| 1. |
- Gerdhem, Paul, et al.
(författare)
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Rates of fracture in participants and non-participants in the Osteoporosis Prospective Risk Assessment Study
- 2007
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Ingår i: Journal of Bone and Joint Surgery: British Volume. - 2044-5377. ; 89B89:12, s. 1627-1631
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Tidskriftsartikel (refereegranskat)abstract
- We invited 1604 randomly selected women, all 75 years of age, to participate in a study on the risk factors for fracture. The women were divided into three groups consisting of 1044 (65%) who attended the complete study, 308 (19%) respondents to the study questionnaire only and 252 (16%) who did not respond. The occurrence of the life-time fracture was ascertained from radiological records in all groups and by questionnaires from the attendees and respondents. According to the radiological records, fewer of the questionnaire respondents (88 of 308, 28.6%) and non-respondents (68 of 252, 27%) had sustained at least one fracture when compared with the attendees (435 of 1044, 41.7%; chi-squared test, p < 0.001). According to the questionnaire, fewer of the respondents (96 of 308, 31.1%) had sustained at least one previous fracture when compared with the attendees (457 of 1044, 43.7%; chi-squared test, p < 0.001). Any study concerning the risk of fracture may attract those with experience of a fracture which explains the higher previous life-time incidence among the attendees. This factor may cause bias in epidemiological studies.
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| 2. |
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| 3. |
- Kesteris, Uldis, et al.
(författare)
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Rinsing morcellised bone grafts with bisphosphonate solution prevents their resorption. A prospective randomised double-blinded study
- 2006
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Ingår i: Journal of Bone and Joint Surgery. - 0301-620X .- 2044-5377. ; 88:8, s. 993-996
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Tidskriftsartikel (refereegranskat)abstract
- During revision total hip replacement using morcellised compacted bone allograft, 16 patients were randomised to receive a graft which had been rinsed in either an ibandronate solution or in saline. Patients were assessed by dual energy x-ray absorptiometry after operation and at 3, 6, 12 and 24 months. A region of interest between the tip of the femoral stem and the distal plastic plug was chosen to measure the changes in bone density over time. The study was double-blinded. In all the control patients the bone density decreased during the first three months and then remained constant at this lower level. A large proportion of the mass of the bone graft was lost. In contrast, all patients with grafts treated with bisphosphonate showed a slight increase in bone density. The difference between the groups was highly significant at all points in time. We conclude that rinsing the graft in a bisphosphonate solution prevents its resorption and may therefore reduce the risk of mechanical failure. The treatment is simple, inexpensive, and appears virtually free of risk. ©2006 British Editorial Society of Bone and Joint Surgery.
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| 4. |
- Leonardsson, Olof, et al.
(författare)
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Outcome after primary and secondary replacement for subcapital fracture of the hip in 10 264 patients.
- 2009
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Ingår i: The Journal of bone and joint surgery. British volume. - 0301-620X .- 2044-5377. ; 91:5, s. 595-600
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Tidskriftsartikel (refereegranskat)abstract
- Between 1999 and 2005, 10 264 patients who had undergone total hip replacement (THR) for subcapital fracture of the hip were compared with 76 520 in whom THR had been performed for other reasons. All the cases were identified through the Swedish Hip Arthroplasty Register. The THRs performed as primary treatment for fracture were also compared with those done after failure of internal fixation. After seven years the rate of revision was higher in THR after fracture (4.4% vs 2.9%). Dislocation and periprosthetic fracture were the most common causes of revision. The risk was higher in men than in women. The type of femoral component and the surgical approach influenced the risk. After correction for gender, type of component and the surgical approach the revision rates were similar in the primary and secondary fracture THR groups. Total hip replacement is therefore a safe method for both the primary and secondary management of fracture of the hip.
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| 5. |
- Skoglund, Björn, 1975-, et al.
(författare)
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Bone-resorptive effects of endotoxin-contaminated high-density polyethylene particles spontaneously eliminated in vivo
- 2002
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Ingår i: Journal of Bone and Joint Surgery. - 0301-620X .- 2044-5377. ; 84:5, s. 767-773
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Tidskriftsartikel (refereegranskat)abstract
- Wear particles commonly used for experiments may carry adherent endotoxin on their surfaces, which may be responsible for the observed effects. In this study, we attached titanium plates to the tibiae of 20 rats. After osseointegration, endotoxin-contaminated or uncontaminated high-density-polyethylene (HDPE) particles were applied. Contaminated specimens showed a dramatic resorption of bone after seven days but new bone filled the site again at 21 days. Uncontaminated specimens showed no resorption. In 18 rats we implanted intramuscularly discs of ultra-high-molecular-weight polyethylene (UHMWPE) with baseline or excess contamination of endotoxin. Excess endotoxin disappeared within 24 hours and the amount of endotoxin remained at baseline level (contamination from production). Uncontaminated titanium discs did not adsorb endotoxin in vivo. The endotoxin was measured by analytical chemistry. Locally-applied endotoxin stimulated bone resorption similarly to that in experiments with wear particles. Endotoxin on the surface of implants and particles appeared to be inactivated in situ. A clean implant surface did not adsorb endotoxin. Our results suggest that endotoxin adhering to orthopaedic implants is not a major cause for concern.
