| 1. |
- Sandberg, Olof H., et al.
(författare)
-
Computed tomography-based radiostereometric analysis in orthopedic research: practical guidelines
- 2023
-
Ingår i: ACTA ORTHOPAEDICA. - : Medical Journals Sweden. - 1745-3674 .- 1745-3682. ; 94, s. 373-378
-
Tidskriftsartikel (refereegranskat)abstract
- - Early implant migration is an indicator of the long-term survival/failure of implants. CT-based radio-stereometric analysis (CT-RSA) is a precise method for mea-suring and visualizing implant migration in vivo using image processing of CT scans. This makes the method widely applicable to orthopedic researcher. Since its development in the early 2000s, CT-RSA has benefited from breakthroughs in CT and computing technol-ogy. These advancements have allowed for the acquisition of images with higher resolution at a much lower radiation dose. As a result, the measurement precision of CT-RSA is now comparable to that of the current gold standard technol-ogy while still compatible with most ethical considerations regarding radiation exposure. In this review we present bests practices for the successful execution of CT-RSA research projects. These practices are based on experience from projects on the hip, knee, shoulder, lower back, cervical spine, foot, pelvis, and wrist.
|
|
| 2. |
- Wolf, Olof, et al.
(författare)
-
Study protocol: The DUALITY trial-a register-based, randomized controlled trial to investigate dual mobility cups in hip fracture patients
- 2020
-
Ingår i: Acta Orthopaedica. - : TAYLOR & FRANCIS LTD. - 1745-3674 .- 1745-3682. ; 91:5, s. 506-513
-
Tidskriftsartikel (refereegranskat)abstract
- Background and purpose - Physically and mentally fit patients with a displaced femoral neck fracture (FNF) are mostly treated with total hip arthroplasty (THA). Dislocation is a severe and frequent complication in this group, and dual mobility cups (DMC) were developed to reduce the risk of dislocation after THA. The DUALITY trial investigates whether the use of DMC in FNF patients treated with a THA reduces the risk of dislocation. Patients and methods - The trial is a national, multicenter, register-based, randomized controlled trial (rRCT). Patients >= 65 years with a non-pathological, displaced FNF (Type Garden 3-4/AO 31-B2 or B3) who are suitable for a THA according to local guidelines are assessed for eligibility using the web-based registration platform of the Swedish Fracture Register (SFR). 1,600 patients will be randomized 1:1 to either insertion of a DMC (intervention group) or a standard cup (control group). The study is pragmatic in that the choice of implant brands, surgical approach, and peri- and postoperative protocols follow the local routines of each participating unit. All outcome variables will be retrieved after linkage of the study cohort obtained from the SFR with the Swedish Hip Arthroplasty Register and the National Patient Register. Outcomes - The primary outcome is the occurrence of any dislocation of the index joint treated with closed or open reduction within 1 year after surgery, expressed as a relative risk when comparing groups, and a risk reduction of at least 45% is considered clinically relevant. Secondary outcomes are the relative risk of any reoperation of the index joint, periprosthetic joint infection, and mortality within 90 days and 1 year. Patient-reported outcomes and health economics are evaluated. Start of trial and estimated duration - The DUALITY trial started recruiting patients in January 2020 and will continue for approximately 5 years. Trial registration - The trial is registered at clinicaltrials.gov (NCT03909815; December 12, 2019).
|
|
| 3. |
- Bergkvist, Magnus, et al.
