SICOT-J最新文献

{"title":"Tibial tunnel malposition is a risk factor for osteoarthritis following ACL reconstruction at long term follow up: a retrospective study.","authors":"Julien Erard, Maxime Rarchaert, Luca Andriollo, Cécile Batailler, Sébastien Lustig, Elvire Servien","doi":"10.1051/sicotj/2026003","DOIUrl":"10.1051/sicotj/2026003","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to compare long-term radiographic OA development after ACLR according to tunnel positioning assessed on 3D postoperative CT scans.</p><p><strong>Methods: </strong>Tunnel positioning was studied using 3D reconstructions, and tunnels were considered malpositioned if femoral tunnels were classified as type II or III (F), and tibial tunnels had an anteroposterior (AP) gap ≥ 5 mm and/or a mediolateral (ML) gap ≥ 2 mm compared to the native ACL location. Advanced radiographic OA was stages C and D according to the IKDC classification.</p><p><strong>Results: </strong>In this retrospective study, 76 consecutive patients who underwent ACLR were evaluated at a mean follow-up of 10.4 years. The mean age was 34.0 years. At the last follow-up, 18.4% of the patients had an advanced radiographic stage of OA. The distribution of malpositioned tunnels was as follows: 30.3% F, 17.1% AP, 19.7% ML, 11.8% AP+ML, and 5.3% AP+ML+F. There was a significant association between AP+ML (p = 0.022) and AP+ML+F (p < 0.001) tunnels and the IKDC C/D group.</p><p><strong>Conclusion: </strong>The malpositioning of tibial tunnels, specifically the combination of ML and AP displacement, is significantly associated with an advanced radiographic stage of OA at a follow-up of 10 years, regardless of femoral tunnel malposition.</p><p><strong>Level of evidence: </strong>Level II.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"30"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13186520/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147976326","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 and measurement of elbow and knee joints using an electro-goniometer in healthy subjects: A preliminary study.","authors":"Sasipa Buranapuntalug, Nuchrada Chaitrakul, Pollapat Liamtragoolpanich, Chusak Thanawattano, Chatchai Buekban, Kornanong Yuenyongchaiwat","doi":"10.1051/sicotj/2026016","DOIUrl":"10.1051/sicotj/2026016","url":null,"abstract":"<p><strong>Introduction: </strong>Range of Motion (ROM) assessment is a critical baseline metric for diagnosis, treatment monitoring, and rehabilitation goal setting. It significantly impacts patient well-being, aligning with Sustainable Development Goal 3 (SDG 3). However, the universal goniometer (UG), presents limitations regarding accuracy and practical efficiency in clinical settings. Therefore, this study aimed to determine the concurrent validity of an electronic goniometer named Goniwear compared to the UG for measuring elbow and knee angles.</p><p><strong>Methods: </strong>The validity of Goniwear involved 40 healthy volunteers stratified by age (20-39 and 40-59 years) and sex. Simultaneous active and passive ROM measurements were conducted three times using both UG and on flexion and extension of the elbow and knee joints. Data were analyzed using the intraclass correlation coefficients (ICC), which were calculated using a two-way random-effects model, and the Bland-Altman method was used to determine the limits of agreement (LoA) between the UG and Goniwear.</p><p><strong>Results: </strong>Reliability between the two instruments ranged from poor to excellent, depending on the joint and movement type. Elbow flexion and extension demonstrated consistently good to excellent reliability in both active and passive conditions (ICC = 0.84-0.91), with minimal bias and relatively narrow LoA. Knee flexion and extension showed poor to moderate reliability (ICC = 0.44-0.55), particularly for extension, accompanied by a wide LoA.</p><p><strong>Conclusion: </strong>Agreement between the UG and Goniwear varies across joints and movement conditions. While the instruments appear interchangeable for elbow movements, caution is warranted when interpreting knee ROM due to greater measurement variability.</p><p><strong>Discussion: </strong>The Goniwear demonstrates high validity for single-axis joints with fixed pivot points, suggesting strong potential for clinical application in specific contexts.</p><p><strong>Trial registration: </strong>The Thai Clinical Trials Registry is TCTR20251120001.