SICOT-J最新文献

{"title":"Defining the dystrophic femoral neck in osteogenesis imperfecta: a radiographic and anatomical entity with diagnostic threshold.","authors":"Samuel Georges, Jad Zalaket, Alina Badina, Stephanie Pannier, Ibrahim Saliba, Zagorka Pejin","doi":"10.1051/sicotj/2026001","DOIUrl":"10.1051/sicotj/2026001","url":null,"abstract":"<p><strong>Introduction: </strong>Severe Osteogenesis Imperfecta (OI) can cause distinct proximal femoral deformities, but specific femoral neck changes remain poorly defined. This study aimed to characterize dystrophic femoral neck morphology and determine a diagnostic threshold.</p><p><strong>Methods: </strong>We retrospectively reviewed anteroposterior pelvic radiographs from patients >8 years old with severe OI (n = 24 hips) and age-matched controls (n = 24 hips). Measurements included femoral neck length, neck diameter, head diameter, neck-shaft angle, anterior lateral proximal femoral angle (aLPFA), and acetabular protrusion. Ratios of neck length-to-diameter and neck length-to-head diameter were calculated. Statistical comparisons used t-tests; ROC analysis identified the optimal threshold for distinguishing dystrophic necks.</p><p><strong>Results: </strong>OI patients had shorter femoral necks (52.7 ± 9.9 mm vs. 64.8 ± 9.6 mm, p < 0.001), smaller diameters (19.4 ± 4.7 mm vs. 32.8 ± 4.8 mm, p < 0.0001), and higher neck length-to-diameter ratios (2.82 ± 0.63 vs. 1.98 ± 0.19, p < 0.000001). A threshold of ≥2.35 (AUC = 0.90) identified dystrophic necks, associated with greater acetabular protrusion (-2.91 ± 12.33 mm vs. 4.42 ± 8.67 mm, p = 0.004).</p><p><strong>Discussion: </strong>A neck length-to-diameter ratio ≥ 2.35 reliably defines dystrophic femoral necks in OI and correlates with increased acetabular protrusion. Early recognition may guide surgical planning and help preserve hip function.</p><p><strong>Level of evidence: </strong>Level IV - Retrospective comparative study.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"42"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13330499/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148377267","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":"Hybrid minimally invasive correction for flexible flatfeet in young adults: a prospective cohort study.","authors":"Ahmed S Elhalawany, Ahmed Kholeif, Abo Bakr Zein, Mohamed Nagy, Mahmoud M Elsaqa, Mohammed Ali, Ahmed Khedr","doi":"10.1051/sicotj/2025070","DOIUrl":"10.1051/sicotj/2025070","url":null,"abstract":"<p><strong>Introduction: </strong>This study aims to assess the functional and radiological outcomes of combining minimally invasive medial displacing calcaneal osteotomy (MDCO) with subtalar arthroereisis (STA) for the treatment of symptomatic planovalgus feet in young adults.</p><p><strong>Methods: </strong>A single-centre, prospective cohort study was conducted between November 2015 and February 2022. The study included a total of 32 patients with flexible flatfoot who were treated with subtalar arthroereisis combined with medialising calcaneal osteotomy with at least three years of follow-up. Radiographic evaluation included talar coverage angle, AP talo-first metatarsal (T1MT), AP talo-calcaneal, lateral talo-first metatarsal, and calcaneal pitch angles. Function was assessed by the AOFAS score.</p><p><strong>Results: </strong>Angles and scores were compared preoperatively and at the third-year follow-up. The mean talo-navicular coverage angle TNCA reduced from 32.72° (±8.33) preoperatively to 8.84° (±5.70) at the last follow-up. The mean AP T1MT improved from 21.59° (±8.47) preoperatively to 7.78° (±4.03) at three years postoperatively. Meary's angle decreased from 20.84° (±7.14) preoperatively to 4.78° (±3.20) following the correction. The mean preoperative AOFAS score was 62.69 (±9.26), and significantly improved to 94.19 (±3.80) at the last follow-up. Four feet experienced sinus tarsi pain (12.5%), and three patients (9.3%) needed removal of the arthroereisis implant.</p><p><strong>Conclusions: </strong>The combination of MDCO and STA holds significant promise for treating flexible flatfeet in adolescents and young adults, particularly in cases of moderate to severe deformity. This combination demonstrates a synergistic interaction, with the STA implant providing internal bracing to support MDCO and reducing stresses over the medial arch by preventing hyper-pronation. Simultaneously, the MDCO reinforces the reconstruction, achieving the necessary increased correction in moderate to severe flatfoot cases, while also reducing stresses over the STA implant.