SICOT-J最新文献

{"title":"Pilot study: Effects of ovariectomy-induced estrogen deficiency on the biomechanical and structural properties of the intact anterior cruciate ligament in a porcine model.","authors":"Hibiki Kakiage, Tsuneari Takahashi, Yuji Kaneda, Wataru Kurashina, Katsushi Takeshita, Hirotaka Chikuda","doi":"10.1051/sicotj/2026017","DOIUrl":"10.1051/sicotj/2026017","url":null,"abstract":"<p><strong>Introduction: </strong>This pilot study investigated the effects of ovariectomy-induced estrogen deficiency on the biomechanical properties of intact anterior cruciate ligaments (ACLs) in a porcine model, a biological condition that may influence ligament integrity and injury susceptibility.</p><p><strong>Methods: </strong>A bilateral ovariectomy model was used to induce systemic estrogen deficiency. Fourteen two-month-old female pigs were included. Four pigs (8 knees) underwent bilateral ovariectomy (OV group). The left knees of 10 pigs that underwent laparotomy without ovariectomy for a separate study were analyzed as controls (C group). At 12 weeks, knee joints were examined macroscopically, followed by biomechanical testing consisting of cyclic anterior drawer loading and load-to-failure.</p><p><strong>Results: </strong>All ACLs were intact without arthrofibrosis or cartilage degeneration. During cyclic testing, anterior tibial translation was significantly lower in the OV group compared with controls (0.47 ± 0.14 mm vs. 0.82 ± 0.32 mm, P = 0.017). Failure mode differed between groups: all posterolateral bundles in controls avulsed at their insertions, whereas six of eight in the OV group ruptured in the midsubstance (P = 0.0070). No significant between-group differences were observed in yield load, maximum load, stiffness, or elongation at failure.</p><p><strong>Conclusion: </strong>Ovariectomy-induced estrogen deficiency altered ACL failure characteristics and reduced translation without affecting ultimate strength. These findings suggest that ovarian hormone deficiency compromises ligament quality, providing a potential mechanism for increased ACL injury risk in young female athletes. These findings should be interpreted as pilot, hypothesis-generating data.</p><p><strong>Level of evidence: </strong>Experimental laboratory study.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"22"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13127120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147785124","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":"Lateral versus supine positioning for proximal femoral nailing of unstable intertrochanteric fractures in geriatric patients: A prospective randomized comparative study.","authors":"Wessam Fakhery Ebied, Hesham Ossama Soubih, Yahia Haroun, Karim Atef Salem, Amr Amal Amin, Ahmed Sayed Kotb","doi":"10.1051/sicotj/2026015","DOIUrl":"10.1051/sicotj/2026015","url":null,"abstract":"<p><strong>Background: </strong>Patient positioning for proximal femoral nailing (PFN) in unstable intertrochanteric fractures remains controversial and may influence operative efficiency, radiation exposure, and reduction quality. This study compared lateral decubitus PFN without traction versus the conventional supine traction-table technique in geriatric patients.</p><p><strong>Methods: </strong>This prospective randomized comparative study enrolled patients aged >60 years with AO/OTA A2 unstable intertrochanteric fractures who were randomized to supine traction-table PFN (Group A) or lateral decubitus PFN on a radiolucent table (Group B). Primary outcomes were setup time, fluoroscopy (radiation) exposure, and operative time. Secondary outcomes included blood loss, need for open reduction, neck-shaft angle (NSA), tip-apex distance (TAD), and modified Baumgartner reduction quality.</p><p><strong>Results: </strong>Setup time was markedly shorter with lateral positioning (13.73 ± 2.26 vs 43.73 ± 6.19 min; P < 0.001), and radiation exposure was lower (60.53 ± 15.98 vs 68.48 ± 14.65 s; P = 0.023). Blood loss was higher in the lateral group (328.75 ± 84.65 vs 288.75 ± 48.68 mL; P = 0.011), and open reduction was more frequent (57.5% vs 17.5%; P < 0.001). Operative time was comparable (78.53 ± 15.13 vs 74.48 ± 8.56 min; P = 0.145). NSA (135.88 ± 5.94 vs 136.12 ± 6.27°; P = 0.864), TAD (23.58 ± 2.14 vs 23.15 ± 1.73 mm; P = 0.331), and reduction quality (good: 90% in both; P = 1.000) did not differ.</p><p><strong>Conclusions: </strong>Lateral decubitus PFN without traction improved setup efficiency and reduced radiation exposure while maintaining comparable radiographic outcomes, at the expense of more frequent open reduction and modestly higher blood loss.