SICOT-J最新文献

{"title":"Two-stage exchange of infected total hip arthroplasty with a dual-mobility cup is associated with a low instability rate.","authors":"Nicolas Zadel, Céline Cazorla, Anne Carricajo, Thomas Neri, Frédéric Farizon, Bertrand Boyer","doi":"10.1051/sicotj/2025013","DOIUrl":"10.1051/sicotj/2025013","url":null,"abstract":"<p><strong>Introduction: </strong>The two-stage management of hip Prosthetic Joint Infection (PJI) is faced with a high rate of dislocation. Dual mobility (DM) cups have proved effective in reducing the risk of dislocation, but few data are available on the two-stage management of hip PJI. The objectives of this retrospective cohort study were to analyze the rate of dislocation, and the rate of recurrent dislocation and to identify risk factors for dislocation. Our hypothesis was that the use of a DM cup during a two-stage replacement had a low instability rate.</p><p><strong>Methods: </strong>Data from 70 two-stage changes with DM cup reimplantation performed in our centre between 2011 and 2020 were retrospectively collated. The mean age was 69 years [18-93], with a mean follow-up of 3.4 years [1.5-9.6]. Dislocation rates and risk factors for prosthetic instability were collected. Univariate and multivariate analyses were performed to identify risk factors favouring prosthetic instability.</p><p><strong>Results: </strong>The rate of dislocation at the last follow-up was 8.6% (6/70), including 4.3% (3/70) in patients with no infection recurrence. The rate of recurrent dislocation was 0% when infection was controlled. The occurrence of spacer dislocation, the presence of immunosuppressive and antiaggregant medication, the local grade of the McPherson score and infection treatment failure were associated with the occurrence of a dislocation. No risk factors were identified in the multivariate analysis.</p><p><strong>Discussion: </strong>Compared with the rates reported in the literature, the use of a DM cup seems indicated in this context in order to lower the risk of recurrent dislocation. Preventing spacer dislocation and infection recurrence seems to be essential to avoid the risk of instability of the future prosthetic hip.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"11 ","pages":"19"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11924924/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143664992","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":"Inferior outcome of stand-alone short versus long tibial stem in revision total knee arthroplasty. A retrospective comparative study with minimum 2 year follow-up.","authors":"Elsayed Ahmed Abdelatif, Assala Abu Mukh, Ahmed Nady Saleh Elsaid, Ahmed Omar Youssef, Constant Foissey, Elvire Servien, Sebastien Lustig","doi":"10.1051/sicotj/2024054","DOIUrl":"10.1051/sicotj/2024054","url":null,"abstract":"<p><strong>Introduction: </strong>Revision Total Knee Arthroplasty (RTKA) is complex, and induced bone loss might endanger implant fixation and joint stability. Intramedullary stems improve fixation throughout stress redistribution. The current study aims to compare the performance of short tibial stems with long tibial stems, investigating their intermediate-term radiographic and survival outcomes in RTKA. The main hypothesis is that the two types of tibial stems would exhibit similar complication and revision rates in mid-term follow-up.</p><p><strong>Methods: </strong>Patients who underwent RTKA for all causes in a specialized arthroplasty center from 2010 to 2022 with minimum 2-year follow-up were included in this study. Patients receiving mega prosthesis or implants associated with sleeves or cones were excluded. The final groups consisted of 234 knees: 110 patients with short stems (SS) and 124 with long stems (LS). The mean age at surgery was 65.96 ± 8.73 years in SS and 67.07 ± 8.64 years in LS. The mean Body Mass Index (BMI) was 28.95 is SS and 30.88 in LS (p < 0.05). The average follow-up for SS group was 4.24 years and for LS 5.16 years (p < 0.05).</p><p><strong>Results: </strong>Complications and re-revisions did not differ significantly between two groups (p > 0.05). Pathological radiolucency was present in 20.91% in SS group and 33.87% in LS group (p < 0.02). Time-to-re-revision was shorter in SS group and occurred at a mean of 3.1 years, while LS failed at a mean of 5.1 years (p < 0.001).</p><p><strong>Conclusions: </strong>The SS and LS may be comparable in terms of complications and re-revision. SS significantly fails almost 2 years earlier than long stem (p < 0.001). Additionally, there is a higher tendency for re-revision due to loosening in patients who present pathological radiolucency in SS group. To obtain the benefits of short stem and improve the longevity of the construct; adjuvant zone II (metaphyseal) fixation might be the clue.