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"12"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12975123/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147436560","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":"Design of a multitissue osteoarticular 3D-Printed knee model for initial training in meniscal repair.","authors":"Manon Pignero, Javier Arduengo Garcia, Jean Yves Hascoet, Cyrille Decante, Julien Berhouet, Herve Thomazeau, Vincent Biscaccianti, Vincent Crenn","doi":"10.1051/sicotj/2026046","DOIUrl":"10.1051/sicotj/2026046","url":null,"abstract":"<p><strong>Purpose: </strong>Meniscal preservation is essential, given the degenerative risk associated with meniscectomy. Consequently, meniscal repair is a key technical skill to be acquired early during surgical training. However, resident education is limited by restricted access to human models. While artificial simulators represent an alternative, their use is often constrained by high cost and limited biomechanical or arthroscopic realism. The aim of this project was to design and evaluate a 3D-printed arthroscopic simulator dedicated to meniscal repair, developed through a collaboration between orthopedic surgeons and engineers, in order to provide an accessible and realistic educational tool.</p><p><strong>Methods: </strong>Modeling and design were jointly performed by orthopedic surgeons and engineers based on segmentation of medical imaging data. A complete lower limb was created, incorporating a removable capsulomeniscal complex. Osseous and cartilaginous structures were produced by direct 3D printing, while ligaments and the capsulomeniscal complex were molded in silicone using 3D-printed templates. This removable complex differentiates peripheral capsular insertions from meniscal roots, reproducing the anatomical constraints. The model was assessed through a subjective evaluation of arthroscopic realism during meniscal suturing procedures by two independent knee surgery experts.</p><p><strong>Results: </strong>The prototype reproduces a complete lower limb articulated around a fixed femoral pivot, with near-physiological hip and knee motion. It allows dry arthroscopy for various meniscal tear patterns and requires Cabot and valgus maneuvers for optimal femorotibial exposure. Ramp lesions can be repaired via a postero-medial approach using a hook instrument, whereas osseous procedures such as meniscal root reinsertion remain unfeasible. Both evaluators rated as \"very realistic\" the anatomy, haptic feedback, and ramp lesion suturing. Overall, arthroscopic realism was rated as \"very realistic\" by both.</p><p><strong>Conclusion: </strong>This study presents a realistic 3D-printed simulator for meniscal repair, addressing a clear educational need. Further development and large-scale validation studies involving trainees are required to confirm its pedagogical relevance. Study type / Level of evidence: Experimental design study / Level IV.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"54"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13584642/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148991871","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":"Smoking and injury severity score predict major complications after surgical treatment of ipsilateral proximal and shaft femoral fractures.","authors":"Luis Henrique Longo, Weverley Rubele Valenza, Paulo Henrique Vogt, Lucas Romano Sampaio Rezende, Matheus Uriel Senna Klipp, Henrique Rezende Corral, Lucas Cruz Cepeda, Christiano Barbieri de Oliveira Martoni","doi":"10.1051/sicotj/2026072","DOIUrl":"10.1051/sicotj/2026072","url":null,"abstract":"<p><strong>Introduction: </strong>Ipsilateral proximal and shaft femoral fractures are rare, high-energy injuries associated with substantial morbidity. Evidence on predictors of adverse outcomes after surgical treatment remains limited.