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"21"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13127122/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147785091","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":"Pilot study comparing operating room workflow and team ergonomics in robotic-assisted versus navigated total knee arthroplasty.","authors":"Thomas Aubert, Willem Franssen, Aline Vandeputte","doi":"10.1051/sicotj/2026026","DOIUrl":"10.1051/sicotj/2026026","url":null,"abstract":"<p><strong>Background: </strong>Robotic-assisted systems have been developed to improve the accuracy and reproducibility of total knee arthroplasty (TKA). While outcomes have been widely studied, the effects of these systems on intraoperative workflow and surgical team workload have received less attention. The aim of this study was to compare procedural setup, efficiency, workload, and ergonomics between the VELYS robotic-assisted solution (VRAS) and computer-navigated TKA (NAVI).</p><p><strong>Methods: </strong>Twenty patients who underwent primary TKA performed by a single surgeon, using a single implant type, were enrolled in this research (10VRAS, 10NAVI). Procedural efficiency was assessed by reference to an AI-backed process digital twin platform. Workload was evaluated using NASA-TLX questionnaires, objective ergonomic measures (power tool holding times, retractor holding times, and leg holding times), and a tray analysis.</p><p><strong>Results: </strong>The mean total operating room (OR) time was 69.4 min for the VRAS group and 72.9 min for the NAVI group, with no significant difference. The preparation (22 min) and the breakdown times (12.6 vs.11.7 min) were equivalent. The skin-to-skin times averaged 34.3 min for the VRAS group versus 38.9 min for the NAVI group. NASA-TLX scores revealed significantly lower mental, physical, and temporal demands, reduced effort and frustration, and better perceived performance of the surgeon in the VRAS group (p < 0.05). The instrument burden was similar, 5 trays (21.5 kg) for VRAS and 4 trays (20.9 kg) for NAVI. The objective workload was reduced for the VRAS group, with shorter power tool holding (2.7 vs. 7.7 min, p < 0.001), retractor holding (7.8 vs. 13.0 min, p = 0.01), and leg holding times (3.4 vs. 4.7 min, p = 0.02).</p><p><strong>Discussion: </strong>Compared with navigated TKA, robotic assistance did not prolong overall OR time and was associated with lower measured NASA-TLX scores. These findings suggest that robotic-assisted TKA may offer workflow and ergonomic advantages, although further studies with larger samples are needed to confirm these preliminary observations.</p><p><strong>Level of evidence: </strong>Level 4, retrospective study.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"24"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13143209/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147844327","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":"Development of a knee joint magnetic resonance imaging (MRI)-based model for finite element analysis (FEA) applications.","authors":"Angelo V Vasiliadis, Kalliopi Valsamidou, Alexandros Chortis, Dimitrios Chytas, George Noussios, George Paraskevas, Konstantinos Katakalos, Aikaterini Vassiou","doi":"10.1051/sicotj/2026009","DOIUrl":"10.1051/sicotj/2026009","url":null,"abstract":"<p><strong>Introduction: </strong>The knee is a biomechanically complex joint supported by multiple anatomical structures, making it vulnerable to multiple injuries. Finite element analysis is a valuable tool for studying joint biomechanics, particularly in pre-operative planning and injury evaluation. However, most models are based on computed tomography, which limits soft tissue visualization. Thus, a magnetic resonance imaging-based finite element model of the knee, incorporating bones, ligaments, tendons, cartilage, and menisci, was developed to improve realism and clinical relevance in biomechanical simulations.</p><p><strong>Materials and methods: </strong>Magnetic resonance imaging data were obtained from a healthy adult male using a 1.5T scanner and processed using RETOMO and Rhinoceros software for 3D reconstruction and modeling. Meshes were cleaned, optimized, and anatomically validated. All major knee structures were modeled, including the femur, tibia, fibula, patella, cruciate and collateral ligaments, patellofemoral ligaments, quadriceps and patellar tendons, menisci, and articular cartilage.</p><p><strong>Results: </strong>The resulting model reconstructed both hard and soft tissues of the knee joint with high anatomical fidelity, based on direct MRI segmentation and literature-supported anatomical definitions. The use of magnetic resonance imaging enabled high-resolution identification of soft tissues, while advanced mesh refinement preserved anatomical detail with optimized file management. The inclusion of structures like the anterolateral ligament and patellofemoral ligaments expands the model's clinical relevance in addressing a wider range of knee pathologies.