meeting to guide discussions. Virtual conferences were thereafter the platform to reach consensus. Results Consensus was achieved on a clinical reasoning algorithm to guide the assessment and treatment for patients presenting with local shoulder pain, without significant passive range of motion deficits and no symptoms or signs of instability. The algorithm emphasises that physiotherapy treatment decisions should be based on physical assessment findings and not structural pathology, that active exercises should be the primary treatment approach, and that regular re-assessment is performed to ensure that all clinical features contributing to the presenting shoulder pain are addressed. Consensus was also achieved on a set of guiding principles for implementing exercise therapy for shoulder pain, namely, a limited number of exercises, performed with appropriate scapulo-humeral coordination and humeral head alignment, in a graduated manner without provoking the presenting shoulder pain. Conclusion The assessment and treatment algorithm presented could contribute to a more formal, extensive process aimed at achieving international agreement on an algorithm to guide physiotherapy treatment for shoulder pain.
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| 24. |
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| 25. |
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| 26. |
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| 27. |
- Isacsson, Anders, et al.
(author)
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Incidence and concomitant chondral injuries in a consecutive cohort of primary traumatic patellar dislocations examined with sub-acute MRI
- 2023
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 47:4, s. 973-981
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Journal article (peer-reviewed)abstract
- Purpose: To present age- and sex-specific cumulative annual incidences of primary traumatic lateral patellar dislocation (LPD) and to detail patient characteristics and concomitant chondral injuries including osteochondral fractures, as visualized on magnetic resonance imaging (MRI), in a large consecutive cohort of knee-injured individuals. Methods: Data on primary traumatic lateral patellar dislocations were collected from a large consecutive cohort of knee injuries examined with sub-acute MRI in a single centre with a well-defined catchment area. Annual incidences for different age-groups in relation to gender were calculated together with the risk of concomitant chondral and osteochondral injury, during sports and in general. Results: A total of 184 primary patellar dislocations were identified in the cohort of 1145 acute knee injuries (n=175) and surgical records (n=9). Knee MRI was performed within a median of six days of injury. Median age of patients with primary LPD was 16 years (interquartile range, 14–21; range, 9–47) and 41% were females. Males were significantly older than females at the time of injury (median age 17 vs. 15, P = 0.021) and sustained their primary LPD during sports more often than females (65 vs. 40%, P < 0.001). Primary LPD occurred most frequently at the age of 13 to 15 years where the annual incidence was 125 (95% CI, 96–160) per 100,000 persons. The overall annual incidence of primary LPD was 14 (95% CI, 12–16) per 100,000 persons, with a predominance of males versus females (17 vs. 11, P = 0.01). Concomitant lesions to joint surfaces were displayed on MRI or during surgery in 75 (43%) knees. Osteochondral fractures were seen in 32 knees (18%). We found no statistically significant difference in the risk of osteochondral fracture between those injured during sports or during leisure activity (14 vs. 24%, P = 0.08). Conclusions: The annual incidence of first-time patellar dislocation was found to be 14 per 100,000 individuals with the highest incidence found among those aged 13–15 years. Primary LPD was more common among males and was sustained during sports activity in 55% of the cases. Associated injuries to the chondral surfaces should be expected in 43% of knees with primary LPD where 18% represent osteochondral fractures.
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| 28. |
- Jin, Zhan-Kui, et al.
(author)
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Outcomes of total knee arthroplasty in the adult Kashin-Beck disease with severe osteoarthritis.