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"23"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13143208/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147844175","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":"Anatomic extension-based description for rotator cuff calcifications: retrospective analysis of 100 consecutive cases.","authors":"Daniel Moya, Jorge Rojas Liévano, Diego Gómez, Federico Alfano, Christos Koukos, Daniel Veloz Serrano, Ricardo Vera","doi":"10.1051/sicotj/2026004","DOIUrl":"10.1051/sicotj/2026004","url":null,"abstract":"<p><strong>Background: </strong>Rotator cuff calcific tendinopathy (RCCT) has traditionally been described as a localized enthesopathy. However, calcium deposits sometimes extend beyond the enthesis into adjacent soft tissues or humeral bone, resulting in atypical patterns not considered in existing classification systems. Failure to recognize these patterns can lead to diagnostic errors or the indication of unnecessary invasive diagnostic procedures.</p><p><strong>Methods: </strong>In order to describe atypical patterns and to assess their incidence, 100 consecutive shoulder cases with radiographically confirmed RCCT were retrospectively reviewed. Calcific deposits were categorized by tendon involvement, size, and morphology. Based on imaging findings, deposits were also classified according to their anatomic location and extension into: Type I (enthesis-confined), Type II (extension into soft tissue), and Type III (bone involvement). Associations between patient characteristics, calcification size, morphology, and location were analyzed.</p><p><strong>Results: </strong>According to the proposed classification, 67% of cases were Type I, 14% showed soft tissue extension (Type II), and 19% involved bone (Type III). Type III group showed a significantly higher proportion of females (83%) compared to the entire cohort (54%) (p < 0.001). Larger deposits (>15 mm) were significantly associated with bone involvement (p < 0.01).</p><p><strong>Conclusion: </strong>Extension of calcium deposits beyond the rotator cuff enthesis was a frequent finding in this series. Incorporating an anatomic extension-based classification may enhance diagnostic precision, possibly avoiding invasive differential diagnostic procedures.</p><p><strong>Level of evidence: </strong>IV.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"17"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13094347/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147724282","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 impact of subsidence on hip function: A comparative study between Proximal Femoral Nail Anti-rotation-2 and Halifax Femoral Nail in unstable trochanteric fractures.","authors":"Soumya Ranjan Nayak, Amit Rastogi, Shivam Sinha, Birju Manjhi, Rahul Rai, Sushil Gandhi","doi":"10.1051/sicotj/2026027","DOIUrl":"10.1051/sicotj/2026027","url":null,"abstract":"<p><strong>Background: </strong>Unstable trochanteric fractures pose a significant challenge in orthopedic surgery, particularly in elderly patients with poor bone quality. Achieving biomechanical stability while minimizing complications requires careful consideration of intramedullary nail design. This study aims to compare two commonly used implants - Proximal Femoral Nail Anti-rotation-2 (PFNA-2) and Halifax Femoral Nail - by evaluating their clinical, radiological, and functional outcomes, with a focus on surgical efficacy, complications, and functional recovery.</p><p><strong>Methods: </strong>A prospective, randomized clinical trial involving 60 elderly patients with AO/OTA 31A2 or 31A3 unstable trochanteric fractures was conducted over 1 year. Patients aged 60-80 years were randomized into two equal groups (n = 30 each) to receive either PFNA-2 or Halifax Nail fixation. Primary outcomes were evaluated using the Harris Hip Score (HHS) at 6 and 12 months postoperatively. Secondary outcome measures included neck-shaft angle, tip-apex distance, and screw positioning according to the Cleveland Index. Operative parameters, including surgical time, blood loss, and complications, were systematically recorded and analyzed.</p><p><strong>Results: </strong>Both implants demonstrated comparable efficacy regarding operative time (Halifax: 31.7 ± 5.5 vs. PFNA-2: 33.0 ± 7.9 min, p = 0.45) and intraoperative blood loss (Halifax: 89.5 ± 12.6 vs.PFNA-2: 97.7 ± 22.9 ml, p = 0.09). Halifax Nail achieved significantly superior screw positioning with 76.7% optimal center-center placement compared to 43.3% in the PFNA-2 group (p = 0.008). Subsidence was absent in the Halifax group but occurred in 6.7% of PFNA-2 cases. HHSs improved progressively in both groups, with Halifax showing marginally higher scores at 6 months (83.6 ± 4.3 vs.81.5 ± 6.4) and 12 months (87.4 ± 3.9 vs.85.8 ± 5.6), though differences were not statistically significant.</p><p><strong>Discussion: </strong>Both PFNA-2 and Halifax Nails are effective for managing unstable trochanteric fractures. The Halifax Nail's innovative tri-wire technology™ offers superior rotational stability, optimal screw positioning, and demonstrates a trend towards reduced subsidence, making it particularly advantageous for patients with compromised bone quality. These findings support individualized implant selection based on patient factors and bone quality assessment.