Journal of Experimental Orthopaedics最新文献

{"title":"Obesity has no adverse effect on the survival of unicompartmental knee arthroplasty in a long-term follow-up of 16 years","authors":"David Zhu,&nbsp;Regis Pailhe,&nbsp;Dany Mouarbes,&nbsp;Ali Alayane,&nbsp;Samy Saoudi,&nbsp;Hasnae Ben-Roummane,&nbsp;Emilie Bérard,&nbsp;Etienne Cavaignac","doi":"10.1002/jeo2.70426","DOIUrl":"10.1002/jeo2.70426","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>The role of obesity in unicompartmental knee arthroplasty (UKA) outcomes remains debated. The aim of this study is to clarify the impact of obesity on revision rates and functional outcomes of UKA in a long-term follow-up. The hypothesis was that body mass index and weight do not significantly affect the long-term survival of UKAs.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>A retrospective study was conducted on 143 UKAs performed over a 16-year period. Patients were stratified by BMI (&lt;30 vs. ≥30 kg/m²) and weight (&lt;82 vs. ≥82 kg). Kaplan–Meier survivorship analysis assessed the 16-year survival rates across subgroups.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The 16-year survival rates were comparable in the BMI subgroups (≥30 kg/m²: 78% (95% confidence interval [CI]: 60–88); &lt;30 kg/m²: 84% [95% CI: 75–90]; <i>p</i> = 0.093) but demonstrated a significant difference in the weight subgroups (&lt;82 kg: 85% [95% CI: 76–90]; ≥82 kg: 76% [95% CI: 59–87]; <i>p</i> = 0.045). Multivariate analysis, adjusted for confounders, showed no statistically significant impact of BMI (<i>p</i> = 0.202) or weight (<i>p</i> = 0.280) on the risk of revision. Functional outcomes, measured by knee society and self knee value scores, were unaffected by BMI at the final follow-up.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This study confirms that BMI and weight do not significantly influence the long-term survival or functional outcomes of UKA, supporting its use in obese patients when appropriately indicated.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Level of Evidence</h3>\u0000 \u0000 <p>Level IV, retrospective case series.</p>\u0000 </section>\u0000 </div>","PeriodicalId":36909,"journal":{"name":"Journal of Experimental Orthopaedics","volume":"12 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esskajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jeo2.70426","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response to the Letter to the Editor regarding “Reduced periprosthetic fracture rate for a cemented anatomical versus a tapered polished stem in hip arthroplasty: A 6-year follow-up of a prospective observational cohort study”","authors":"Anna Josefsson,&nbsp;Michael Axenhus,&nbsp;Raéd Itayem,&nbsp;Sebastian Mukka,&nbsp;Martin Magnéli","doi":"10.1002/jeo2.70411","DOIUrl":"10.1002/jeo2.70411","url":null,"abstract":"&lt;p&gt;We appreciate the interest shown by Drs. Wahl and Gautier in our recent publication and thank them for their thoughtful comments and critical reading of our work.&lt;/p&gt;&lt;p&gt;We acknowledge the inversion of colours in Figure 1 and appreciate the authors' attention to this detail. We agree that a corrigendum should be issued to clarify that the orange curve corresponds to the &lt;i&gt;polished tapered stem (PTS)&lt;/i&gt; and the blue curve to the &lt;i&gt;anatomical stem (AS)&lt;/i&gt;.&lt;/p&gt;&lt;p&gt;The concern raised about potential confounding due to surgical technique is valid and warrants discussion. However, we respectfully disagree that intraoperative errors or technical shortcomings primarily explain our findings. First, our study was conducted at a single high-volume university-affiliated centre, where both stem types were implanted by experienced orthopaedic surgeons using standardised protocols. Importantly, the transition from PTS to AS was a deliberate department-wide change, accompanied by training to ensure continuity and consistency of technique. Second, while the pattern of early periprosthetic fractures in the PTS group may resemble that seen with uncemented stems, this pattern is consistent with prior literature reporting higher early PFF rates in force-closed polished tapered designs in frail populations. These findings have been replicated in multiple registry studies and observational cohorts, and our study adds mid-term follow-up confirmation to this established trend. Third, the suggestion that aggressive broaching or specific technical challenges contributed to early PFFs is mainly speculative. Both stem designs were implanted in patients with similar baseline characteristics, and the transition was not associated with any significant increase in complications during the learning curve period.