Arthroplasty Today最新文献

{"title":"Defining “Paradoxical Instability” and Other Indications for Aseptic Single-Component Polyethylene Revision: A Cohort Study Including Mid-flexion Instability and Limited Arc of Motion","authors":"Robert Schmidt MD ,&nbsp;Winston Scambler BS ,&nbsp;Jack A. Will BS ,&nbsp;David Shau MD, MBA","doi":"10.1016/j.artd.2025.101835","DOIUrl":"10.1016/j.artd.2025.101835","url":null,"abstract":"<div><h3>Background</h3><div>Single-component polyethylene revision (SCPR) is a less invasive approach for addressing polyethylene wear in total knee arthroplasty by replacing only the tibial polyethylene component. While traditionally used for aseptic ligamentous mid-flexion instability and limited arc of motion, this study introduces paradoxical instability as a third indication, characterized by ligamentous laxity with knee effusion causing mid-flexion instability and secondary flexion contracture.</div></div><div><h3>Methods</h3><div>A retrospective study analyzed 58 consecutive SCPR patients treated by a single fellowship-trained surgeon between 2012 and 2024, with a minimum 2-year follow-up. The cohort included 20 men (34%) and 38 women (66%), with a mean age of 70.2 years and average follow-up of 2.83 years. Patients were categorized into 3 groups: mid-flexion instability (n = 43), limited arc of motion (n = 9), and paradoxical instability (n = 6). Outcomes were assessed using clinical examinations and Knee Society Score 2011 and UCLA activity scores.</div></div><div><h3>Results</h3><div>Clinical success rates defined as good to excellent clinical outcomes were 88.3% (38 of 43) for mid-flexion instability, 88.8% (8 of 9) for limited arc of motion, and 100% (6 of 6) for paradoxical instability patients. No readmissions or reoperations occurred within 90 days postsurgery. The mean hospital stay was 0.87 days.</div></div><div><h3>Conclusions</h3><div>SCPR demonstrated effectiveness in treating all 3 indications, with particularly promising results for paradoxical instability cases. This study establishes paradoxical instability as a distinct clinical entity characterized by knee imbalance, mid-flexion instability, recurrent effusions, and limited motion arc. This limited motion arc is paradoxically treated with an increase of polyethylene thickness. The findings support SCPR as a viable treatment option for carefully selected patients with these conditions.</div></div>","PeriodicalId":37940,"journal":{"name":"Arthroplasty Today","volume":"35 ","pages":"Article 101835"},"PeriodicalIF":2.1,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144988505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extramedullary Relapse of Multiple Myeloma After Total Knee Arthroplasty: Implications for Orthopaedic Surgeons—A Case Report and Literature Review","authors":"Donald C. Hefelfinger MD,&nbsp;Mohamed-Ali Sareini MD,&nbsp;Drew D. Moore MD","doi":"10.1016/j.artd.2025.101834","DOIUrl":"10.1016/j.artd.2025.101834","url":null,"abstract":"<div><div>Multiple myeloma (MM) is a hematologic B-cell malignancy characterized by clonal plasma cell proliferation in the bone marrow. Extramedullary disease is a more aggressive form of MM, in which monoclonal cells proliferate outside the bone marrow, forming plasmacytomas. This case highlights a 56-year-old male presenting with an extramedullary recurrence of MM in the soft tissue surrounding the incision site of his total knee arthroplasty. Fortunately, following radiation and chemotherapy, his most recent evaluation demonstrated complete resolution of the nodules within the radiation field. As orthopaedic surgeons, this case serves as an important reminder to remain vigilant about prior malignancies that may complicate perioperative management.</div></div>","PeriodicalId":37940,"journal":{"name":"Arthroplasty Today","volume":"35 ","pages":"Article 101834"},"PeriodicalIF":2.1,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hip Hemiarthroplasty vs Total Hip Arthroplasty for Femoral Neck Fractures: Reverse Fragility of Reoperation Rates in Randomized Controlled Trials","authors":"Joseph McCafferty MD ,&nbsp;Jack Bragg MD ,&nbsp;Kevin Quindlen MD ,&nbsp;Alexis Driscoll BS ,&nbsp;Nicholas Pagani MD ,&nbsp;Matthew Gordon MD ,&nbsp;Matthew Salzler MD","doi":"10.1016/j.artd.2025.101805","DOIUrl":"10.1016/j.artd.2025.101805","url":null,"abstract":"<div><h3>Background</h3><div>Total hip arthroplasty (THA) has theoretical advantages and disadvantages over hemiarthroplasty for femoral neck fractures. Numerous studies have suggested equivalent reoperation rates between the procedures. The purpose of this study was to use the reverse fragility index (RFI) to evaluate the statistical robustness of randomized controlled trials (RCTs) reporting nonsignificant differences in reoperation rates between hip hemiarthroplasty and THA for femoral neck fractures.