(författare)
-
Debridement, antibiotics and implant retention in early periprosthetic joint infection
- 2016
-
Ingår i: HIP International. - : SAGE Publications. - 1120-7000 .- 1724-6067. ; 26:2, s. 138-143
-
Tidskriftsartikel (refereegranskat)abstract
- Introduction: Periprosthetic joint infection (PJI) is a devastating complication in hip arthroplasty surgery. Debridement, antibiotics (AB) and implant retention (DAIR) is recommended in early PJI in association with stable implants. The aim of this study was to evaluate the success rate of DAIR in early PJI (<4 weeks) and to identify factors predicting the outcome. Methods: This cohort study included a consecutive series of 35 patients (median age 74 years, 25 women, 26 primary arthroplasties) treated with DAIR for an early PJI in a regional hospital. Results: 28 patients (80%) had their infection eradicated. DAIR-only eradicated the PJI in 22 (63%) patients with a median follow-up of 50 (24-84) months. In 17 (49%) patients, oral AB had been given prior to intraoperative cultures, which delayed first debridement with average 6 days and delayed hospital stay. Primary surgery for a hip fracture increased the risk of DAIR-failure. Surgical experience did not affect the outcome. 17% (n = 6) of the patients sustained a secondary infection during their hospital stay; the majority was beta-lactam resistant coagulase negative Staphylococcus aureus. Conclusions: The success rate of DAIR was inferior to pervious controls from experienced revision centers. Hip fracture patients should be informed about the increased risk of DAIR treatment failure. In order not to delay surgery, empirically based oral AB should not be administered prior to deep cultures.
|
|
| 4. |
- Broden, Cyrus, et al.
(författare)
-
CT-based micromotion analysis method can assess early implant migration and development of radiolucent lines in cemented glenoid components : a clinical feasibility study
- 2022
-
Ingår i: Acta Orthopaedica. - : Medical Journal Sweden AB. - 1745-3674 .- 1745-3682. ; 93, s. 277-283
-
Tidskriftsartikel (refereegranskat)abstract
- Background and purpose - CT micromotion analysis (CTMA) has been considered as an alternative to radiostereometry (RSA) for assessing early implant migration of orthopedic implants. We investigated the feasibility of CTMA to assess early migration and the progression of radiolucent lines in shoulder arthroplasties over 24 months using sequential low-dose CT scans. Patients and methods - 7 patients were included and underwent 9 primary total shoulder arthroplasties. We made CT scans preoperatively, within 1 week postoperatively, and after 3, 6, 12, and 24 months. At each follow-up, postoperative glenoid migration and any development of radiolucent lines were assessed. Clinical outcomes were recorded at all time points except within 1 week postoperatively. Results - For the glenoid component, the median translation and median rotation were 0.00-0.10 mm and -1.53 degrees to 1.05 degrees at 24 months. Radiolucent lines could be observed around all glenoid components. The radiolucent lines developed from the periphery to the center of the implant for 6 glenoid components during follow-up. The Constant Score improved from a mean of 30 (21-51) preoperatively to 69 (41-88) at 24 months. Interpretation - CTMA can be used to identify early migration and the development of radiolucent lines over time in glenoid components. Clinical trials with a larger sample size and longer follow-up are needed to establish the relationship between migration, radiolucent lines, loosening, and clinical outcome.
|
|
| 5. |
- Krupic, Ferid, et al.
(författare)
-
Migrant general practitioners' experiences of using interpreters in health-care : a qualitative explorative study
- 2017
-
Ingår i: Medicinski arhiv. - : ScopeMed. - 0350-199X .- 1986-5961. ; 71:1, s. 42-47
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: According to the UNHCR, 250 million people currently live outside their country of birth. The growing multicultural population poses a major challenge to healthcare professionals who aim to provide individualized, holistic care, which respects the individual's autonomy. To ensure basic rights, healthcare interventions should be guided by the value of benefiting others; individuals should be treated honestly, equally, and impartially.OBJECTIVE: To investigate immigrant doctors' experiences of using interpreters in the Swedish health-care system.MATERIAL AND METHODS: Twenty-eight doctors, 12 men and 16 women from Bosnia and Herzegovina, Croatia, Macedonia and Serbia participated in four focus group interviews (FGI). The interviews were audio recorded, transcribed and analyzed using content analysis method.RESULTS: The best results in the present study were achieved in situations where a professional interpreter was involved. In some cases, the doctors were forced to use relatives or a colleague to interpret, which in many cases proved to be a mistake. The consequences of poor interpretation routines included payment by mistake, a patient paying an interpreter who refused to interpret, time spent waiting for another interpreter, as well as disturbances to the daily work schedule. Finding someone who could replace an interpreter who did not show up caused time shortage and increased stress.CONCLUSIONS: Improved routines and more effective cooperation between interpreting services and health-care centers are needed in order to ensure that using professional interpreters guarantees appropriate, high quality care. Improvements are needed to provide satisfactory health-care to people with limited language skills. In order to achieve this, better education of interpreters is needed, especially regarding cultural diversity and medical terminology. These improvements present complex challenges, deserving empirical and critical reflection in order to improve the work situation for doctors.
|
|
| 6. |
- Laszlo, Sofia, et al.