</p><p><strong>Methods: </strong>We conducted a retrospective cohort study at a tertiary trauma center including all skeletally mature patients who underwent surgical treatment for ipsilateral proximal femoral fractures (femoral neck or trochanteric region) associated with femoral shaft fractures between January 2019 and December 2024. The primary outcome was a composite of major complications, including deep surgical site infection, delayed union, nonunion, symptomatic pulmonary embolism, or all-cause mortality. Bivariable analyses were performed to compare patients with and without major complications, followed by multivariable logistic regression to identify independent predictors.</p><p><strong>Results: </strong>Fifty-two patients were included, with a mean age of 41.8 years and a mean Injury Severity Score (ISS) of 23.1. Major complications occurred in 17 patients (32.7%). The most frequent major complications were all-cause mortality (13.5%) and deep surgical site infection (11.5%). In bivariable analysis, smoking, longer time to definitive treatment, and higher ISS were associated with major complications. In the multivariable model, smoking (adjusted odds ratio [OR] 19.24, 95% confidence interval [CI] 2.78-133.04; p = 0.003) and higher ISS (adjusted OR per point 1.10, 95% CI 1.01-1.19; p = 0.027) remained independently associated with the primary outcome, whereas time to definitive treatment and age did not.</p><p><strong>Conclusion: </strong>Major complications were frequent after surgical treatment of ipsilateral proximal and shaft femoral fractures, affecting nearly one-third of patients. Smoking and greater trauma severity, as measured by ISS, were the main independent predictors of adverse outcomes. These findings highlight the importance of perioperative risk stratification and support smoking as a relevant modifiable risk factor in this setting.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"71"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13670927/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149196927","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":"Comparing outcomes for retrograde intramedullary nailing vs. antegrade intramedullary nailing for Femoral fractures - a systematic review and meta-analysis.","authors":"Kapilraj Ravendran, Mohammed Ibrahim Khalil, Thiviya Manoharan, Achsah Ann Alexander, Nuraan Shahid, Karim Abdelghafour, Pranav Mishra","doi":"10.1051/sicotj/2026030","DOIUrl":"10.1051/sicotj/2026030","url":null,"abstract":"<p><strong>Background: </strong>Distal femur fractures represent a small but clinically significant proportion of femoral injuries and are associated with high rates of complications, including non-union and revision surgery. Intramedullary nailing is a commonly employed fixation strategy, with both antegrade and retrograde approaches widely used in current practice. However, controversy persists regarding the optimal nail entry technique, particularly with respect to fracture healing, revision rates, and complications. This systematic review and meta-analysis aimed to compare clinical and radiological outcomes of antegrade versus retrograde intramedullary nailing for femoral shaft and distal femur fractures.</p><p><strong>Methods: </strong>This review was conducted in accordance with PRISMA guidelines and registered with PROSPERO (CRD420251274011). MEDLINE, EMBASE, and Cochrane databases were systematically searched for comparative studies evaluating antegrade and retrograde intramedullary nailing. Retrospective and prospective human studies reporting outcomes of union, revision, refracture, malunion, delayed union, operative time, and complications were included. Data extraction and quality assessment were independently performed, with risk of bias evaluated using the ROBINS-I tool. Meta-analysis was conducted using odds ratios (ORs) and weighted mean differences with 95% confidence intervals.</p><p><strong>Results: </strong>Five studies encompassing 1,479 patients were included, of whom 894 underwent antegrade nailing, and 585 underwent retrograde nailing. Antegrade nailing demonstrated a significantly lower rate of refracture following primary fixation compared with retrograde nailing (OR 31.41; 95% CI 4.45-221.80; p < 0.001). Revision rates were also significantly lower in the antegrade group (OR 1.76; 95% CI 1.21-2.58; p = 0.003). Retrograde nailing showed a higher overall union rate, although this did not reach statistical significance (p = 0.10). Rates of malunion, delayed union, non-union, operative time, and overall complications were comparable between groups, with moderate to substantial heterogeneity observed for several outcomes.