Bone & Joint Journal最新文献

{"title":"Follow-up after successful treatment for developmental dysplasia of the hip using a Pavlik harness : is two years enough?","authors":"Jessica P J Larwood, Opeyemi Idowu, Kirsten G B Elliott, Edward A Lindisfarne, Alexander Aarvold","doi":"10.1302/0301-620X.107B4.BJJ-2023-1213.R2","DOIUrl":"10.1302/0301-620X.107B4.BJJ-2023-1213.R2","url":null,"abstract":"<p><strong>Aims: </strong>The length of time for which children, who are treated successfully for developmental dysplasia of the hip (DDH) in a Pavlik harness should be followed up, remains uncertain. The aim of this study was to examine whether children who are treated in this way, who have normal clinical and radiological findings at the age of two years, can be safely discharged from routine follow-up.</p><p><strong>Methods: </strong>Data were collected prospectively on all 101 children (170 hips) who were treated in a Pavlik harness in our children's hospital between January 2015 and June 2016, with follow-up to the age of five years. Demographic, clinical, and radiological parameters were recorded. Routine anteroposterior radiographs of both hips were taken at the age of one, two and five years. A normal radiograph of the hip was defined as one with an acetabular index (AI) within the normal range when adjusted for age, symmetrical and adequately sized ossific nuclei, an International Hip Dysplasia Institute grade of 1 and a centre-edge angle (CEA) of > 20°.</p><p><strong>Results: </strong>Of the 101 children (170 hips) who were successfully treated in this way and had radiographs available for analysis from the three timepoints, 157 hips (92%) were normal radiologically at the age of two years and all were normal radiologically at the age of five years. Every child who had normal radiographs at the age of two years had normal clinical and radiological findings at five years, with none having any intervention.</p><p><strong>Conclusion: </strong>These findings support the suggestion that, following successful treatment with a Pavlik harness, children with DDH can be safely discharged from the clinic, assuming that they are clinically and radiologically normal, at the age of two years instead of five.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"107-B 4","pages":"495-500"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143755041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A case series of modular hip hemiarthroplasties employing a metal-on-metal taper-trunnion junction : are they a source of metal particle release?","authors":"Neil Chotai, Rajiv Kaila, Hannah Wilson, Rajib Pradhan, Vipin Asopa, George Grammatopoulos, A J Andrade","doi":"10.1302/0301-620X.107B4.BJJ-2024-0576.R1","DOIUrl":"10.1302/0301-620X.107B4.BJJ-2024-0576.R1","url":null,"abstract":"<p><strong>Aims: </strong>Hip hemiarthroplasty is a common procedure in the treatment of intracapsular displaced femoral neck fractures. Modular hemiarthroplasties have a separate stem, neck, and head component which gives the surgeon more combinations to try and accurately recreate the patient's original hip geometry. Despite regular use, little is known regarding susceptibility to metal-on-metal debris wear in this specific situation.</p><p><strong>Methods: </strong>This single-centre, two-year prospective cohort study aimed to characterize in vivo wear and associated adverse reaction to metal debris (ARMD) in an uncemented CORAIL stem and Cathcart modular head hip hemiarthroplasty. The mean patient age was 80.5 years (62 to 96) and mean follow-up 2.2 years (1.0 to 4.6). Overall, 54 patients had a clinical, radiological, and serum metal ion (chromium (Cr) and cobalt (Co)) assessment. At follow-up radiological evidence of acetabular erosion was graded (0 to 3: normal to protrusio). Metal ion levels were considered high if ≥ 7 ppb as per current Medicines and Healthcare products Regulatory Agency guidelines.