(författare)
-
Proximal Hamstring Tendon Avulsions : A Survey of Orthopaedic Surgeons' Current Practices in the Nordic Countries
- 2022
-
Ingår i: SPORTS MEDICINE-OPEN. - : Springer. - 2199-1170 .- 2198-9761. ; 8:1
-
Tidskriftsartikel (refereegranskat)abstract
- Background and purpose Evidence guiding the decision on whether to treat proximal hamstring tendon avulsions (PHA) operatively or non-operatively is very limited. The aim of this study was to identify the current practices and the rationale behind PHA treatment decisions in the Nordic countries. Methods A survey was sent to orthopaedic surgeons in Sweden, Norway, Finland and Denmark. The study population consisted of responding surgeons with exposure to surgical treatment of PHA (n = 125). The questions covered surgeon and unit characteristics, and surgeons' understanding of the evidence for treatment, and they explored which patient and injury factors influence treatment allocation. Results Although some surgeons indicated a preference for one of the treatments, 84% stated that the treatment decision was based on patient and injury-related factors. Severe obesity, drug abuse, a sedentary lifestyle, age > 60 years and delayed diagnosis (> 6 weeks) were considered contraindications to surgical treatment. Also, there was agreement that patients expressing a preference for non-operative treatment should not be operated. Complete avulsions with tendon dislocation >= 2-3 cm on MRI were relative indications for surgical treatment. The majority of surgeons did not believe that operatively treated patients did better than non-operatively treated patients and experienced that patients, generally, were satisfied with the treatment result, regardless of the type of treatment. Most surgeons had experienced significant complications to operative treatment. Conclusion Current practices varied among different units, and despite the lack of evidence for their prognostic value, several factors were inconsistently being used as decision modifiers when selecting patients for surgical treatment.
|
|
| 7. |
- Mukka, Sebastian, et al.
(författare)
-
Study protocol: The DAICY trial-dual versus single-antibiotic impregnated cement in primary hemiarthro-plasty for femoral neck fracture-a register-based cluster-randomized crossover-controlled trial
- 2022
-
Ingår i: Acta Orthopaedica. - : Medical Journals Sweden AB. - 1745-3674 .- 1745-3682. ; 93, s. 794-800
-
Tidskriftsartikel (refereegranskat)abstract
- Background and purpose - Older patients with a dis-placed femoral neck fracture (FNF) are often treated with a cemented primary hemiarthroplasty (HA). The DAICY trial investigates whether high-dose dual-impregnated antibiotic -loaded cement (DIAC) including gentamicin and clindamy-cin can reduce the risk of periprosthetic joint infection (PJI) in comparison with low-dose single-impregnated gentami-cin antibiotic-loaded cement (SIAC), in patients & GE; 60 years treated with a cemented HA for a displaced FNF. Study design - The trial is a national, multicenter, reg-ister-based, cluster-randomized, crossover trial. Patients & GE; 60 years with a non-pathological, displaced FNF (Type Garden 3-4/AO 31-B2 or B3) suitable for HA according to local guidelines are eligible for inclusion. Participating orthopedic departments will be randomized to start with either SIAC (control group) or DIAC treatment (intervention group) for 2 years. After 2 years, the study departments will then change to the other treatment arm for the remaining 2 years of the study. Approximately 7,000 patients will be included. The study is pragmatic in that the choice of implant brands, sur-gical approach and peri-and postoperative protocols follow the local routines of each participating department. All out-come variables will be retrieved after linkage of the studycohort to the following Swedish registers: the Fracture Reg-ister, the Arthroplasty Register, the National Patient Register and the Prescribed Drug Registry Outcome - The primary outcome will be periprosthetic joint infection of the index joint within 1 year after surgery. Secondary outcomes will be any reoperation on the index joint, mortality within 90 days and 1 year, resistance patterns of causative bacteria in cases of PJI, and health economics. Potential added value - This trial is designed to sup-port or refute the efficacy of DIAC used in patients with a dis-placed FNF, potentially reducing PJI and resource allocation. Start of the trial and estimated duration - The DAICY trial started recruiting patients in January 2022 and will continue recruiting for approximately 4 years. Complete follow-up expected in 5 years.