</p><p><strong>Conclusion: </strong>Both antegrade and retrograde intramedullary nailing provide effective fixation for femoral shaft and distal femur fractures. Antegrade nailing is associated with significantly lower rates of refracture and revision, while retrograde nailing demonstrates comparable union outcomes. These findings suggest that antegrade nailing may offer advantages in selected patient populations, particularly elderly individuals, although the surgical approach should ultimately be guided by fracture pattern, patient factors, and surgeon expertise.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"33"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13200819/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148018150","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":"Functional alignment with robotic-assisted total knee arthroplasty is associated with reduced early postoperative pain and alignment outliers compared to mechanical alignment with conventional total knee arthroplasty: a prospective cohort study.","authors":"Wai Kit Wong, Naim Che-Kamaruddin, Patrick Ze En Ng, Shi Yao Chong, Siang Leon Chin, Hwa Sen Chua","doi":"10.1051/sicotj/2026058","DOIUrl":"10.1051/sicotj/2026058","url":null,"abstract":"<p><strong>Introduction: </strong>Robotic-assisted total knee arthroplasty (RATKA) has been introduced to enhance surgical precision, alignment, and soft-tissue balancing, thus enabling the advent of numerous alignment philosophies including functional alignment (FA). This study aimed to compare early clinical outcomes, patient-reported outcome measures (PROMs), and radiographic accuracy brought about by RATKA using FA principles against the current reference standard of conventional total knee arthroplasty (TKA) and mechanical alignment (MA).</p><p><strong>Methods: </strong>This prospective, non-randomized cohort study included 45 patients undergoing primary unilateral TKA (30 RATKA, 15 conventional). Outcomes assessed were Visual Analogue Scale (VAS), Knee Society Score (KSS), and Knee injury and Osteoarthritis Outcome Score (KOOS) preoperatively and up to 1 year postoperatively. Forgotten Joint Score-12 (FJS-12) was evaluated at 1 year. Radiographic parameters included hip-knee-ankle angle (HKA), medial proximal tibial angle (MPTA), lateral distal femoral angle (LDFA), and femoral component rotation. Alignment outliers were defined as a deviation of > ±3° from the target. Statistical significance was set at p < 0.05.</p><p><strong>Results: </strong>RATKA resulted in significantly lower VAS pain scores at 2 weeks and 3 months (p < 0.05), with a consistent trend toward reduced pain at other timepoints. PROMs demonstrated improvements favoring RATKA across several KSS and KOOS subdomains at selected intervals. FJS-12 was higher in the RATKA group but did not reach statistical significance (p = 0.12). Radiographic alignment was comparable between groups except for femoral component rotation, which showed greater external rotation in the conventional cohort (p = 0.009). RATKA significantly reduced alignment outliers (10.0% vs 40.0%, p = 0.042). No complications were observed.</p><p><strong>Conclusion: </strong>The adoption of RATKA and functional alignment is associated with reduced early postoperative pain, modest improvements in PROMs, and improved consistency in achieving target alignment, without increased complications.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"55"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13584641/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148991960","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":"Routine long head of the biceps release improves pain and functional outcomes after arthroscopic rotator cuff repair of degenerative tears: A retrospective comparative study.","authors":"Dimitrios V Papadopoulos, Athanasios Kontogiannis, James R Mullen, Ioannis Papakammenos, Nikolaos Stavropoulos, Konstantinos Tsikopoulos, Ioannis Gkiatas, Vasileios S Nikolaou, George Babis","doi":"10.1051/sicotj/2026018","DOIUrl":"10.1051/sicotj/2026018","url":null,"abstract":"<p><strong>Introduction: </strong>The optimal management of the long head of the biceps tendon (LHBT) during rotator cuff repair remains controversial, particularly when the tendon appears normal. This study aims to compare the clinical outcomes of arthroscopic rotator cuff repair with and without routine LHBT release.