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"11 ","pages":"3"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11748526/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143013859","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":"Safety and early outcomes of simultaneous bilateral TKA in patients with BMI > 40: A retrospective comparative study.","authors":"Alexandre Le Guen, Zakee Azmi, Jesper Fritz, Aymen Alqazzaz, Sébastien Parratte","doi":"10.1051/sicotj/2025019","DOIUrl":"https://doi.org/10.1051/sicotj/2025019","url":null,"abstract":"<p><strong>Introduction: </strong>Simultaneous bilateral total knee arthroplasties (SBTKA) are common in Asia, but surgeons may have a body mass index (BMI) threshold for performing these procedures. However, no guidelines regarding patient weight and SBTKA exist in the literature. We hypothesized that SBTKA can be performed safely and efficiently for morbidly obese patients. We aimed to compare 1) the rate of complications within one year after surgery, 2) operative time, blood loss, and length of stay, and 3) clinical outcomes at one year after SBTKA in patients with BMI < 30 versus 30 < BMI < 40 and BMI > 40.</p><p><strong>Methods: </strong>In this retrospective comparative matched (age, ASA score) study, we evaluated 113 patients who underwent SBTKA (posterior stabilized cemented TKA), between 2019 and 2022. The patient population was grouped based on their BMI: BMI < 30 (33 patients), 30 < BMI < 40 (43 patients), and BMI > 40 (37 patients). A complication was defined as an event that could be classified as a grade > 3 according to the Clavien-Dindo classification within one year of surgery. Data on complication rate, operation time, blood loss, and preoperative and post-operative function KSS at one year were compared.</p><p><strong>Results: </strong>No significant difference in the occurrence of early complications between the three groups was observed. One patient was readmitted for periprosthetic fracture in the BMI < 30 group. There was no significant difference in operative time, blood loss, and KSS score at one year between the three groups. A significant functional improvement was observed in all three groups at the one-year follow-up.</p><p><strong>Discussion: </strong>This study suggests that SBTKA in patients with a BMI > 40 is safe, with no increased complications, similar surgical time, and blood loss. Significant functional improvement was observed at one year postoperatively. While promising, further multi-center studies are needed to confirm these findings and evaluate long-term outcomes.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"11 ","pages":"24"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11996129/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144040309","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":"Cementless versus cemented fixation in image-based robotic total knee arthroplasty guided by functional knee positioning principles.","authors":"Christos Koutserimpas, Pietro Gregori, Enejd Veizi, Luca Andriollo, Elvire Servien, Cécile Batailler, Sébastien Lustig","doi":"10.1051/sicotj/2025027","DOIUrl":"10.1051/sicotj/2025027","url":null,"abstract":"<p><strong>Introduction: </strong>Under functional knee positioning (FKPos) principles, residual varus or valgus alignment of the tibia and femur may be maintained, resulting in loading conditions that differ from those observed with mechanical alignment. Consequently, there is a need for evidence regarding implant fixation (cemented or cementless) in this context. This study aimed to evaluate the impact of implant fixation type (cemented versus cementless) on clinical outcomes, complications, and implant survival in robotic-assisted total knee arthroplasty (TKA) guided by FKPos principles.</p><p><strong>Methods: </strong>A retrospective comparative analysis of 393 patients who underwent robotic-assisted primary TKA was performed. Patients were divided into two groups: cemented (n = 85) and cementless (n =276) fixation. Radiographic alignment, functional outcomes using the Knee Society Score (KSS) and Forgotten Joint Score (FJS), complication rates, and implant survival were assessed at a minimum 2-year follow-up. Subgroup analyses based on femoral and tibial fixation types were also conducted.</p><p><strong>Results: </strong>Both fixation methods achieved comparable functional outcomes (KSS and FJS) and implant survivorship, with no significant differences in revision rates. Hematomas were significantly more frequent in the cementless group (12.32% vs. 8.24%, p = 0.02). Subgroup analyses of femoral and tibial implants showed no significant differences in functional outcomes.