</div></div><div><h3>Methods</h3><div>Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, all RCTs that compared reoperation rates between THA and hemiarthroplasty for femoral neck fractures were identified. Studies that reported nonsignificant differences in reoperation rates were included. The RFI and patients lost to follow-up were calculated for each study.</div></div><div><h3>Results</h3><div>We identified 9 RCTs comparing THA and hemiarthroplasty for femoral neck fractures with nonsignificant reoperation rates. The overall median reoperation rate was 6.7%, 7.9% in the hemiarthroplasty group and 5.0% in the THA group. The median RFI was 3, indicating that had the outcome of 3 patients in 1 treatment arm been reversed, the studies' nonsignificant result would change to statistically significant (<em>P</em> &lt; .05). Six of the 9 included studies had a loss to follow-up greater than or equal to the studies' RFI.</div></div><div><h3>Conclusions</h3><div>The results of clinical trials reporting nonsignificant differences in reoperation rates between hemiarthroplasty and THA for femoral neck fractures would become significant if the outcomes of a few patients were reversed. The number of patients needed to reverse these studies' results was frequently less than those lost to follow-up; thus, the neutrality of these studies is fragile.</div></div><div><h3>Level of Evidence</h3><div>1.</div></div>","PeriodicalId":37940,"journal":{"name":"Arthroplasty Today","volume":"35 ","pages":"Article 101805"},"PeriodicalIF":2.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved Walking Steadiness Following total Hip Arthroplasty Compared to Total Knee Arthroplasty","authors":"Kevin A. Wu BS ,&nbsp;David N. Kugelman MD ,&nbsp;Samuel Rosas MD, PhD, MBA ,&nbsp;Sharrieff N. Shah BS ,&nbsp;Sean P. Ryan MD ,&nbsp;Samuel S. Wellman MD ,&nbsp;Michael P. Bolognesi MD ,&nbsp;Thorsten M. Seyler MD, PhD","doi":"10.1016/j.artd.2025.101802","DOIUrl":"10.1016/j.artd.2025.101802","url":null,"abstract":"<div><h3>Background</h3><div>Total knee (TKA) and hip arthroplasty (THA) effectively treat end-stage osteoarthritis by restoring mobility and reducing pain; however, it is unclear how balance and steadiness compare between TKA and THA patients. This study utilized wearable technology to objectively compare functional recovery between TKA and THA patients.</div></div><div><h3>Methods</h3><div>Two Hundred Nine patients underwent TKA (n = 152) or THA (n = 57) and were followed for 1 year. Participants wore Apple Watches with HealthKit to track daily step count, steadiness, standing duration, gait speed, and estimated 6-minute walk test distance. Data were analyzed at baseline, 6 weeks, 6 months, and 12 months postsurgery. Propensity score matching (1:1 ratio) yielded a final cohort of 110 patients (55 TKA, 55 THA). A multivariate regression analysis was conducted to evaluate the effect of THA vs TKA on steadiness, adjusting for contralateral Kellgren–Lawrence classification, age, sex, and body mass index.</div></div><div><h3>Results</h3><div>Both groups improved mobility and endurance, with similar increases in step count, standing duration, and 6-minute walk test distance over 12 months. THA patients showed significantly greater steadiness at 6 (0.63 vs 0.49, <em>P</em> = .031) and 12 months (0.84 vs 0.66, <em>P</em> = .044). Multivariate analysis confirmed that TKA was associated with lower steadiness scores.</div></div><div><h3>Conclusions</h3><div>This study, the first to utilize Apple HealthKit data to compare TKA and THA recovery, found that THA patients exhibit better steadiness and balance recovery at 6 and 12 months. These findings suggest that balance-focused rehabilitation may benefit TKA patients. Wearable technology provides valuable, objective insights, enabling personalized guidance and enhancing patient outcomes.