- 2019
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In: International Orthopaedics. - : Springer. - 0341-2695 .- 1432-5195. ; 43:2, s. 323-331
-
Journal article (peer-reviewed)abstract
- PURPOSE: Kashin-Beck disease (KBD) is an endemic osteoarthropathy, and the severe knee pain and functional limitations were seriously affecting the quality of life in patients with end-stage KBD. We retrospectively evaluated the clinical outcomes and the quality of life in KBD patients with total knee arthroplasty (TKA).METHODS: A total of 22 subjects (25 knees) suffered KBD with severe knee pain and underwent primary TKA. Knee pain was measured by visual analogue scale (VAS), and the knee function was evaluated by Knee Society Clinical Rating System Score (KSS). KBD Quality of Life (KBDQOL) was used to evaluate the quality of life in KBD patients before and after TKA.RESULTS: There were no major complications after TKA. The levels of VAS score were obviously deceased in post-operation than that in pre-operation. The levels of KSS score were increased in one year after TKA compared with the pre-operative values, and it maintained a higher level on three years after TKA. The average KBDQOL score level of each domain in pre-operation and one and three years after TKA was increased accordingly. The average scores of physical function, activity limitation, support of society, mental health, and general health in one year after TKA were significantly higher than those in pre-operation.CONCLUSIONS: TKA can reduce knee pain, improve knee function, and improve the quality life in KBD patients. KBDQOL questionnaire may be a promising instrument for assessing the quality life in KBD patients.
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| 29. |
- Johansson, Torsten, et al.
(author)
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Heterotopic bone formation following internal fixation or arthroplasty for displaced femoral neck fractures: a prospective randomized study
- 2001
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 25:4, s. 223-225
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Journal article (peer-reviewed)abstract
- One hundred hips in 99 patients of 75 years or older, with a displaced femoral neck fracture, were studied for heterotopic ossification (HO). The patients were randomized to either internal fixation or total hip arthroplasty (THA). In the THA group HO was found in 32 of 45 hips compared with 1 of 39 in the internal fixation group (P<0.0012). The frequency of HO after THA corresponds well with findings in other studies on patients receiving THA for osteoarthrosis. In cervical fractures the surgical procedure of total hip replacement seems to be a prerequisite for HO, indicating that the procedure itself is more important than the patient's age and the diagnosis. Severe symptoms due to HO were found in only one patient. HO following THA for a femoral neck fracture is of little clinical importance and prophylaxis is unnecessary.
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| 30. |
- Johansson, Torsten, et al.
(author)
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The total costs of a displaced femoral neck fracture: comparison of internal fixation and total hip replacement. A randomised study of 146 hips
- 2006
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 30:1, s. 1-6
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Journal article (peer-reviewed)abstract
- We randomised 143 patients –age 75 years or older–with displaced femoral neck fracture to either internal fixation or total hip replacement (THR) and compared the socio-economic consequences. In the internal fixation group, 34 of 78 hips underwent secondary surgery. In the THR group, 12 of 68 hips dislocated, the majority in mentally impaired patients. We calculated the total hospital costs for two years after operation. When secondary surgery was included, there was no difference in costs between the internal fixation and THR groups, or between the mentally impaired and lucid subgroups. The costs to the community were calculated comparing the baseline cost before surgery with the average cost per month during the first postoperative year. No difference was found between the treatment groups. The Harris hip scores were higher in the THR group, and pain was more common in the internal fixation group. In lucid patients, THR gives a better clinical result at the same cost.
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| 31. |
- Kadum, Bakir, et al.
(author)
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Clinical and radiological outcome of the Total Evolutive Shoulder System (TESSA (R)) reverse shoulder arthroplasty : a prospective comparative non-randomised study
- 2014
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 38:5, s. 1001-1006
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Journal article (peer-reviewed)abstract
- Purpose The aims of this study were to assess the function and quality of life after the Total Evolutive Shoulder System (TESS) reverse shoulder arthroplasty (RSA), to evaluate the radiological stability of the stemless version and to address the effect of arm lengthening and scapular notching (SN) on the outcome. Methods This was a prospective comparative non-randomised study. A total of 37 consecutive patients (40 shoulders) underwent TESS RSA between October 2007 and January 2012; 16 were stemless and 26 were stemmed. At a mean follow-up of 39 months (15-66), we evaluated range of motion (ROM), pain and functional outcome with QuickDASH and quality of life with EQ-5D score. Radiologically, component positioning, signs of loosening, SN and arm length difference were documented. Results We found a significant improvement in functional outcome and reduction of pain in both stemmed and stemless groups. No humeral loosening was evident, but there were four glenoid loosenings. In 12 shoulders that developed SN, seven already had scapular bone impression (SBI) evident on initial post-operative radiographs. Glenoid overhang seemed to decrease the risk of SN. Arm lengthening was associated with better EQ-5D but did not influence ROM or functional outcome. Conclusions Reverse shoulder arthroplasty markedly improved shoulder function. SN is of concern in RSA, but proper positioning of the glenoid component may prevent its development.