</p><p><strong>Discussion: </strong>This study is the first to assess the influence of fixation type on outcomes in robotic-assisted TKA performed under FKPos principles. Both cemented and cementless fixation methods are safe and effective.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"11 ","pages":"32"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12108099/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144152350","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":"Safety and outcomes of bikini-incision DAA for hip arthroplasty with large acetabular cups (≥56 mm): A single-surgeon series of 215 cases.","authors":"Fadhil Mat Salleh, Ikram Nizam","doi":"10.1051/sicotj/2025021","DOIUrl":"https://doi.org/10.1051/sicotj/2025021","url":null,"abstract":"<p><strong>Introduction: </strong>This study evaluates complications associated with the bikini-incision direct anterior approach (DAA) total hip arthroplasty (THA) performed by a single surgeon on a standard operating table, with a focus on cases requiring large acetabular cups (≥56 mm). Secondary objectives include assessing clinical outcomes and implant survivorship.</p><p><strong>Methods: </strong>A retrospective analysis was conducted on primary bikini-incision DAA THAs performed by a single surgeon between 2013 and 2024. Cases involving acetabular cups ≥56 mm were included, while emergency hip fracture cases and those requiring posterolateral approaches were excluded. Clinical data, radiographs, and Kaplan-Meier survival analysis were used to assess complications, Harris Hip Scores (HHS), and implant survivorship.</p><p><strong>Results: </strong>This study included 215 THA procedures performed on 210 male patients (mean age 67 years, BMI 28.6), with an average follow-up of 3.9 years. The primary indication was osteoarthritis (88.4%). The mean preoperative HHS was 41.8, which significantly improved to 92.6 postoperatively (p < 0.001). Complications included lateral femoral cutaneous nerve (LFCN) neuropraxia (2.3%), periprosthetic fractures (0.93%), and femoral stem subsidence (0.93%). The revision rate was 0.93%, with Kaplan-Meier analysis indicating a 99% survival rate for the stem and 100% survival for the acetabular cup at the final follow-up.</p><p><strong>Discussion: </strong>The bikini-incision DAA THA using a standard operating table provides excellent short- to mid-term functional outcomes and implant survivorship for patients requiring large acetabular cups (≥56 mm). The approach is associated with low complication and revision rates, supporting its safety and efficacy in this cohort.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"11 ","pages":"25"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11999402/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144029662","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":"Rotating-platform deep-dish total knee arthroplasty with restricted kinematic alignment: Five-year clinical and functional outcomes.","authors":"Hannes Vermue, Guillaume Mesnard, Elvire Servien, Cécile Batailler, Sébastien Lustig","doi":"10.1051/sicotj/2025018","DOIUrl":"10.1051/sicotj/2025018","url":null,"abstract":"<p><strong>Introduction: </strong>Total knee arthroplasty (TKA) utilizing deep-dish tibial inserts has gained interest due to its high congruency and enhanced stability. However, due to the advent of more personalized alignment philosophies, the combination of a rotating-platform deep-dish TKA design with restricted kinematic alignment (rKA) might improve patient satisfaction. Therefore, this study evaluated the five-year clinical and functional outcomes of rKA with a deep-dish TKA design.</p><p><strong>Methods: </strong>A retrospective analysis was conducted on patients who underwent primary TKA with a rotating-platform deep-dish design and rKA. Of 143 eligible patients, 123 completed five-year follow-up. Clinical and radiographic assessments included the five-year postoperative results: Knee Society Score (KSS), patient satisfaction, range of motion, coronal limb and implant alignment, postoperative complications and implant survivorship. Statistical analyses compared preoperative and postoperative outcomes with paired analyses.</p><p><strong>Results: </strong>Median KSS Knee and Function scores significantly improved from 70 (IQR 5) and 60 (IQR 26) preoperatively to 90 (IQR 20) and 93 (IQR 21) postoperatively (p < 0.001). Postoperative coronal alignment in this study encompassed a hip-knee-ankle angle was 178.1° ± 3.5, a Lateral Distal Femoral Angle of 89.9° ± 2.6, and a Medial Proximal Tibial Angle of 88.6° ± 2.2. At five years, 94% of patients were either satisfied or very satisfied. The revision-free survival rate was 98%. Periprosthetic joint infection and arthrofibrosis were the most common complications (1.6% for both groups separately), followed by aseptic loosening of a cementless femoral component (0.8%) and patellar dislocation (0.8%).