&lt;/p&gt;&lt;p&gt;We note the concern about the higher observed PJI rate in the PTS group. While the PJI rate exceeded 1% in both groups, it remained within the expected range for a frail hip fracture population with advanced age and comorbidities. Notably, the AS group had a lower PJI and dislocation rate despite the potential for surgical adaptation during the transition, supporting the robustness of the findings.&lt;/p&gt;&lt;p&gt;We agree that our findings should not be extrapolated to all force-closed stems, nor to other settings without careful consideration. Our conclusions are based on the specific stem models used and the population studied. However, as others have shown, including the registry study cited by Drs. Wahl and Gautier, CPT stems have been associated with a higher fracture risk than their Exeter counterparts, underscoring the importance of implant selection even within design classes.&lt;/p&gt;&lt;p&gt;We welcome this opportunity to further clarify our findings and reiterate that while surgical technique is always important, the evidence in our study supports the conclusion that stem design plays a critical role in the risk of periprosthetic fracture.&lt;/p&gt;&lt;p&gt;Sincerely,&lt;/p&gt;&lt;p&gt;Anna Jo","PeriodicalId":36909,"journal":{"name":"Journal of Experimental Orthopaedics","volume":"12 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esskajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jeo2.70411","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The anteroposterior femoral translation starting angle and the medial pivot pattern are correlated with the range of motion after total knee arthroplasty","authors":"Ryota Takase,&nbsp;Shogo Hashimoto,&nbsp;Takashi Ohsawa,&nbsp;Hibiki Kakiage,&nbsp;Akira Honda,&nbsp;Hirotaka Chikuda","doi":"10.1002/jeo2.70435","DOIUrl":"10.1002/jeo2.70435","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>Postoperative range of motion (ROM) of the knee is an important factor for improving clinical scores and symptoms in total knee arthroplasty (TKA). This study aimed to investigate the relationship between intraoperative factors, including anteroposterior translation of the femur, and extension and flexion gaps, observed during posterior-stabilized TKA (PSTKA) using a navigation system, and preoperative and postoperative parameters.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Twenty-one knees with osteoarthritis that were treated by PSTKA were included. ROM and clinical outcomes, including the Hospital for Special Surgery Knee Score (HSS score), were measured before and one year after surgery, and intraoperative kinematic factors were measured using an image-less navigation system. We further divided the subjects into two groups based on the presence or absence of postoperative flexion contracture (defined as an extension angle ≤ –5°at one year after surgery). The no contracture group comprised 12 knees, and the contracture group comprised 9 knees.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The postoperative extension angle correlated with the starting angle of the anteroposterior translation of the femur (<i>r</i> = –0.60; <i>p</i> &lt; 0.01) and the postoperative HSS score (<i>r</i> = 0.46; <i>p</i> = 0.04). The postoperative flexion angle correlated with the lateral-to-medial anteroposterior translation ratio (<i>r</i> = 0.47; <i>p</i> = 0.03), indicating a medial pivot pattern. In comparison to the contracture group, the no contracture group had a significantly smaller starting angle of the anteroposterior translation of the femur in comparison to the contracture group (no contracture, 30.6° ± 17.0°; contracture, 48.4° ± 16.7°; <i>p</i> = 0.02) and a significantly higher postoperative HSS score (no contracture, 90.8 ± 7.0; contracture, 81.1 ± 11.8; <i>p</i> &lt; 0.05).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This study revealed that knee joints with flexion contracture after PSTKA had a significantly larger starting angle of anteroposterior translation during surgery and that an intraoperative medial pivot pattern was beneficial for postoperative flexion angles.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Level of Evidence</h3>\u0000 \u0000 <p>Level III.