|
|
| 8. |
- Mukka, Sebastian, et al.
(författare)
-
Substantially higher prevalence of postoperative periprosthetic fractures in octogenarians with hip fractures operated with a cemented, polished tapered stem rather than an anatomic stem A prospective cohort study involving 979 hips
- 2016
-
Ingår i: Acta Orthopaedica. - : Informa UK Limited. - 1745-3674 .- 1745-3682. ; 87:3, s. 257-261
-
Tidskriftsartikel (refereegranskat)abstract
- Background and purpose - Recent studies have demonstrated a high incidence of postoperative periprosthetic femoral fracture (PPF) in elderly patients treated with 2 commonly used cemented, polished tapered stems. We compared the prevalence and incidence rate of PPF in a consecutive cohort of octagenerians with femoral neck fractures (FNFs) treated with either a collarless, polished tapered (CPT) stem or an anatomic matte stem (Lubinus SP2). Patients and methods - In a multicenter, prospective cohort study, we included 979 hips in patients aged 80 years and above (72% females, median age 86 (80-102) years) with a femoral neck fracture as indication for surgery. 69% of the patients were classified as ASA class 3 or 4. Hip-related complications and repeat surgery were assessed at a median follow-up of 20 (0-24) months postoperatively. Results - 22 hips (2.2%) sustained a PPF at a median of 7 (0-22) months postoperatively; 14 (64%) were Vancouver B2 fractures. 7 of the 22 surgically treated fractures required revision surgery, mainly due to deep infection. The cumulative incidence of PPFs was 3.8% in the CPT group, as compared with 0.2% in the SP2 group (p < 0.001). The risk ratio (RR) was 16 (95% CI: 2-120) using the SP2 group as denominator. Interpretation - The CPT stem was associated with a higher risk of PPF than the SP2 stem. We suggest that the tapered CPT stem should not be used for the treatment of femoral neck fractures in patients over 80 years.
|
|
| 9. |
- Olczak, Jakub, et al.
(författare)
-
Artificial intelligence for analyzing orthopedic trauma radiographs Deep learning algorithms-are they on par with humans for diagnosing fractures?
- 2017
-
Ingår i: Acta Orthopaedica. - : Medical Journals Sweden AB. - 1745-3674 .- 1745-3682. ; 88:6, s. 581-586
-
Tidskriftsartikel (refereegranskat)abstract
- Background and purpose - Recent advances in artificial intelligence (deep learning) have shown remarkable performance in classifying non-medical images, and the technology is believed to be the next technological revolution. So far it has never been applied in an orthopedic setting, and in this study we sought to determine the feasibility of using deep learning for skeletal radiographs. Methods - We extracted 256,000 wrist, hand, and ankle radiographs from Danderyd's Hospital and identified 4 classes: fracture, laterality, body part, and exam view. We then selected 5 openly available deep learning networks that were adapted for these images. The most accurate network was benchmarked against a gold standard for fractures. We furthermore compared the network's performance with 2 senior orthopedic surgeons who reviewed images at the same resolution as the network. Results - All networks exhibited an accuracy of at least 90% when identifying laterality, body part, and exam view. The final accuracy for fractures was estimated at 83% for the best performing network. The network performed similarly to senior orthopedic surgeons when presented with images at the same resolution as the network. The 2 reviewer Cohen's kappa under these conditions was 0.76. Interpretation - This study supports the use for orthopedic radiographs of artificial intelligence, which can perform at a human level. While current implementation lacks important features that surgeons require, e.g. risk of dislocation, classifications, measurements, and combining multiple exam views, these problems have technical solutions that are waiting to be implemented for orthopedics.
|
|
| 10. |
- Pihl, Elsa, et al.