</p><p><strong>Conclusion: </strong>This magnetic resonance imaging-based finite element analysis model provides a detailed and comprehensive, representation of the healthy human knee, including bones, cartilage, menisci, and tendons. While some ligament attachment points were derived from literature rather than MRI data, the model provides a foundation for future biomechanical studies, surgical planning and personalized treatment simulations.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"18"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13094345/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147724260","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":"En bloc discectomy via anterior lumbar approach: a technical note.","authors":"Harmantya Mahadhipta, Amri Muhyi, Muhamad Abdul Harist Fadhlizain, Mitchel Mitchel, Karina Sylvana Gani, Erica Kholinne","doi":"10.1051/sicotj/2026002","DOIUrl":"10.1051/sicotj/2026002","url":null,"abstract":"<p><strong>Introduction: </strong>Implant subsidence remains one of the complications following lumbar interbody fusion and total lumbar disc replacement, often attributed to excessive and uneven preparation of the subchondral bone. To address this limitation, we describe a novel surgical approach - en bloc discectomy - designed to enable more controlled disc removal, preserve subchondral endplate integrity, and minimize the risk of implant subsidence.</p><p><strong>Methods: </strong>We describe the procedural steps for the en bloc discectomy, including patient positioning, surgical approach, and the specific technique using a Cobb spinal elevator to remove the cartilaginous en bloc. The technique's advantages include controlled disc removal, minimized subsidence, and even subchondral endplate preparation.</p><p><strong>Results: </strong>En bloc discectomy was successfully performed in our patient. No intraoperative or postoperative complications occurred, and all patients reported immediate and sustained symptomatic improvement.</p><p><strong>Conclusion: </strong>En bloc discectomy provides a safe and reproducible alternative to conventional (standard piecemeal discectomy) disc excision. By reducing endplate damage and implant subsidence, this technique has the potential to improve long-term stability and clinical outcomes in patients undergoing lumbar interbody procedures.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"19"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13094346/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147724289","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":"Natural history of sleep before and after total joint arthroplasty is poor and unimproved by melatonin: A randomized controlled study.","authors":"Alex Lancaster, Brenna E Blackburn, Shanna Loughmiller, Michael J Archibeck, Jeremy M Gililland, Lucas A Anderson","doi":"10.1051/sicotj/2026029","DOIUrl":"10.1051/sicotj/2026029","url":null,"abstract":"<p><strong>Introduction: </strong>Poor sleep has been shown to affect surgical recovery with negative impacts on function and pain. Osteoarthritis can negatively impact sleep, as can surgery, making arthroplasty patients especially at risk for these ill effects both before and after surgery. Our study goals were to monitor sleep recovery and determine if perioperative melatonin could improve sleep quality compared to a placebo.</p><p><strong>Methods: </strong>From 2020 to 2023, a cohort of 48 primary total hip arthroplasty (THA) and total knee arthroplasty (TKA) patients were randomized to melatonin (n = 23) or placebo (n = 25) for 7 weeks (1 week preoperatively, 6 weeks postoperatively). Patients were excluded if they already used sleep aids or had a sleep disorder. Sleep questionnaires collecting daily sleep and opioid data were electronically administered pre- and postoperatively up to 3 months. Generalized estimating equations were used to assess longitudinal sleep and opioid use.</p><p><strong>Results: </strong>THA patients in the melatonin group had significantly more hours of sleep than the controls, with the numbers available for this study (p = 0.009). However, this did not translate to improved sleep scores overall. There were no significant differences between the melatonin and control groups in the TKA patients. Sleep quality scores significantly improved over time for both hip and knee patients (p = 0.03). For THA patients, sleep scores did not return to baseline until 3 months postoperatively, whereas scores for TKA patients had improved beyond baseline by 2 weeks postoperatively.