</p>\u0000 </section>\u0000 </div>","PeriodicalId":36909,"journal":{"name":"Journal of Experimental Orthopaedics","volume":"12 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esskajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jeo2.70435","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predictors of post-operative decline in knee flexion after cruciate-retaining total knee arthroplasty","authors":"Tatsuya Kubo,&nbsp;Tsuneari Takahashi,&nbsp;Katsushi Takeshita","doi":"10.1002/jeo2.70419","DOIUrl":"10.1002/jeo2.70419","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>This study aimed to identify risk factors associated with deterioration in knee flexion range of motion (ROM) following cruciate-retaining total knee arthroplasty (CR-TKA).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>A total of 129 consecutive patients who underwent CR-TKA and completed a 2-year follow-up were included. A decrease of ≥9° in flexion ROM was considered clinically significant. Patients were classified into two groups based on the change in flexion ROM at 2 years post-operatively: Group D (≥9° decrease; <i>n</i> = 44) and Group C (&lt;9° decrease; <i>n</i> = 85). Demographic data were compared using Student's <i>t</i> test or Fisher's exact test. Logistic regression analysis was performed to identify factors associated with ROM deterioration. Receiver operating characteristic (ROC) curve analysis was conducted to determine cut-off values for the identified factors.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Demographic characteristics were comparable between the two groups. Preoperative flexion ROM was significantly higher in Group D than in Group C (128.6 ± 9.5° vs. 115.5 ± 12.3°, <i>p</i> &lt; 0.001). Logistic regression analysis revealed that greater preoperative flexion ROM (odds ratio [OR], 1.18; 95% confidence interval [CI], 1.10–1.27; <i>p</i> &lt; 0.001), a larger distal medial femoral resection (DMFR) (OR, 1.98; 95% CI, 1.14–3.43; <i>p</i> = 0.015) and lower anterior-posterior translation at 30° of flexion 1 year post-operatively (1y30AP) (OR, 0.73; 95% CI, 0.57–0.93; <i>p</i> = 0.012) were independently associated with a ≥9° reduction in flexion ROM. ROC analysis identified cut-off values of &gt;130.0° for preoperative flexion ROM (AUC: 0.80, 95% CI: 0.72–0.88), &gt;7.5 mm for DMFR (AUC: 0.60, 95% CI: 0.50–0.71) and &lt;5.1 mm for 1y30AP (AUC: 0.62, 95% CI: 0.51–0.72).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Preoperative flexion ROM, DMFR and 1y30AP were associated with worse flexion ROM at 2 years following CR-TKA.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Level of Evidence</h3>\u0000 \u0000 <p>Level III, retrospective comparative study.</p>\u0000 </section>\u0000 </div>","PeriodicalId":36909,"journal":{"name":"Journal of Experimental Orthopaedics","volume":"12 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esskajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jeo2.70419","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An evaluation of a low-cost platelet-rich plasma for osteoarthritis of the knee: A pilot study","authors":"Daniel M. Cushman,&nbsp;Luke A. Johnson,&nbsp;Taylor Burnham,&nbsp;Richard Nelson,&nbsp;Jamie Egbert,&nbsp;Robert Burnham","doi":"10.1002/jeo2.70420","DOIUrl":"10.1002/jeo2.70420","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>To assess the characteristics and effectiveness of low-cost platelet-rich plasma (LC-PRP) for knee osteoarthritis (OA) by evaluating its composition and effect on pain, function, satisfaction, safety and cost-effectiveness.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Level IV evidence single-arm prospective cohort pilot study of 20 subjects (30 knees total) with mild-to-moderate knee OA. Two LC-PRP injections were performed, 3 weeks apart. Platelet extraction/yield, patient-reported outcomes and incidence of adverse events were assessed with a primary endpoint of 6 months. A cost-effectiveness analysis of LC-PRP compared to corticosteroid injection was conducted.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>On average, this LC-PRP preparation method allowed for recovery of 85% of platelets. Significant mean differences in Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scores (total, pain and function) and global assessment score were observed at all follow-up points compared to baseline (<i>p</i> &lt; 0.05 for 1, 3, 6 and 12 months). Satisfaction was noted in 90% of patients at 6 months and 75% of patients at 12 months. No significant adverse events were reported. LC-PRP was less costly ($654 vs. $1308) and yielded more QALYs (0.846 vs. 0.708) than corticosteroid injections. Per injection costs were estimated to be $10 for corticosteroid and $11 for LC-PRP.