(författare)
-
At mid- to long-term follow-up after proximal hamstring tendon avulsion; there was greater fatty infiltration, muscle atrophy and strength deficit in the hamstring muscles of the injured leg than in the uninjured leg
- 2023
-
Ingår i: Journal of Orthopaedic Surgery and Research. - : BioMed Central (BMC). - 1749-799X. ; 18:1
-
Tidskriftsartikel (refereegranskat)abstract
- BackgroundProximal hamstring tendon avulsions (PHAs) may be treated nonoperatively or operatively. Little is known about the result of the injury, and its treatment, on the quality and function of the hamstring muscle after healing and rehabilitation. We hypothesized that the injured leg would have greater fatty infiltration and atrophy than the uninjured leg at follow-up and that these findings would correlate to muscle weakness.MethodsIn a cross-sectional cohort study, 48 patients treated for PHA, either operatively or nonoperatively, were re-examined 2-11 years post-treatment. We measured muscle strength with isokinetic strength tests, and muscle volume and fatty infiltration with MRI.Primary outcomes were hamstring muscle quality, quantified by outlining the cross-sectional area slice-by-slice, and the degree of fatty infiltration estimated using the Goutallier grading method. Secondary outcome was concentric isokinetic hamstring muscle strength measured using BioDex at 60 degrees/sec and tendon attachment assessed on MRI. Comparisons with the outcomes of the uninjured leg were made.ResultsThe total hamstring muscle volume was on average reduced by 9% (SD +/- 11%, p < 0.001) compared to that of the uninjured leg. Fatty infiltration was significantly more severe in the injured hamstrings than in the uninjured hamstrings (p < 0.001). This was also true when only analyzing operatively treated patients. The reduction in muscle volume and increase in fatty infiltration correlated significantly (r = 0.357, p = 0.013), and there was also a statistically significant correlation with muscle atrophy and reduction in isokinetic strength (r = 494, p < 0.001).ConclusionPHA injuries result in fatty infiltration and muscle atrophy and the muscle quality impairment correlates with residual muscle weakness.
|
|
| 11. |
- Pihl, Elsa, et al.
(författare)
-
Exploring the Perth Hamstring Assessment Tool and Lower Extremity Functional Scale in a Proximal Hamstring Avulsion Cohort : A Cross-sectional Study
- 2021
-
Ingår i: American Journal of Sports Medicine. - : Sage Publications. - 0363-5465 .- 1552-3365. ; 49:7, s. 1732-1740
-
Tidskriftsartikel (refereegranskat)abstract
- Background: The goal of treatment for a proximal hamstring avulsion (PHA) is an objectively restored muscle and a subjectively satisfied, pain-free patient at follow-up. Different self-reported and performance-based outcome measures have been used to evaluate recovery, but their validity is poorly investigated. Purpose: To investigate (1) the correlation between the commonly used self-reported outcome measurements, the Perth Hamstring Assessment Tool (PHAT) and the Lower Extremity Functional Scale (LEFS); (2) to what extent these scores can be explained by physical dysfunction as measured by performance-based tests; (3) whether performance-based tests can discriminate between the injured and uninjured extremity; and (4) which activity limitations are perceived by patients several years after the injury. Study design: Cohort study (Diagnosis); Level of evidence, 3. Methods: We included a consecutive series of patients treated for or diagnosed with PHA in our department between 2007 and 2016 having at least 2 tendons avulsed from the ischial tuberosity. Participants attended 2 study visits, answered questionnaires (PHAT, LEFS, and Patient-Specific Functional Scale [PSFS]), and performed physical performance-based tests (single-leg hop tests, single-step down test, and isometric and isokinetic strength tests). Results: A total of 50 patients were included (26 men [52%], 24 women [48%]; mean age, 50.9 years [SD, 9.8 years]). The mean follow-up time was 5.5 years (SD, 2.7 years), and 74% had been surgically treated. The correlation between PHAT and LEFS was strong (r = 0.832) and statistically significant (P < .001). Seven of the performance-based tests exhibited a statistically significant but weak correlation with LEFS (0.340-0.488) and 3 of the tests to PHAT (-0.304 to 0.406). However, only peak torque could significantly discriminate between the extremities. The activity limitation most commonly mentioned in PSFS was running (16 patients [32%]). Conclusion: Although PHAT and LEFS correlated strongly, the correlations between functional tests and the patient-reported outcome scores were weak, and most functional tests failed to discriminate between the injured and uninjured lower extremity in patients with PHA 5 years after injury. In general, patients alleged few activity limitations, but running difficulty was a common sequela after PHA.