</p><p><strong>Results: </strong>Final Cr and Co levels in ppb were 0.26 (IQR 1.33; 95% CI 0.67 to 5.16) and 0.68 (IQR 2.52; 95% CI 1.25 to 3.30), respectively. The mean one-year Oxford Hip Score was 35 (SD 10). Acetabular erosion was detected in 27 patients (50%). All eight patients (14.8%) with high metal ion levels had associated acetabular erosion, of which four (50%) had an ARMD lesion. Patients with high metal ion levels had a similar head size with the same taper size, similar OHS, and similar pre-fracture mobility to those with low metal ion levels.</p><p><strong>Conclusion: </strong>Modular hip hemiarthroplasty patients may be susceptible to metallosis and ARMD despite being less active individuals than those who receive a total hip arthroplasty. Acetabular erosion was associated with a 2.5-times increased risk of raised metal ion levels but cause and effect have not been established.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"107-B 4","pages":"479-485"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143755377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Periprosthetic joint infection : navigating the literature.","authors":"Ian W Kennedy, Fares S Haddad","doi":"10.1302/0301-620X.107B4.BJJ-2024-1080","DOIUrl":"10.1302/0301-620X.107B4.BJJ-2024-1080","url":null,"abstract":"","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"107-B 4","pages":"374-377"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143755383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Open reduction and fixation does not improve short-term outcome of medium-sized posterior fragments in AO type B ankle fractures: one-year results of the POSTFIX randomized controlled trial.","authors":"Adriaan L Franx, Samuel M Verhage, Pieta Krijnen, Eric L L Twiss, Inger B Schipper, Jochem M Hoogendoorn","doi":"10.1302/0301-620X.107B4.BJJ-2024-0521.R3","DOIUrl":"10.1302/0301-620X.107B4.BJJ-2024-0521.R3","url":null,"abstract":"<p><strong>Aims: </strong>Guidelines for treatment of posterior malleolar fragments (PMFs) in trimalleolar fractures are scarce, mainly based on retrospective studies, and show varying advice. The need for fixation of smaller (< 25%) PMFs remains particularly controversial. This study aims to evaluate the superiority of fixation of medium-sized PMFs versus no fixation of the fragment.</p><p><strong>Methods: </strong>A multicentre randomized controlled trial was conducted between January 2014 and January 2022 in two Dutch level 1 trauma centres (protocol registration: NCT02596529). Patients presenting with an AO-44-B3 fracture with a medium-sized (5% to 25%) PMF were 1:1 randomized online between open reduction and internal fixation (ORIF) (FIX) versus no fixation (NO-FIX) of the fragment. A total of 41 patients were allocated online to FIX via the posterolateral approach and 40 patients to NO-FIX. The primary outcome was functionality measured by the American Academy of Orthopaedic Surgeons (AAOS) questionnaire one year postoperatively. Secondary outcomes were osteoarthritis (OA) measured on radiographs and the Olerud and Molander ankle score, visual analogue scale pain, and EuroQol five-dimension questionnaire during follow-up. Quality of reduction was assessed by step-off on postoperative CT scan and radiograph. Complications were recorded.</p><p><strong>Results: </strong>After one-year follow-up, no difference (p = 0.141) in AAOS was found after FIX (median 90 (IQR 68 to 95)) and NO-FIX (median 93 (IQR 85 to 97)). OA (≥ grade 2) was present in four (17%) of the cases after FIX and five (20%) after NO-FIX (p = 0.763). After one year, median pain scores were 20 (IQR 5 to 40) versus 10 (IQR 5 to 25) (p = 0.032), and perceived general median health scores were 80 (IQR 60 to 89) versus 83 (IQR 71 to 90) (p = 0.596) after FIX and NO-FIX, respectively. Postoperative step-off > 1 mm on CT scan was present in 56% after FIX versus 71% after NO-FIX (p = 0.193). Complication rates were 18% versus 5% (p = 0.071) after FIX and NO-FIX, respectively.</p><p><strong>Conclusion: </strong>ORIF of medium-sized posterior fragments in AO type B trimalleolar fractures does not prompt superior functional or radiological results after one-year follow-up. Longer follow-up is needed to evaluate intermediate or long-term effects.