</p><p><strong>Discussion: </strong>Rotating-platform deep-dish TKA with restricted kinematic alignment results in excellent functional outcomes, high patient satisfaction, and low complication rates at five-year follow-up. These findings support its viability as a surgical strategy, though long-term studies are warranted to assess implant durability and survivorship beyond 10 years.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"11 ","pages":"33"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12143128/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144235525","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":"Revisiting two thousand hinge fractures in open wedge high tibial osteotomy with a fifty years review: the oscillating saw cannot replace the traditional \"ear-hand\" dialogue between osteotome and hammer to estimate the elastic modulus of bone.","authors":"Claire Bastard, Guillaume Haiat, Philippe Hernigou","doi":"10.1051/sicotj/2024060","DOIUrl":"10.1051/sicotj/2024060","url":null,"abstract":"<p><strong>Background: </strong>Hinge fracture on the lateral part of the tibia (LHF) is a common complication of medial Open Wedge High Tibial Osteotomy (OWHTO). Many factors have been described as risks for these fractures, but no study has compared an osteotome or an oscillating saw to prevent LHF following OWHTO.</p><p><strong>Methods: </strong>This \"propensity-score-matched\" (PSM) study was conducted from data obtained in the literature from 1974 to November 2024. A total of 10,368 knees with OWHTO were identified. After 1:1 matching based on correction amount, posterior slope change, surgeon's experience, the osteotome and oscillating groups comprised 2760 knees each.</p><p><strong>Results: </strong>Among the 5520 knees of the PSM population, the prevalence of LHF was 6.1% in the osteotome alone group (168 cases), and 22% in the oscillating saw group (607 cases). The osteotome group had a significant lower prevalence of hinge fracture than the oscillating saw group (OR, 0.23; 95% CI, 0.19 to 0.27; p < 0.0001) and a lower rate of clinically relevant hinge fractures with revision (OR, 0.34; 95% CI, 0.25 to 0.45; p < 0.001.</p><p><strong>Discussion: </strong>The osteotome may be an appropriate method for preventing hinge fractures following OWHTO.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"11 ","pages":"5"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11748527/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143013874","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":"Thai version of ACL return to sports after injury scale translated with cross-cultural adaptation provided the good validation in Thai patients who received ACL reconstruction.","authors":"Teerapat Laddawong, Chaiyanun Vijittrakarnrung, Patarawan Woratanarat, Nadhaporn Saengpetch","doi":"10.1051/sicotj/2025009","DOIUrl":"10.1051/sicotj/2025009","url":null,"abstract":"<p><strong>Purpose: </strong>The Anterior Cruciate Ligament Return to Sports after Injury scale (ACL-RSI) has been translated and culturally adapted into the Thai version. This study aimed to evaluate the reliability and validity of the Thai ACL-RSI for athletes recovering from ACL reconstruction.</p><p><strong>Methods: </strong>This study was a cross-sectional study. Forward-backward translation, cultural adaptation, and validation of the Thai ACL-RSI were performed and tested in 40 athletes (8 females, 32 males; mean age 30.2 ± 7.32 years; mean body weight 70.7 ± 13.36 kg; mean height 170.1 ± 6.53 cm; mean body mass index 24.5 ± 3.74 kg/m²; mean time from surgery to evaluation 8.43 ± 1.83 months). Participants completed the translated Thai ACL-RSI and the validated Thai Tampa Scale of Kinesiophobia (TSK). The Thai ACL-RSI underwent content validity, internal consistency, reliability, and construct validity assessment.</p><p><strong>Results: </strong>The Thai ACL-RSI demonstrated commendable content validity (item-objective congruence index [IOC] 0.91), internal consistency (Cronbach's alpha coefficient 0.84), and test-retest reliability (intraclass correlation coefficient [ICC] 0.75). There was a significant negative correlation with TSK (r = -0.67, p < 0.001).