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| 32. |
- Kadum, Bakir, 1976-, et al.
(author)
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Geometrical analysis of stemless shoulder arthroplasty : a radiological study of seventy TESS total shoulder prostheses
- 2016
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In: International Orthopaedics. - : Springer. - 0341-2695 .- 1432-5195. ; 40:4, s. 751-758
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Journal article (peer-reviewed)abstract
- Purpose The aim of this study was to investigate the ability of a stemless shoulder prosthesis to restore shoulder anatomy in relation to premorbid anatomy. Methods This prospective study was performed between May 2007 and December 2013. The inclusion criteria were patients with primary osteoarthritis (OA) who had undergone stemless total anatomic shoulder arthroplasty. Radiographic measurements were done on anteroposterior X-ray views of the glenohumeral joint. Results Sixty-nine patients (70 shoulders) were included in the study. The mean difference between premorbid centre of rotation (COR) and post-operative COR was 1 ± 2 mm (range −3 to 5.8 mm). The mean difference between premorbid humeral head height (HH) and post-operative HH was −1 ± 3 mm (range −9.7 to 8.5 mm). The mean difference between premorbid neck-shaft angle (NSA) and post-operative NSA was −3 ± 12° (range −26 to 20°). Conclusions Stemless implants could be of help to reconstruct the shoulder anatomy. This study shows that there are some challenges to be addressed when attempting to ensure optimal implant positioning. The critical step is to determine the correct level of bone cut to avoid varus or valgus humeral head inclination and ensure correct head size.
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| 33. |
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| 34. |
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| 35. |
- Mohaddes, Maziar, 1974, et al.
(author)
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Use of dual-mobility cup in revision hip arthroplasty reduces the risk for further dislocation: analysis of seven hundred and ninety one first-time revisions performed due to dislocation, reported to the Swedish Hip Arthroplasty Register.
- 2017
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In: International orthopaedics. - : Springer Science and Business Media LLC. - 1432-5195 .- 0341-2695. ; 41:3, s. 583-588
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Journal article (peer-reviewed)abstract
- Dislocation after total hip arthroplasty (THA) is a common reason for revision. The last decade fostered a significant increase in the use of dual-mobility cups (DMCs). Here we report our study on the short-term survival rate of a cemented DMC reported to the Swedish Hip Arthroplasty Register (SHAR) compared with other cemented designs used in first-time revision due to dislocation.During 2005-2015, 984 first-time revisions for dislocation were reported to SHAR. In 436 of these cases a cemented dual articular cup was used. During the same time period, 355 revisions performed with a standard cemented cup (femoral head size 28-36mm) were reported to the SHAR. Patients receiving a DMC were slightly older (75years, p=0.005). Re-revision for all reasons was used as primary endpoint. We also anlaysed risk for re-revision of the acetabular component and re-revision due to dislocation. Kaplan-Meier implant survival and a Cox regression analyses adjusted for age and gender were performed.Implant survival at 4years for all reasons (91%±3.7% vs 86%±4.1%, p=0.02), and especially for re-operation because of dislocation, favours the DMC group (96%±3.0% vs 92%±3.3%, p=0.001).Our findings indicate that use of a cemented DMC reduces the short- to mid-term risk of a second revision in first-time revisions compared with classic cup designs. Longer follow-up is needed to establish any long-term clinical advantages when DMCs are used in revisions performed due to dislocation.
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| 36. |
- Mukka, Sebastian, et al.