</p><p><strong>Conclusion: </strong>Sleep disturbance is ubiquitous prior to surgery, and quality and quantity are negatively impacted after TJA surgery as well. TKA patients' sleep improved by 2 weeks, whereas THA patients did not improve till 3 months after surgery. The addition of perioperative melatonin led to more hours of sleep for THA patients but did not otherwise positively impact sleep quality, opioid use, or recovery in primary TJA patients.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"53"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13574313/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148971690","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":"Cemented versus uncemented hemiarthroplasty for femoral neck fracture in patients aged 75 years or older: A retrospective cohort study with 3-year follow-up.","authors":"Daniel Donici, Youssef Jamaleddine, Emeline Chapron, Rémy Coulomb, Pascal Kouyoumdjian","doi":"10.1051/sicotj/2026080","DOIUrl":"10.1051/sicotj/2026080","url":null,"abstract":"<p><strong>Introduction: </strong>Optimal femoral stem fixation for hemiarthroplasty in older adults with displaced intracapsular fractures remains controversial. Cemented stems may reduce mechanical failure, but cementation carries risks. This study compared mortality and complications after cemented versus uncemented hemiarthroplasty in patients aged 75 years or older.</p><p><strong>Methods: </strong>We performed a retrospective study of consecutive patients aged 75 years or older who underwent hemiarthroplasty for intracapsular fracture between January 2015 and April 2022. Patients were grouped by stem fixation and followed until death or censoring in December 2025, allowing at least three years of follow-up. Outcomes included periprosthetic femoral fracture, dislocation, periprosthetic joint infection, a composite of any complication, and all-cause mortality from the early postoperative period to 3 years. Multivariable Cox regression was used for 3-year mortality, and a Fine-Gray competing risk model, with death as the competing event, was used for 3-year complications.</p><p><strong>Results: </strong>We included 531 patients (266 cemented, 265 uncemented). Periprosthetic femoral fracture was more frequent with uncemented stems (4.5% vs. 1.5%, p = 0.042), whereas dislocation was more frequent with cemented stems (6.4% vs. 2.6%, p = 0.038). Periprosthetic joint infection and any complication did not differ significantly between groups at 1 or 3 years, and mortality did not differ at any assessed time point (all p > 0.05). Cemented fixation was not independently associated with 3-year mortality (HR 0.84, 95% CI 0.66-1.07; p = 0.166) or 3-year any complication (sHR 1.01, 95% CI 0.59-1.74; p = 0.977). Older age, male sex, and ASA class 3 to 4 independently predicted higher 3-year mortality.</p><p><strong>Discussion: </strong>In patients aged 75 years or older, stem fixation was associated with different complication patterns, with more periprosthetic fractures after uncemented fixation and more dislocations after cemented fixation. Despite these differences in specific complications, cemented fixation was not independently associated with 3-year mortality.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"61"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13645341/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149128670","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":"Precision in Medial pivot total knee arthroplasty: A retrospective study on mechanical axis alignment and functional outcomes with CT-guided patient-specific instrumentation.","authors":"Fadhil Mat Salleh, Ikram Nizam","doi":"10.1051/sicotj/2026034","DOIUrl":"10.1051/sicotj/2026034","url":null,"abstract":"<p><strong>Background: </strong>Total Knee Arthroplasty (TKA) is the standard treatment for end-stage osteoarthritis, with optimal outcomes dependent on precise mechanical alignment and accurate implant positioning. Patient-specific instrumentation (PSI), facilitated by preoperative CT imaging, has emerged as a technique to enhance surgical precision; however, the relationship between alignment and functional outcomes remains less clear.</p><p><strong>Objective: </strong>To evaluate the effectiveness of medial pivot CT-guided PSI TKA in achieving mechanical axis alignment and its correlation with functional outcomes over a 12-month period.</p><p><strong>Methods: </strong>This retrospective study analysed 389 primary medial pivot TKA procedures performed by a single surgeon between January 2015 and December 2024 using CT-guided PSI. Functional outcomes were assessed using the Oxford Knee Score (OKS) and Lysholm Knee Score (LKS) preoperatively and at three, six, and twelve months postoperatively. Mechanical alignment was evaluated using the Hip-Knee-Ankle (HKA) angle pre- and postoperatively. Descriptive statistics and paired t-tests were applied, with significance set at p < 0.05.