|
|
| 12. |
- Pihl, Elsa, et al.
(författare)
-
The proximal hamstring avulsion clinical trial (PHACT)-a randomised controlled non-inferiority trial of operative versus non-operative treatment of proximal hamstrings avulsions : study protocol
- 2019
-
Ingår i: BMJ Open. - : BMJ Publishing Group Ltd. - 2044-6055. ; 9:9
-
Tidskriftsartikel (refereegranskat)abstract
- Introduction The treatment of proximal hamstring avulsions is controversial. While several trials have investigated the outcome for patients treated surgically, there is today no prospective trial comparing operative treatment with non-operative treatment. This protocol describes the design for the proximal hamstring avulsion clinical trial (PHACT)-the first randomised controlled trial of operative versus non-operative treatment for proximal hamstring avulsions. Methods and analysis PHACT is a multicentre randomised controlled trial conducted across Sweden, Norway and Finland. Eligible patients (60 participants/treatment arm) with a proximal hamstring avulsion of at least two of three tendons will be randomised to either operative or non-operative treatment. Participants allocated to surgery will undergo reinsertion of the tendons with suture anchors. The rehabilitation programme will be the same for both treatment groups. When patient or surgeon equipoise for treatment alternatives cannot be reached and randomisation therefore is not possible, patients will be invited to participate in a parallel observational non-randomised cohort. The primary outcome will be the patient-reported outcome measure Perth hamstring assessment tool at 24 months. Secondary outcomes include the Lower Extremity Functional Score, physical performance and muscle strength tests, patient satisfaction and MR imaging. Data analysis will be blinded and intention-to-treat analysis will be preformed. Ethics and dissemination Ethical approval has been granted by the Ethical Committee of Uppsala University (DNR: 2017-170) and by the Norwegian ethical board (REC: 2017/1911). The study will be conducted in agreement with the Helsinki declaration. The findings will be disseminated in peer-reviewed publications.
|
|
| 13. |
- Sadrizadeh, Sasan, et al.
(författare)
-
A systematic review of operating room ventilation
- 2021
-
Ingår i: Journal of Building Engineering. - : Elsevier BV. - 2352-7102. ; 40, s. 102693-
-
Forskningsöversikt (refereegranskat)abstract
- Ventilation systems are the primary way of eliminating airborne pathogenic particles in an operating room (OR). However, such systems can be complex due to factors such as different surgical instruments, diverse room sizes, various staff counts, types of clothing used, different surgical types and duration, medications, and patient conditions. OR ventilation should provide a thermally comfortable environment for the surgical staff team members while preventing the patient from suffering from any extreme hypothermia. Many technical, logistical, and ethical implications need to be considered in the early stage of designing a ventilation system for an OR. Years of research and a significant number of publications have highlighted the controversy and disagreement among infection specialists, design engineers, and ventilation experts in this context. This review article aims to provide a good understanding of OR ventilation systems in the context of air quality and infection control from existing research and provide multidimensional insights for appropriate design and operation of the OR. To this end, we have conducted a systematic review of the literature, covering 253 articles in this context. Systematic review and meta-analyses were used to map the evidence and identify research gaps in the existing clinical, practical, and engineering knowledge. The present study is categorized into six research focuses: ventilation system, thermal comfort, staff work practice and obstacles, door operation and passage, air cleaning technology, emission rate, and clothing systems. In the conclusion, we summarize the key limitations of the existing studies and insights for future research direction.
|
|