(author)
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Dislocation of bipolar hip hemiarthroplasty through a postero-lateral approach for femoral neck fractures : A cohort study
- 2015
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 39:7, s. 1277-1282
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Journal article (peer-reviewed)abstract
- Purpose To analyze postoperative global femoral offset (FO), leg length discrepancy (LLD) and Wiberg angle as risk factors for prosthetic dislocation after treatment with bipolar hemiarthoplasty (HA) through a postero-lateral approach for femoral neck fracture (FNF). Methods Three hundred and seventy three patients treated with a cemented bipolar HA through a postero-lateral approach between January 2006 and December 2013 were included in a cohort study with a follow-up time ranging from 6 months to 7 years. Radiographs and all surgical records were reviewed regarding Global FO, LLD and Wiberg angle. We compared stable hips without dislocation to those with either a single dislocation and those with recurrent instability. Results Three hundred and twenty eight hips fulfilled the inclusion criteria and were analyzed in the study. The incidence of prosthetic dislocation was 10.7 % (36/373). The mean time from surgery to first dislocation was 3.9 months (0-47) and 62.5 % had recurrent dislocations. Patients with dislocation had a statistically significantly decreased postoperative global FO (-6.4 mm vs. -2.8 mm, p = 0.04), LLD (-2 vs. 1.5 mm, p = 0.03) and smaller Wiberg angle (40A degrees vs. 46A degrees, p = 0.01) on the operated side compared with the rest of cohort. In comparison to age and sex-matched control groups from the cohort, the difference in the radiographic parameters were significant in patients with recurrent dislocations but not in patients with a single dislocation. Conclusion Patients with recurrent dislocations had a decreased postoperative global FO, shorter leg and shallower acetabulum on the operated side compared with their controls. These factors might decrease the soft-tissue tension around the operated hip and predispose to dislocation.
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| 38. |
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| 39. |
- Olsson, O, et al.
(author)
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A biomechanical study on fixation stability with twin hook or lag screw in artificial cancellous bone
- 2002
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 1432-5195 .- 0341-2695. ; 26:6, s. 349-355
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Journal article (peer-reviewed)abstract
- The twin hook has been developed as an alternative to the conventional lag screw to be combined with a barrelled side-plate in the treatment of trochanteric hip fractures. With two oppositely directed apical hooks introduced into the subchondral bone of the femoral head, the twin hook provides different stabilising properties to the lag screw. The femoral head purchase of the twin hook and the lag screw were compared in a biomechanical study using artificial cancellous bone, and responses to axial and torsional loading was determined. A distinct yield point in load and torque was noted for the lag screw, representing failure of the laminas supporting the threads. For the twin hook, gradual increase of load and torque occurred during impaction of the bone supporting the hooks. The peak loads and torques were higher for the lag screw, but were similar for both devices after 8 rum deformation. The stiffness was higher for the lag screw, but in counter-clockwise rotation the stiffness for the lag screw was negligible. The twin hook appeared to provide fixation stability comparable to that offered by the lag screw, but with conceivable advantages in terms of a deformation response involving bone impaction and gradually increasing stability.
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| 40. |
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| 41. |
- Robinson, Yohan, 1977, et al.
(author)
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Reconstruction of large defects in vertebral osteomyelitis with expandable titanium cages.
- 2009
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In: International orthopaedics. - : Springer Science and Business Media LLC. - 1432-5195 .- 0341-2695. ; 33:3, s. 745-9
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Journal article (peer-reviewed)abstract
- The purpose of this study was to investigate the outcome of expandable titanium cage implantation in large defects caused by acute vertebral osteomyelitis. Twenty-five patients with acute single or multilevel spondylodiscitis were treated after radical débridement and posterior instrumentation with an anterior expandable titanium cage and bone grafting. Clinical, laboratory and radiological follow-up continued for 36 months. Within the postoperative course there was no recurrence of spinal infection. The final radiological examination showed successful fusion in all cases without implant loosening or failure. At the final follow-up after 36 months the Oswestry Disability Index was 23 +/- 14 and the pain visual analogue scale 2.1 +/- 1.7. This study reveals healing and improved function after expandable titanium cage implantation in all patients. Prerequisites for optimal healing include radical débridement, provision of stability for weight-bearing, adequate bone grafting and correction of deformity using rigid implants.
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| 42. |
- Rutherford, Michael, et al.