</p><p><strong>Results: </strong>The cohort included 389 patients, 62.7% female, with a mean age of 69.6 years and mean BMI of 31.4 kg/m². PSI significantly improved mechanical alignment, with mean HKA increasing from 172.2° preoperatively to 179.5° postoperatively. Functional outcomes also improved, with mean OKS increasing from 18.5 to 38.6 and mean LKS from 52.4 to 85.5. Patients classified as alignment outliers with severe preoperative deformities showed no significant improvement in alignment but demonstrated substantial functional gains.</p><p><strong>Conclusion: </strong>CT-guided PSI improves mechanical alignment and functional outcomes in medial pivot TKA, particularly in mild to moderate deformities. The weak correlation between alignment and functional recovery suggests other factors, including soft tissue balance, prosthesis factors and rehabilitation, to be critical in total knee arthroplasty. Further studies with larger cohorts, longer follow-up, and comparative groups are required.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"40"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13292355/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148309773","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":"Evaluation of the long-term functional outcome and quality of life after rotationplasty in the management of primary malignant bone tumors about the knee in Children.","authors":"Hazem Wafa, Walid Ebeid, Lennart Scheys, Lieven Moke","doi":"10.1051/sicotj/2026023","DOIUrl":"10.1051/sicotj/2026023","url":null,"abstract":"<p><strong>Introduction: </strong>Rotationplasty is a valid surgical technique in the management of bone sarcomas about the knee in children. This technique is often useful in patients with large extraosseous tumor extension and in the very young patients with anticipated significant limb length discrepancy. The aim of this study is to assess the long-term functional outcome and quality of life in our cohort of patients who have survived into adulthood.</p><p><strong>Methods: </strong>We have prospectively analyzed the functional outcome and quality of life in ten rotationplasty survivors. There were five male and five female patients with a mean age at the time of the index procedure of 11.6 ± 2.7 years. The functional outcome was evaluated using the Musculoskeletal Tumor Society Score (MSTS) and the Quality of Life (QoL) was assessed using the core quality of life questionnaire (QLQ-C30) of the EORTC.</p><p><strong>Results: </strong>Patients were followed up for a mean duration of 13.8 ± 4.4 years. The mean overall MSTS functional score was 82.7%. Nine patients reported either no or only minor functional restrictions. Only one patient used a crutch on walking for long distances, while other patients had unlimited or mild limitation of the distance that they could walk. The mean score of the global health status (QoL) was 85.8% with a mean score for social functioning of 90% and a mean score for role functioning of 88.3%.</p><p><strong>Conclusions: </strong>Rotationplasty affords the patients with an active lifestyle with no psychological or psychosocial disadvantages. The long-term assessment confirms that these patients maintain excellent functional results and quality of life through adulthood.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"27"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13171014/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147934404","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":"Atypical femoral fracture: The periprosthetic variant about two cases without bisphosphonate use.","authors":"Guillaume Auberger, Thomas Aubert, Younes Kerroumi, Philippe Leclerc, Simon Marmor","doi":"10.1051/sicotj/2026038","DOIUrl":"10.1051/sicotj/2026038","url":null,"abstract":"<p><p>Atypical femoral fractures are rare. They are well described in patients with prolonged bisphosphonate use. The periprosthetic form without bisphosphonate intake appears to be exceptional and may lead to mechanical complications (nonunion, secondary displacement) if the difficulties of bone healing are not anticipated. We report here two cases of atypical femoral fractures without bisphosphonate use and the resulting implications for surgical fixation.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"41"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13330500/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148377285","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}