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"58"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13625632/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149082211","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":"Arcuate fracture of the fibular head: two-tunnel surgical technique.","authors":"Bujar Shabani, Dijon Musliu, Dafina Bytyqi, Rosa Ballis","doi":"10.1051/sicotj/2026052","DOIUrl":"10.1051/sicotj/2026052","url":null,"abstract":"<p><p>Avulsion fractures of the fibular head, commonly manifesting as the \"arcuate sign\" on radiographs, are indicative of posterolateral corner (PLC) injuries of the knee and, if inadequately managed, may lead to chronic instability and degenerative joint changes. This technical note describes a novel surgical technique for the fixation of arcuate fractures following failed anchor repair. The procedure involves dual tunnel formation in the fibula and strategic FiberTape passage to achieve anatomical reduction and stable fixation of the avulsed fragment. Key advantages of this approach include a low-profile construct, reproducibility, minimized soft tissue irritation, and lower initial implant-related cost. The technique also allows for restoration of PLC integrity while minimizing the risk for failure. Challenges such as potential unequal suture tension are acknowledged but may be mitigated through meticulous surgical execution. This method represents a reliable and effective alternative for managing unstable arcuate fractures, particularly in cases involving complex PLC injury patterns. Further studies are recommended to validate long-term outcomes and optimize treatment strategies.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"60"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13645344/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149128462","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":"Global research trends in pediatric bone and joint infections: A 50-year bibliometric analysis (1976-2025).","authors":"Raju Vaishya, Ashok N Johari, Brij Mohan Gupta, Ghouse Modin Nabeesab Mamdapur, K S Ali, Abhishek Vaish","doi":"10.1051/sicotj/2026024","DOIUrl":"10.1051/sicotj/2026024","url":null,"abstract":"<p><strong>Background: </strong>Pediatric bone and joint infections (PBJI) remain a major cause of morbidity in children, with evolving trends in epidemiology, diagnostics, and management. A comprehensive understanding of the global research landscape is essential to identify influential contributions, collaboration patterns, and thematic priorities. This study aimed to perform a bibliometric analysis of PBJI research to map productivity, impact, and knowledge structure.</p><p><strong>Methods: </strong>A systematic literature search was conducted in a major bibliographic database to retrieve PBJI-related publications from 1976 to 2025. Bibliometric indicators including total publications (TP), total citations (TC), citations per paper (CPP), relative citation index (RCI), highly cited papers (HCPs), and international collaborative papers (ICPs) were analyzed. Network analyses of keywords, authors, institutions, countries, and journals were performed using VOSviewer to assess collaboration patterns and research themes.</p><p><strong>Results: </strong>A total of 1,556 publications were identified. Journal articles dominated output (82.4%), while reviews showed higher impact (CPP 31.67; RCI 1.90). English-language papers accounted for 89.1% of publications and 97.5% of citations, including all 28 HCPs. Research output and impact were concentrated in a few high-income countries, led by the USA and the UK. Citation distribution was highly skewed, with 18.4% uncited papers and only 6.3% of publications receiving more than 50 citations. Keyword analysis revealed four major thematic clusters centered on osteomyelitis, septic arthritis, pathogens (especially Staphylococcus aureus), diagnostics, and treatment. Collaboration networks were selective and fragmented, with a small core of influential authors and institutions.</p><p><strong>Conclusion: </strong>PBJI research is a mature but uneven field, driven by a limited number of high-impact contributors and focused clinical themes. Strengthening international collaboration and improving visibility of research from underrepresented regions are critical for balanced global advancement.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"12 ","pages":"34"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13221163/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148057449","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: 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}