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"107-B 4","pages":"461-469"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143755381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"What do orthopaedic surgeons need to know about frailty?","authors":"Antony Johansen, Arwel Poacher","doi":"10.1302/0301-620X.107B4.BJJ-2024-1333.R2","DOIUrl":"10.1302/0301-620X.107B4.BJJ-2024-1333.R2","url":null,"abstract":"","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"107-B 4","pages":"378-379"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143755427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum.","authors":"Adam M Galloway, Nicolas Nicolaou, Daniel C Perry","doi":"10.1302/0301-620X.107B4.BJJ-2025-00055","DOIUrl":"10.1302/0301-620X.107B4.BJJ-2025-00055","url":null,"abstract":"","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"107-B 4","pages":"501"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143754931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contemporary results of total femoral arthroplasties for non-oncological conditions.","authors":"Aaron R Owen, Jacob W Bettencourt, Cody C Wyles, Nicholas A Bedard, Charles P Hannon, Daniel J Berry, Matthew P Abdel","doi":"10.1302/0301-620X.107B4.BJJ-2024-0959.R1","DOIUrl":"10.1302/0301-620X.107B4.BJJ-2024-0959.R1","url":null,"abstract":"<p><strong>Aims: </strong>Contemporary outcomes of total femoral arthroplasties (TFAs) in the non-oncological setting are limited. This study aimed to assess implant survival free from revision and reoperation, clinical outcomes, and radiological results associated with TFAs for non-oncological conditions.</p><p><strong>Methods: </strong>We identified 24 patients who received TFAs between 1 January 2007 and 31 December 2021 through our institutional total joint registry. The patients' mean age was 66 years (48 to 83), mean BMI was 33 kg/m² (21 to 54), and median follow-up was four years (IQR 2 to 5). Bearings used included eight flat-faced polyethylene bearings, seven dual-mobility constructs, six constrained liners, and three face-changing liners. Of the 24 patients, 17 had a previously documented periprosthetic joint infection (PJI) and 12 were treated with chronic antibiotic suppression following their TFAs.</p><p><strong>Results: </strong>The two-, five-, and ten-year survivals free of any revision were 66%, 51%, and 34%, respectively. There were 12 revisions: five for hip dislocation, four for PJI, one for aseptic tibial loosening, one for prosthetic knee dislocation, and one for acetabular loosening with pelvic discontinuity. The two-, five-, and ten-year survivals free of any reoperation were 53%, 47%, and 34%, respectively. In addition to the stated TFA revisions, one patient required open reduction of a hip dislocation, and two patients required superficial irrigation and debridement procedures for wound complications. Mean Harris Hip Scores improved from a mean score of 48 to 69 (p = 0.002), and Knee Society Scores improved from a mean score of 56 to 71 (p = 0.110). At final follow-up, 20 patients had TFAs in situ, but four patients had been treated with hip disarticulation due to recalcitrant infection. All but one tibial and all non-revised acetabular components were radiologically well-fixed at final follow-up.</p><p><strong>Conclusion: </strong>The use of TFAs in the non-oncological setting, mostly for salvage of multiply revised hips with previous PJI, had a low five-year survival free from any revision of 51%, mostly for hip dislocation and infection. Nevertheless, clinical outcomes improved in this challenging cohort of patients.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"107-B 4","pages":"449-454"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143755378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distinct age-related modes of failure in cemented and cementless Oxford medial unicompartmental knee arthroplasty : results from 25,762 patients in the Dutch Arthroplasty Register.","authors":"Gaby V Ten Noever de Brauw, Roderick J M Vossen, Tarik Bayoumi, Inger N Sierevelt, Joost A Burger, Andrew D Pearle, Gino M M J Kerkhoffs, Anneke Spekenbrink-Spooren, Hendrik A Zuiderbaan","doi":"10.1302/0301-620X.107B3.BJJ-2024-0512.R2","DOIUrl":"10.1302/0301-620X.107B3.BJJ-2024-0512.R2","url":null,"abstract":"<p><strong>Aims: </strong>The primary objective of this study was to compare short-term implant survival between cemented and cementless fixation for the mobile-bearing Oxford medial unicompartmental knee arthroplasty (UKA) across various age groups. The secondary objectives were to compare modes of failure and to evaluate patient-reported outcomes.