</p><p><strong>Methods: </strong>A retrospective study including patients aged >50 years with a repairable rotator cuff tear and documented normal LHBT who underwent arthroscopic surgery was conducted. Patients were divided into two groups: LHBT preservation group (n = 113) and LHBT release group (n = 110). Postoperative evaluation included the visual analog scale (VAS) for pain, while functional outcomes were assessed by the Constant-Murley score and the American Shoulder and Elbow Surgeons (ASES) scores. Postoperative pain and functional outcomes were compared between the two study groups at 12 and 24 months.</p><p><strong>Results: </strong>Groups were comparable in terms of age (p = 0.16), sex (p = 0.30), rotator cuff tear size (p = 0.51), and number of anchors used for the repair (p = 0.44). At 24 months, the LHBT release group demonstrated lower VAS score (p < 0.001), higher Constant-Murley score (medians: 86 vs 81, p < 0.001), and higher ASES score (medians: 90 vs 83, p < 0.001). Regression analysis confirmed that LHBT release is independently associated with improved functional outcomes (coefficient = 4.85, p < 0.001 for Constant-Murley score; coefficient = 6.66, p < 0.001 for ASES score).</p><p><strong>Discussion: </strong>The findings of this study indicate that routine LHBT release during rotator cuff repair, even in the absence of macroscopic pathology, is associated with less postoperative pain and superior functional scores.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"25"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13148789/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147844308","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":"Single-leg versus double-leg weight-bearing radiographs for coronal alignment assessment in patients with lower extremity trauma.","authors":"Naya Pabla, Kairo Noronha, Sathyagopal Siddapureddy, Tachelle Ting, Joseph Cavataio, Elliot Majlessi, Curtis Wilkerson, Rahul Vaidya, Robert Teitge","doi":"10.1051/sicotj/2026073","DOIUrl":"https://doi.org/10.1051/sicotj/2026073","url":null,"abstract":"<p><strong>Introduction: </strong>Accurate assessment of coronal lower extremity alignment is critical for surgical planning and postoperative evaluation following orthopedic trauma. Although double-leg (DL) standing radiographs remain the standard for alignment assessment, single-leg (SL) stance more closely approximates physiologic loading during gait. Prior studies have demonstrated differences between DL and SL alignment measurements in patients with osteoarthritis and elective deformity correction, but comparable data in orthopedic trauma patients are lacking.</p><p><strong>Methods: </strong>We performed a retrospective study of patients presenting to a Level I trauma center after lower extremity orthopedic surgery who underwent DL and SL standing radiographs during the same clinic visit. Lateral distal femoral angle, medial proximal tibial angle, and joint line convergence angle were measured by two blinded evaluators and averaged. The primary outcome was the proportion of limbs with at least one SL-DL difference exceeding the prespecified threshold (>3° for LDFA or MPTA; >2° for JLCA). Bland-Altman analyses assessed agreement, with patient-cluster bootstrap confidence intervals accounting for patients who contributed multiple limb encounters.</p><p><strong>Results: </strong>Forty-nine encounters from 32 patients contributed 91 limb-encounters (64 operated and 27 non-operated). Overall, 69.2% were within all prespecified thresholds, whereas 30.8% exceeded at least one threshold. The proportion exceeding at least one threshold was 40.6% in operated limbs and 7.4% in non-operated limbs. Bland-Altman biases were 0.00° for LDFA, -0.06° for MPTA, and 0.13° for JLCA; corresponding 95% limits of agreement were -5.46° to 5.46°, -4.26° to 4.15°, and -2.74° to 3.00°, respectively.</p><p><strong>Discussion: </strong>Average DL-SL differences were small, but nearly one-third of limbs exceeded at least one prespecified descriptive threshold. Because this study did not establish the accuracy of either imaging condition against an external reference standard, SL radiographs should be viewed as potentially complementary to, rather than superior to, DL radiographs in selected postoperative patients.