(author)
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Randomised clinical trial assessing migration of uncemented primary total hip replacement stems, with and without autologous impaction bone grafting
- 2019
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In: International Orthopaedics. - : Springer. - 0341-2695 .- 1432-5195. ; 43:12, s. 2715-2723
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Journal article (peer-reviewed)abstract
- Purpose: Uncemented stems in primary total hip replacement (THR) are concerning in the elderly due to ectatic femoral canals and cortical thinning resulting in higher incidence of fracture and subsidence in this population. To obviate this concern, the authors developed a technique using autologous impaction bone grafting to achieve a better fitting femoral stem. The aim of this randomised clinical trial was to assess the efficacy of the technique.Methods: From 2013 to 2015, a total of 98 consecutive participants (100 primary THR procedures) were inducted into a single-institution, single-blinded, randomised clinical trial assessing, with radiostereometric analysis (RSA), the efficacy of autologous impaction bone grafting in uncemented primary THR compared with traditional uncemented primary THR technique. The primary outcome measure was femoral component migration using RSA. Secondary outcomes were post-operative proximal femoral bone density (using DEXA), hip function and quality of life using Oxford Hip Score (OHS) and Short Form-12 Health Survey (SF-12), hip pain and patient satisfaction.Results: There was no difference in femoral component stability (p > 0.5) or calcar resorption between the Graft and No Graft Groups at two years. There was also no difference in OHS, SF-12, pain or satisfaction between the Graft and No Graft Groups at two years (p > 0.39).Conclusions: Autologous impaction bone grafting in uncemented primary THR has shown its short-term post-operative outcomes to be equivalent to standard uncemented technique, whilst offering a better fit in patients who are between femoral stem sizes.
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| 43. |
- Saari, Tuuli, 1965, et al.
(author)
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Total knee replacement influences both knee and hip joint kinematics during stair climbing
- 2004
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In: Int Orthop. - : Springer Science and Business Media LLC. - 0341-2695. ; 28:2, s. 82-6
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Journal article (peer-reviewed)abstract
- A gait analysis system was used to evaluate the kinematics of the hip and knee during stair ascending and descending after operation with total knee replacement.Patients with 5 degrees varus/valgus alignment or less were selected randomly to receive either a flat or a concave tibial component with retention of the posterior cruciate ligament. Patients who had more than 5 degrees varus/valgus alignment and/or an extension defect of 10 degrees or more were selected randomly to receive the concave or posterior-stabilized tibial component with resection of the posterior cruciate ligament. Twenty patients and 17 controls were studied 1-2 years after the operation. Patients had abnormal kinematics during stair ascending and descend-ing. Both knee extension and flexion were reduced. Hip extension tended to decrease, and decreased hip extension moment was noted.
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| 44. |
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| 45. |
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| 46. |
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| 47. |
- Sayed-Noor, Arkan S., et al.
(author)
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Leg length discrepancy in total hip arthroplasty : comparison of two methods of measurement
- 2009
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In: International Orthopaedics. - New York, USA : Springer. - 0341-2695 .- 1432-5195. ; 33:5, s. 1189-1193
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Journal article (peer-reviewed)abstract
- Measurement of leg length discrepancy is an important part in planning a successful total hip arthroplasty (THA). Many clinical and radiological methods with variable degrees of accuracy have been advocated to carry out this measurement. We studied the accuracy of a commonly used clinical method by comparing it to a well-known and reliable radiological method. A total of 139 patients aged 44-89 (mean: 67.5 years) scheduled to undergo THA were examined for clinical and radiological leg length discrepancy measurements before and after the operation by the same observers. There was a poor correlation between the clinical and radiological methods preoperatively [r = 0.21, intra-class correlation coefficient (ICC) = 0.33]. The correlation was better postoperatively (r = 0.45, ICC = 0.62). The clinical method used is not recommended for leg length discrepancy measurement preoperatively. Caution should even be taken when using this method postoperatively. The authors recommend using the radiological method when measuring leg length discrepancy as a part of planning for THA.
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| 48. |
- Stucinskas, Justinas, et al.