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This pilot study demonstrates that LC-PRP ($11) may significantly benefit patients with knee OA. LC-PRP appears to be a safe, cost-effective means for improving pain and function in knee OA.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Level of Evidence</h3>\u0000 \u0000 <p>Level IV.</p>\u0000 </section>\u0000 </div>","PeriodicalId":36909,"journal":{"name":"Journal of Experimental Orthopaedics","volume":"12 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esskajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jeo2.70420","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of the sulcus angle in patellar dislocation: The importance of measuring four magnetic resonance imaging axial levels and utilising corresponding cutoff values","authors":"Jason D. Brenner,&nbsp;Steven M. Henick,&nbsp;Leila Mehraban Alvandi,&nbsp;Edina Gjonbalaj,&nbsp;Yungtai Lo,&nbsp;Jacob Schulz,&nbsp;Eric D. Fornari,&nbsp;Benjamin J. Levy,&nbsp;Mauricio Drummond Junior","doi":"10.1002/jeo2.70425","DOIUrl":"10.1002/jeo2.70425","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>The primary purpose was to assess sulcus angle (SA) magnetic resonance imaging (MRI) measurements and determine diagnostic cutoff values along four axial levels on cartilaginous and osseous surfaces comparing those with patellar dislocations (PD) versus controls. A secondary aim was to identify differences in SA between patients with one-time dislocation (OTD) versus recurrent patellar dislocations (RPDs).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Paediatric patients with a history of PD were retrospectively grouped into those with an OTD versus RPDs. Age and sex frequency matching controls (ACL injuries without PD history) were identified. The SA was recorded at four levels in the trochlear groove (TG) on cartilaginous and osseous surfaces. Differences between sample means (PDs vs. controls; RPDs vs. OTDs) were assessed; cutoff values for discriminating PDs from controls were identified utilising Youden′s index.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>There were 173 PDs (106 RPDs, 67 OTDs) and 100 controls. There were differences in mean SA between PD and controls throughout the trochlear groove for both cartilaginous (PD vs. control: SA1 166.1° vs. 152.5°, SA2 161.0° vs. 148.5°, SA3 155.7° vs. 145.9°, SA4 150.7° vs. 142.5°) and osseous surfaces (PD vs. control: SA1 160.2° vs. 146.6, SA2 153.8° vs. 140.2°, SA3 147.2° vs. 134.8°, SA4 142.1° vs. 132.6°) (<i>p</i> &lt; 0.001). Diagnostic cutoffs were higher for cartilaginous versus osseous measurements (SA1 159.6° vs. 153.1°, SA2 153.8° vs. 148.0°, SA3 152.5° vs. 141.6°, SA4 148.1° vs. 137.4°). RPD patients had greater cartilaginous SA than OTDs throughout the TG (SA1<i>p</i> = 0.014, SA2<i>p</i> = 0.004, SA3<i>p</i> = 0.027, SA4<i>p</i> = 0.007), while osseous SA measurements did not differ (SA1<i>p</i> = 0.057, SA2<i>p</i> = 0.070, SA3<i>p</i> = 0.185, SA4<i>p</i> = 0.175).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>SA was greater in PDs than controls at all four levels in the TG for both cartilaginous and osseous measurements. Cartilaginous SA was greater among RPDs than OTDs at all levels; however, osseous SA was not different between cohorts. The diagnostic cutoff of dysplastic SA differed by axial level and surface.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Level of Evidence</h3>\u0000 \u0000 <p>Level III.</p>\u0000 </section>\u0000 </div>","PeriodicalId":36909,"journal":{"name":"Journal of Experimental Orthopaedics","volume":"12 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esskajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jeo2.70425","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The posterior femoral cartilage can be used as an anatomical reference for the creation of the femoral tunnel in anterior cruciate ligament reconstruction","authors":"Viktor Nelson Mazzola Corrêa,&nbsp;Nayra Deise dos Anjos Rabelo,&nbsp;Alfredo dos Santos Netto,&nbsp;Victor Marques de Oliveira,&nbsp;Luiz Gabriel Betni Guglielmetti,&nbsp;Ricardo de Paula Leite Cury","doi":"10.1002/jeo2.70403","DOIUrl":"10.1002/jeo2.70403","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>The objective of the study was to evaluate the accuracy of femoral tunnel positioning in the reconstruction of the anteromedial (AM) bundle of the Anterior Cruciate Ligament (ACL) using the most proximal and posterior portion of the lateral femoral condyle cartilage (Point C).