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"67"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13661124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149185268","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":"Image-based robotic-assisted conversion from partial to total knee arthroplasty under functional alignment: Comparable outcomes to primary total knee arthroplasty.","authors":"Christos Koutserimpas, Enejd Veizi, Charalampos Matzaroglou, Charalampos Kontos, Sébastien Lustig, Reha Tandogan, Konstantinos Dretakis","doi":"10.1051/sicotj/2025056","DOIUrl":"10.1051/sicotj/2025056","url":null,"abstract":"<p><strong>Introduction: </strong>Image-based robotic systems in total knee arthroplasty (TKA) allow for precise implant positioning and soft tissue balance through patient-specific preoperative planning. Functional alignment (FA) leverages the native soft tissue envelope to guide implant placement. However, its application in partial TKA conversion remains limited. This study evaluates the outcomes of image-based robotic-assisted partial-to-TKA conversion under FA principles, comparing them to a cohort of primary robotic TKAs.</p><p><strong>Methods: </strong>This retrospective study analyzed eight partial-to-TKA conversions performed using the image-based robotic system, with a minimum follow-up of 12 months. Demographics, implant constraints, intraoperative positioning, and postoperative outcomes were assessed. The mean age of the revision cohort was 73.3 ± 9.0 years, with a mean follow-up of 39.0 ± 11.5 months. A control group of 50 primary robotic TKAs was used for comparison.</p><p><strong>Results: </strong>Osteoarthritis progression (75%) and aseptic loosening (25%) were the primary reasons for revision. No stems were used, and only one patient (12.5%) required a tibial augment. Postoperative coronal alignment was 1.1° ± 1.9°, and functional outcomes (Knee Society Score-Knee: 84.5 ± 6.7, Knee Society Score-Function: 83.0 ± 7.1, Forgotten Joint Score: 72.8 ± 8.2) were comparable to the primary TKA cohort. No complications or revisions were recorded.</p><p><strong>Conclusion: </strong>FA-based robotic-assisted partial-to-TKA conversion yields functional and implant positioning outcomes comparable to primary robotic TKA while minimizing the need for stems, augments, or constrained implants. Further studies with larger cohorts are needed to confirm these findings.</p><p><strong>Level of evidence: </strong>III.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"1"},"PeriodicalIF":2.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12825415/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146020121","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":"What's new on giant cell tumor of bone.","authors":"Shinji Tsukamoto, Costantino Errani, Tessa Balach, Tomas Zamora, Eduardo Ortiz-Cruz, Raja Bhaskara Rajasekaran, Raymond Yau, Tao Ji, Israel Pérez-Muñoz, Francisco Linares, Andrea Angelini, Pietro Ruggieri, Joseph Benevenia, Andreas F Mavrogenis","doi":"10.1051/sicotj/2025063","DOIUrl":"10.1051/sicotj/2025063","url":null,"abstract":"<p><p>When treating extremities affected by giant cell tumor of bone (GCTB), curettage should be performed to preserve the joint as much as possible in order to obtain a good functional outcome. The local recurrence risk is high following curettage, but new techniques are being developed to reduce local recurrence. We present a review of the literature reporting favorable results of radiofrequency ablation alone in locally recurrent small GCTB. New filling materials are also being developed to prevent non-oncological complications such as arthrosis and fractures. Routine measurement of tartrate-resistant acid phosphatase 5b in serum may be helpful in detecting early instances of local recurrence. For unresectable or metastatic GCTB, there is an urgent need for a new drug that is as effective as denosumab, avoids side effects, and can be administered to pregnant women.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"2"},"PeriodicalIF":2.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12825416/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146020165","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}