(author)
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Comparison of dual mobility cup and other surgical construts used for three hundred and sixty two first time hip revisions due to recurrent dislocations : five year results from Lithuanian arthroplasty register
- 2018
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 0341-2695 .- 1432-5195. ; 42:5, s. 1015-1020
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Journal article (peer-reviewed)abstract
- Purpose: Recently, there has been increasing interest in the use of dual mobility systems in the treatment of hip instability. The aim of this study was to investigate the re-revision rate of dual mobility cup compared to different surgical concepts when used for first-time hip revisions due to recurrent dislocations. Methods: The data were derived from the Lithuanian Arthroplasty Register. For survival analysis, we used both re-revision for all reasons and for dislocations as an end-point. Cox proportional hazards models were used to analyze the influence of various covariates (age, gender, and implant concept). Results: A total of 1388 revisions were recorded from 2011 to 2015, of which 362 were performed due to recurrent dislocation. Of the revisions, 247 were performed using dual mobility cups, while 115 were performed using a variety of other surgical constructs including constrained acetabular cups, conventional cups, femoral head exchanges, stem exchanges or anti-luxation rings. There were 27 re-revisions of which 15 were for additional dislocations. There were only 2% re-revisions due to dislocation with dual mobility vs 9% when using other surgical constructs. Cox regression adjusting for age and gender showed that in the short-term, dual mobility cup had a lower risk of revision due to dislocation as well as for all reasons compared to the other surgical constructs. Conclusion: In revision of total hip arthroplasties for dislocation, significantly lower short-term re-revision rate was observed for patients revised with dual mobility cup.
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| 49. |
- Stucinskas, Justinas, et al.
(author)
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Conventional drainage versus four hour clamping drainage after total knee arthroplasty in severe osteoarthritis: a prospective, randomised trial
- 2009
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 1432-5195 .- 0341-2695. ; 33:5, s. 1275-1278
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Journal article (peer-reviewed)abstract
- Total knee replacement in severe osteoarthritis usually requires extensive soft tissue releases often associated with considerable bleeding. In a prospective, randomised trial we compared postoperative conventional suction drainage versus four hour clamping drainage in 60 patients undergoing total knee arthroplasty for severe osteoarthritis. We compared blood loss, number of transfusions, postoperative complications and knee function and found significantly less postoperative blood loss through the drains (p < 0.001), and fewer blood transfusions (p=0.09) were needed in the clamped group. We conclude that clamping drainage after total knee arthroplasty in severe osteoarthritis reduces blood loss through the drains and the need for blood transfusions.
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| 50. |
- Tarasevicius, Sarunas, et al.
(author)
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Dynamics of hip joint effusion after posterior soft tissue repair in total hip arthroplasty
- 2006
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In: International Orthopaedics. - : Springer Science and Business Media LLC. - 1432-5195 .- 0341-2695. ; 30:4, s. 233-236
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Journal article (peer-reviewed)abstract
- Dislocation after total hip replacement is more common in the early, postoperative period. Postoperative intraarticular haematoma and remaining seroma fluid and/or weakened posterior soft tissue wall may be contributing factors. Our purpose was to compare and follow with sonography the resorption of the postoperative volume of intraarticular fluid/synovial oedema after total hip arthroplasty (THA) with or without posterior soft tissue repair. Thirty-three consecutive patients with hip osteoarthritis were admitted for THA. All of them received the same type of cemented implant. Patients were randomised for posterior soft tissue repair or not. Sonography, measuring the anterior capsular distension, indicating the volume of intraarticular fluid/synovial oedema in the prosthetic hip joints, was performed after six and 12 months in all patients. At six months postoperatively greater capsular distension, i.e., remaining volume of intraarticular fluid/synovial oedema, was observed in the group with posterior soft tissue repair than in the group without. After one year the capsular distension had decreased in both groups and there was no significant difference between the groups. Our results show that posterior soft tissue repair after THA is associated with increased capsular distension during the first six months. After 12 months the volume of intraarticular fluid/synovial oedema is the same with or without posterior soft tissue repair.
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