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>From December 2022 to December 2023, 47 patients underwent anterior cruciate ligament reconstruction (ACLR) in outside in manner using Point C as an anatomical landmark for AM bundle ACLR. After the procedure, the patients underwent tomographic evaluation to assess the accuracy of the positioning, using Bernard's quadrants. Two evaluators at three different times measured the percentages for each case.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The average distance from Point C to the anterior portion of the lateral femoral condyle was 23.3 mm, and the average correlation value of Point C with the centre of the AM bundle in the horizontal coordinate intraoperatively was 7.7 mm. The average depth values (X coordinate) for evaluator 1 at Time 1 were 23.6%, and at Time 2 were 23.6%. The average height values (Y coordinate) at Time 1 were 22.7%, and at Time 2 were 22.1%. The analysis by the second evaluator at the third time point had an average X coordinate of 23.6% and Y coordinate of 22.3%.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Point C proved to be a reliable anatomical landmark, exhibiting good accuracy in mimicking the AM bundle in the femoral tunnel during ACLR.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Level of Evidence</h3>\u0000 \u0000 <p>Level IV.</p>\u0000 </section>\u0000 </div>","PeriodicalId":36909,"journal":{"name":"Journal of Experimental Orthopaedics","volume":"12 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esskajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jeo2.70403","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Beneficial effect of medial opening wedge high tibial osteotomy on mental health of patients with knee osteoarthritis","authors":"Ashton Kai Shun Tan,&nbsp;Xinyu Tao,&nbsp;Shao Jin Teo,&nbsp;Don Thong Siang Koh,&nbsp;Junwei Soong,&nbsp;Hamid Rahmatullah Bin Abd Razak,&nbsp;Kong Hwee Lee","doi":"10.1002/jeo2.70400","DOIUrl":"10.1002/jeo2.70400","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>Knee osteoarthritis (OA) is the most common degenerative joint disease in the world. It results in not only physical limitation and pain, but also negatively impacts quality of life and mental wellbeing. Treatment options such as medial opening wedge high tibial osteotomy (MOWHTO) help to relieve pain and improve functionality, but there is limited literature on the effect on mental health. This study aims to investigate the effect of MOWHTO on the mental health of patients with knee OA.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>In this retrospective cohort study, data were collected from patients who underwent MOWHTO between 2019 and 2023 in a single tertiary institution. The main outcome score, short form-36 mental component score (SF-36 MCS), was recorded at baseline, 6 months and 2 years postprocedure. Secondary outcomes included the SF-36 physical component score (PCS) and Oxford knee score (OKS).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>There were a total of 108 MOWHTOs, comprising 51 men and 57 women. At surgery, the mean age was 55.4 ± 6.97. Twelve patients did not turn up at the 6-month follow-up. There was a significant improvement of SF-36 MCS from a preoperative mean of 50.8 ± 12.6 to 57.1 ± 11.0 (<i>p</i> &lt; 0.05) and 56.8 + 9.07 (<i>p</i> &lt; 0.05) at 6 months and 2 years postoperation, respectively. There was also a significant increase in the scores of SF-36 PCS and OKS (<i>p</i> &lt; 0.05 for both) at 6-month and 2-year follow-up. Higher preoperative SF-36 MCS was significantly correlated with improved postoperation SF-36 PCS (<i>ρ</i> = 0.184, <i>p</i> = 0.05) and OKS (<i>ρ</i> = −0.218, <i>p</i> = 0.02 &lt; 0.05).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>At 2-year follow-up, MOWHTO results in a significant improvement in the mental health of patients with knee OA. There is a correlation between preoperative mental health and postoperative outcomes, suggesting a role of mental health in affecting MOWHTO outcomes.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Level of Evidence</h3>\u0000 \u0000 <p>Level IV.