</p><p><strong>Methods: </strong>A total of 25,762 patients, comprising 8,022 cemented (31.1%) and 17,740 cementless (68.9%) medial UKA cases, were included from the Dutch Arthroplasty Register. Patient stratification was performed based on age: < 50 years, 50 to 59 years, 60 to 69 years, and ≥ 70 years. Survival rates and hazard ratios were calculated. Modes of failure were described and postoperative change in baseline for the Oxford Knee Score and numerical rating scale for pain at six and 12 months' follow-up were compared.</p><p><strong>Results: </strong>The 2.5-year implant survival rate of cementless UKA was significantly higher compared to cemented UKA in patients aged younger than 60 years (age < 50 years: 95.9% (95% CI 93.8 to 97.3) vs 90.9% (95% CI 87.0 to 93.7); p = 0.007; and 50 to 59 years: 95.6% (95% CI 94.9 to 96.3) vs 94.0% (95% CI 92.8 to 95.0); p = 0.009). Cemented UKA exhibited significantly higher revision rates for tibial loosening (age < 50 and 60 to 69 years), while cementless UKA was associated with higher revision rates for periprosthetic fractures (age ≥ 60 years). Patient-reported outcomes were similar between both fixation techniques, irrespective of age.</p><p><strong>Conclusion: </strong>Cementless fixation resulted in superior short-term implant survival compared to cemented fixation among younger patients undergoing Oxford mobile-bearing medial UKA. Distinct failure patterns between fixation techniques emerged across various age groups, with revisions for tibial loosening being associated with cemented UKA in younger patients, while revisions for periprosthetic fractures were specifically identified among elderly patients undergoing cementless UKA.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"107-B 3","pages":"329-336"},"PeriodicalIF":4.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Patient-reported outcome measures offer little additional value two years after arthroplasty : a systematic review and meta-analysis.","authors":"Hannah Spece, Michael A Kurtz, Nicolas S Piuzzi, Steven M Kurtz","doi":"10.1302/0301-620X.107B3.BJJ-2024-0910.R1","DOIUrl":"10.1302/0301-620X.107B3.BJJ-2024-0910.R1","url":null,"abstract":"<p><strong>Aims: </strong>The use of patient-reported outcome measures (PROMs) to assess the outcome after total knee (TKA) and total hip arthroplasty (THA) is increasing, with associated regulatory mandates. However, the robustness and clinical relevance of long-term data are often questionable. It is important to determine whether using long-term PROMs data justify the resources, costs, and difficulties associated with their collection. The aim of this study was to assess studies involving TKA and THA to determine which PROMs are most commonly reported, how complete PROMs data are at ≥ five years postoperatively, and the extent to which the scores change between early and long-term follow-up.</p><p><strong>Methods: </strong>We conducted a systematic review of the literature. Randomized controlled trials (RCTs) with sufficient reporting of PROMs were included. The mean difference in scores from the preoperative condition to early follow-up times (between one and two years), and from early to final follow-up, were calculated. The mean rates of change in the scores were calculated from representative studies. Meta-analyses were also performed on the most frequently reported PROMs.