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| 6. |
- Vult von Steyern, Fredrik, et al.
(författare)
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Treatment of local recurrences of giant cell tumour in long bones after curettage and cementing. A Scandinavian Sarcoma Group study.
- 2006
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Ingår i: The Journal of bone and joint surgery. British volume. - 0301-620X .- 2044-5377. ; 88:4, s. 531-5
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Tidskriftsartikel (refereegranskat)abstract
- We retrospectively studied local recurrence of giant cell tumour in long bones following treatment with curettage and cementing in 137 patients. The median follow-up time was 60 months (3 to 166). A total of 19 patients (14%) had at least one local recurrence, the first was diagnosed at a median of 17 months (3 to 29) after treatment of the primary tumour. There were 13 patients with a total of 15 local recurrences who were successfully treated by further curettage and cementing. Two patients with a second local recurrence were consequently treated twice. At the last follow-up, at a median of 53 months (3 to 128) after the most recent operation, all patients were free from disease and had good function. We concluded that local recurrence of giant cell tumour after curettage and cementing in long bones can generally be successfully treated with further curettage and cementing, with only a minor risk of increased morbidity. This suggests that more extensive surgery for the primary tumour in an attempt to obtain wide margins is not the method of choice, since it leaves the patient with higher morbidity with no significant gain with respect to cure of the disease.
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| 7. |
- Yuan, X, et al.
(författare)
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Roentgen single-plane photogrammetric analysis (RSPA.) A new approach to the study of musculoskeletal movement.
- 2002
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Ingår i: Journal of Bone and Joint Surgery: British Volume. - 2044-5377 .- 0301-620X. ; 84:6, s. 908-914
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Tidskriftsartikel (refereegranskat)abstract
- We present a new approach for the accurate reconstruction of three-dimensional skeletal positions using roentgen single-plane photogrammetric analysis (RSPA). This technique uses a minimum of three markers embedded in each segment which allow continuous, real-time, internal skeletal movement to be measured from single-plane images, provided that the precise distance between the markers is known. A simulation study indicated that the error propagation in this approach is influenced by focus position, object position, the number of control points, the accuracy of the previous measurement of the distance between markers and the accuracy of image measurement. For reconstruction of normal movement of the knee with an input measurement error of SD = 0.02 mm, the rotational and translational differences between reconstructed and original movement were less than 0.27 degrees and 0.9 mm, respectively. Our results showed that the accuracy of RSPA is sufficient for the analysis of most movement of joints. This approach can be applied in combination with force measurements for dynamic studies of the musculoskeletal system.
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| 8. |
- Ericson, A, et al.
(författare)
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Variation in the position and orientation of the elbow flexion axis
- 2003
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Ingår i: The Journal of bone and joint surgery. British volume. - : British Editorial Society of Bone & Joint Surgery. - 0301-620X .- 2044-5377. ; 85B85:4, s. 538-544
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Tidskriftsartikel (refereegranskat)abstract
- We analysed the axis of movement in the normal elbow during flexion in vivo using radiostereometric analysis (RSA). The results show an intraindividual variation in the inclination of the axis ranging from 2.1° to 14.3° in the frontal and from 1.6° to 9.8° in the horizontal plane analysed at 30° increments. The inclination of the mean axis of rotation varied within a range of 12.7° in the frontal and 4.6° in the horizontal plane. In both planes, the mean axes were located close to a line joining the centres of the trochlea and capitellum. The intra- and interindividual variations of the axes of flexion of the elbow were greater than previously reported. These factors should be considered in the development of elbow prostheses.
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| 9. |
- Bernhoff, Karin, et al.
(författare)
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Popliteal artery injury in knee arthroplasty : a population based, nationwide study
- 2013
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Ingår i: Journal of Bone and Joint Surgery. - 0301-620X .- 2044-5377. ; 95:12, s. 1645-1649
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Popliteal artery injury (PAI) is a feared but rare complication during knee arthroplasty (KA). The aim was to study PAI during KA: Type of injury, treatment and outcome.Thirty-two cases were identified in the national Swedish vascular registry (Swedvasc) and the Swedish Patient Insurance databases. Prospective data from the registries was supplemented with case-records, including long-term follow-up.Twenty-five injuries (78%) were due to penetrating, seven to blunt trauma. Three different presentations of injury were identified: Bleeding (n=14), ischaemia (n=7) and false aneurysm formation (n=11). Five (16%) cases were during revision KA. Twelve injuries (38%) were detected intraoperatively, eight (25%) within 24 hours (range 3-24) and twelve (38%) >24 hours postoperatively (range 2-90), 28 (88%) were treated with open surgery. Patency at 30 days was 97% (one amputation). Twenty-five (78%) patients had residual symptoms at the end of follow-up (median 546 days, range: 24-1251). Six of the seven patients with complete recovery had an early diagnosis of the PAI during the procedure, and were treated by a vascular surgeon in the same hospital.Outcome after popliteal artery injury during KA is often negatively affected by diagnostic and therapeutic delay. Bleeding and pseudoaneurysm were the most common clinical presentations.
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| 10. |
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