</p><p><strong>Conclusion: </strong>The Thai ACL-RSI is validated, reliable, and consistent with the Thai TSK. This instrument can potentially measure psychological factors influencing preparedness for sports participation after ACL reconstruction. The evaluation of return-to-sport readiness should involve a multidisciplinary approach, including surgeons, physiotherapists, and psychologists, to ensure a comprehensive assessment of physical, functional, and psychological factors.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"11 ","pages":"15"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11905766/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143626353","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":"Predicting survival outcomes in dedifferentiated chondrosarcoma: a prognostic factor analysis from a National Registry.","authors":"Tomoya Masunaga, Shinji Tsukamoto, Kanya Honoki, Hiromasa Fujii, Akira Kido, Manabu Akahane, Yasuhito Tanaka, Andreas F Mavrogenis, Costantino Errani, Akira Kawai","doi":"10.1051/sicotj/2025011","DOIUrl":"10.1051/sicotj/2025011","url":null,"abstract":"<p><strong>Introduction: </strong>Dedifferentiated chondrosarcoma (DDCS) is a high-grade subtype of chondrosarcoma with a poor prognosis. Treatment for localized DDCS generally involves wide resection; the effectiveness of adjuvant radiotherapy and chemotherapy is questionable. This research was designed to find prognostic factors for DDCS and evaluate the impact of adjuvant therapies on localized cases.</p><p><strong>Methods: </strong>One hundred thirty-two patients with DDCS diagnosed by pathology in the period 2006 to 2022 were identified in the Japanese National Bone and Soft Tissue Tumor Registry database and were retrospectively analyzed.</p><p><strong>Results: </strong>Patients with distant metastases at diagnosis (n = 34) had significantly poorer survival than those without metastases (n = 98), with a 5-year disease-specific survival (DSS) of 9.7% vs. 37.1% (P < 0.0001). For patients without distant metastasis at diagnosis, uni- and multivariate analysis showed that R1 or R2 surgical margin was an independent risk factor linked with unfavorable local recurrence (hazard ratio [HR] 3.39 [95% CI: 1.35-8.52]; P = 0.010). Adjuvant radiotherapy was not associated with local recurrence (HR 2.41 [95% CI: 0.87-6.64]; P = 0.090). Larger size (HR 1.13 [95% CI: 1.06-1.19]; P < 0.001) and no surgery (HR 3.87 [95% CI: 1.61-9.28]; P = 0.002) were independent risk factors for unfavorable DSS. Previous surgery (HR 0.19 [95% CI: 0.04-0.84]; P = 0.028) and adjuvant chemotherapy (HR 0.36 [95% CI: 0.16-0.77]; P = 0.009) were independent risk factors for favorable DSS.</p><p><strong>Discussion: </strong>Survival may have been improved by chemotherapy, but the effect of adjuvant radiotherapy in controlling the local spread of the tumor appears to have been limited in DDCS cases that were localized.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"11 ","pages":"16"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11905765/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143626350","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 positioning in robotic patello-femoral arthroplasty: a step-by-step technique.","authors":"Luca Andriollo, Christos Koutserimpas, Pietro Gregori, Jean Baltzer, Elvire Servien, Cécile Batailler, Sébastien Lustig","doi":"10.1051/sicotj/2025029","DOIUrl":"10.1051/sicotj/2025029","url":null,"abstract":"<p><p>Patello-femoral arthroplasty (PFA) is an effective treatment option for isolated patello-femoral osteoarthritis. However, challenges remain regarding implant positioning and patellar tracking. Recent advances in implant design and robotic-assisted techniques have contributed to more personalized and reproducible procedures. Functional positioning (FP), a three-dimensional alignment concept, introduces a customized approach to optimize trochlear resurfacing and restore joint kinematics of the anterior compartment. This article presents a step-by-step surgical technique for PFA using FP principles in combination with an image-based robotic system. The technique ensures accurate preoperative planning, real-time intraoperative adjustments, and precise component placement. The key steps of this surgical technique include trochlear resurfacing assisted by an image-based robotic system and the restoration of patellar tracking, following a step-by-step approach that is both effective and reproducible. The use of FP enables personalized anterior compartment restoration, avoiding overstuffing and improving patellar tracking. Future studies will help refine FP strategies and further optimize outcomes in these patients.</p>","PeriodicalId":46378,"journal":{"name":"SICOT-J","volume":"11 ","pages":"35"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12158211/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144276199","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}