</p><p><strong>Results: </strong>A total of 24 studies were assessed. The most frequently reported PROMs were the Oxford Knee Score (OKS) for TKA and the University of California, Los Angeles activity scale for THA. The mean rate of follow-up based on the number of patients available at final follow-up was 70.5% (39.2% to 91.0%) for knees and 82.1% (63.2% to 92.3%) for hips. The actual rates of collection of PROM scores were lower. For TKA, the mean OKS, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and transformed WOMAC changes were -16.3 (95% CI -17.5 to -15.2), 23.2 (95% CI 17.2 to 29.2), and -29.7 (95% CI -32.4 to -27.0) points for short-term follow-up. These decreased to 1.3 (95% CI -0.8 to 3.3), -3.4 (95% CI -7.0 to 0.3), and 4.7 (95% CI -1.5 to 10.9) points for the remaining follow-up. A similar meta-analysis was not possible for studies involving THA. We commonly observed that the scores plateaued after between one and two years, and that there was little or no change beyond this time.</p><p><strong>Conclusion: </strong>The long-term PROMs for TKA and THA beyond one or two years are often incomplete and lose sensitivity at this time. Given the considerable resources, costs, and challenges associated with the collection of these scores, their clinical value is questionable. Therefore, consideration should be given to abandoning the requirement for the collection of long-term PROMs in favour of more robust and reliable measures of success that offer more clinical relevance and use.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"107-B 3","pages":"296-307"},"PeriodicalIF":4.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143537947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of national real-world data on reoperations after medial unicompartmental knee arthroplasty : insights from a high-usage country.","authors":"Christian Bredgaard Jensen, Martin Lindberg-Larsen, Andreas Kappel, Cecilie Henkel, Troels Mark-Christensen, Kirill Gromov, Anders Troelsen","doi":"10.1302/0301-620X.107B3.BJJ-2024-0290.R1","DOIUrl":"10.1302/0301-620X.107B3.BJJ-2024-0290.R1","url":null,"abstract":"<p><strong>Aims: </strong>The aim of this study was to examine the indications for further surgery and the characteristics of the patients within one year of medial unicompartmental knee arthroplasty (mUKA), providing an assessment of everyday clinical practice and outcomes in a high-volume country.</p><p><strong>Methods: </strong>All mUKAs which were performed between 1 April 2020 and 31 March 2021 and underwent further surgery within one year, from the Danish Knee Arthroplasty Registry (DKAR), were included. For primary procedures and reoperations, we received data on the characteristics of the patients, the indications for surgery, the type of procedure, and the sizes of the components individually, from each Danish private and public arthroplasty centre. All subsequent reoperations were recorded regardless of the time since the initial procedure.</p><p><strong>Results: </strong>A total of 2,431 primary mUKAs in 2,303 patients were reported to the DKAR during the study period and 55 patients (55 mUKAs; 2.3%; (95% CI 1.7 to 3.0)) underwent further surgery within one year. The most frequent indications for reoperation were periprosthetic fracture (n = 16; 0.7% (95% CI 0.4 to 1.1)), periprosthetic joint infection (PJI) (n = 13; 0.5% (95% CI 0.3 to 0.9)), and bearing dislocation (n = 9; 0.4% (95% CI 0.2 to 0.7)). Six periprosthetic fractures were treated with internal fixation, but five of these patients later underwent revision to a total knee arthroplasty (TKA). Ten PJIs were treated with debridement, antibiotics, and implant retention (DAIR). Due to persistent infection, four of these patients later underwent revision to a TKA. All nine bearing dislocations were treated with exchange of the liner, and seven occurred in patients who, based on their sex and height, probably had undersized femoral components.</p><p><strong>Conclusion: </strong>Reoperations are rare following mUKA in a high-volume country. The most frequent indications for further surgery were periprosthetic fracture, PJI, and bearing dislocation. Using internal fixation to treat periprosthetic fractures after mUKA gives poor results. Whether DAIR is an appropriate form of treatment for PJI in mUKAs, and how to ensure the effective eradication of infection in these patients, remains uncertain. Undersizing the femoral component might increase the risk of bearing dislocation.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"107-B 3","pages":"314-321"},"PeriodicalIF":4.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}