</p>\u0000 </section>\u0000 </div>","PeriodicalId":36909,"journal":{"name":"Journal of Experimental Orthopaedics","volume":"12 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esskajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jeo2.70400","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Four-bundle anatomic deltoid ligament reconstruction: Surgical technique","authors":"Bruno Olory,&nbsp;Piero Agostinone,&nbsp;Ashraf T. Hantouly,&nbsp;Francesca Zannoni,&nbsp;Khalid Al-Khelaifi,&nbsp;Emmanouil Papakostas,&nbsp;Alan Getgood,&nbsp;Pieter D'Hooghe","doi":"10.1002/jeo2.70279","DOIUrl":"10.1002/jeo2.70279","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 <p>The deltoid ligament, the strongest medial ankle ligament, is often overlooked in ankle injuries, despite its substantial role in ankle stability. Medial sprains, accounting for 3%–4% of ankle injuries, are frequently misdiagnosed, leading to chronic pain, instability, and hindfoot valgus deformity. While most cases respond to conservative treatment, chronic injuries that fail conservative measures require surgical intervention. This technical paper introduces a novel four-bundle deltoid ligament reconstruction technique, restoring two anterior (superficial and deep) and two posterior (superficial and deep) bundles. This approach provides a solution for severe injuries and high-demand patients, permitting functional stability.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Level of Evidence</h3>\u0000 \u0000 <p>Level V.</p>\u0000 </section>\u0000 </div>","PeriodicalId":36909,"journal":{"name":"Journal of Experimental Orthopaedics","volume":"12 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esskajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jeo2.70279","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Patients with borderline hip dysplasia present with inferior patient-reported outcomes compared to true hip dysplasia","authors":"Quentin Karisch,&nbsp;Marco Haertlé,&nbsp;Justus Stamp,&nbsp;Nikolai Ramadanov,&nbsp;Henning Windhagen,&nbsp;Sufian S. Ahmad","doi":"10.1002/jeo2.70407","DOIUrl":"10.1002/jeo2.70407","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>The factors influencing patient-reported outcome measures (PROMs) in individuals with developmental dysplasia of the hip (DDH) remain poorly understood. The aim of this study was to determine the differences in hip-related PROMs in both borderline and true hip dysplasia.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>A total of 245 patients with symptomatic DDH were enrolled. Hips were divided into either borderline dysplasia (lateral centre-edge angle [LCEA] 20°–25°) or true dysplasia (LCEA &lt; 20°). PROMs were retrieved from all patients. Linear regression analysis was performed to identify potential factors associated with PROMs. The relationship between PROMs and the characteristic of dysplasia and between patients with DDH and healthy people was assessed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Patients with borderline hip dysplasia had significantly poorer scores compared to true dysplasia on the University of California and Los Angeles activity scale (UCLA), the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), the Merle d'Aubigné and postel score and the German forgotten joint score (G-FJS). In patients with DDH, all PROMs were significantly lower compared to the control group. In patients with true dysplasia, body mass index (BMI) emerged as the most influential factor affecting the hip disability and osteoarthritis outcome score–physical function shortform (HOOS-PS), WOMAC, International Hip Outcome Tool 12 (iHOT-12) and Harris hip score (HHS). In contrast, in patients with borderline dysplasia, radiographic parameters such as anterior wall coverage significantly influenced the WOMAC, iHOT-12, HHS, modified HHS and G-FJS, while the LCEA was associated with UCLA and HOOS-PS scores. Age was identified as a significant predictor in borderline dysplasia.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Patients with borderline dysplasia report poorer PROMs compared to true dysplasia, suggesting a distinct clinical and diagnostic burden in this group of patients. Moreover, the increased mechanical load associated with higher BMI appears to play a greater role only in patients with true dysplasia.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Level of Evidence</h3>\u0000 \u0000 <p>Level III.</p>\u0000 </section>\u0000 </div>","PeriodicalId":36909,"journal":{"name":"Journal of Experimental Orthopaedics","volume":"12 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esskajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jeo2.70407","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}