</div></div>","PeriodicalId":37940,"journal":{"name":"Arthroplasty Today","volume":"35 ","pages":"Article 101802"},"PeriodicalIF":2.1,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144893664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"C-Reactive Protein as a Predictor of the Success of Debridement, Antibiotics and Implant Retention in Patients With Periprosthetic Joint Infection: A 17-year Retrospective Study of 2 Major Joint Arthroplasty Centers","authors":"Cheryl Cheuk Wing Kong MBBS ,&nbsp;Dennis King-Hang Yee FRCSEd ,&nbsp;Yan-Chun Cheung FRCSEd ,&nbsp;Wai-Wang Chau MSc (Epi & Biostat) ,&nbsp;Gloria Yan-Ting Lam FRCSEd ,&nbsp;Tsz-Lung Choi FRCSEd ,&nbsp;Jonathan Patrick Ng MRCSEd ,&nbsp;Kevin Ki-Wai Ho FRCS ,&nbsp;Michael Tim-Yun Ong FRCSEd ,&nbsp;Patrick Shu-Hang Yung FRCSEd","doi":"10.1016/j.artd.2025.101799","DOIUrl":"10.1016/j.artd.2025.101799","url":null,"abstract":"<div><h3>Background</h3><div>This retrospective study aims to investigate whether C-reactive protein (CRP) value following debridement, antibiotics, and implant retention (DAIR) procedure is a sensitive and specific marker to monitor the clinical course and predict the outcome of the DAIR procedure.</div></div><div><h3>Methods</h3><div>The electronic clinical management system was used to identify patients who suffered from the first episode of periprosthetic joint infection (PJI) following a total hip or knee arthroplasty and 2) and received DAIR as their first surgical treatment in 2 tertiary hospitals.</div></div><div><h3>Results</h3><div>Sixty-five patients were included in this study. Mean age was 68.5 and 55.7% were female. Mean follow-up duration was 3.31 years. 42 (64.6%) patients had successful DAIR while 23 (35.4%) had failed DAIR. Statistical analysis was carried out. Patients with PJI within 3 months from initial arthroplasty, infected by organism without drug resistance, and symptom onset within 3 days, and who could achieve a CRP cutoff at 5 mg/dL by 2 weeks, were significantly more likely to have successful DAIR (<em>P</em> = .037). The area under the curve was 0.892 (95% confidence interval: 0.811-1.000). Patients with PJI more than 3 months after the initial operation were 24.9 times more likely to fail DAIR after adjustments (<em>P</em> = .019).</div></div><div><h3>Conclusions</h3><div>This is the first study to report a CRP cutoff at 5 mg/dL at 2 weeks was able to assist in identifying patients at higher risk of failure following DAIR procedure.</div></div>","PeriodicalId":37940,"journal":{"name":"Arthroplasty Today","volume":"35 ","pages":"Article 101799"},"PeriodicalIF":2.1,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inverse Kinematic Alignment in Robot-Assisted Total Knee Arthroplasty: A Simplified Surgical Technique","authors":"Ugonna N. Ihekweazu MD ,&nbsp;Timothy B. Alton MD ,&nbsp;Shawn O. Okpara MD ,&nbsp;Philip G. Ghobrial MD ,&nbsp;Corey F. Hryc PhD","doi":"10.1016/j.artd.2025.101798","DOIUrl":"10.1016/j.artd.2025.101798","url":null,"abstract":"<div><div>Inverse kinematic alignment (iKA) is an emerging technique in total knee arthroplasty (TKA) that aims to restore the patients' native tibial joint line obliquity with femoral resections adjusted to balance the knee. By emphasizing joint line restoration and patient-specific balancing, iKA has gained interest as a potentially favorable alternative to traditional alignment techniques. This step-by-step surgical technique aims to outline the essential principles of iKA in robotic-assisted TKA. The method prioritizes an anatomic tibia resection and then a tensioner-based gap balancing technique to recreate natural kinematics. Since the technique is applicable to a wide range of patients and can be integrated to a variety of robotic platforms, iKA offers a promising pathway to standardize personalized alignment in TKA.</div></div>","PeriodicalId":37940,"journal":{"name":"Arthroplasty Today","volume":"35 ","pages":"Article 101798"},"PeriodicalIF":2.1,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surgical Options for Primary Synovial Chondromatosis of the Knee: A Systematic Review","authors":"Zhen Jonathan Liang MBBS (Hons) ,&nbsp;Yu Liu MBBS ,&nbsp;Vachalam Rangasamie Danakkrisna MBBS ,&nbsp;Zi Qiang Glen Liau MBBS, MRCS, MMed (Ortho), FRCS (Ortho), FAMS (Ortho), MBA","doi":"10.1016/j.artd.2025.101796","DOIUrl":"10.1016/j.artd.2025.101796","url":null,"abstract":"<div><h3>Background</h3><div>Synovial chondromatosis is a rare benign condition characterized by the formation of cartilaginous nodules within the synovium of joints, bursae, or tendon sheaths. While nonsurgical management exists, surgical intervention is often necessary. This systematic review aims to evaluate surgical options for managing synovial chondromatosis of the knee and compare recurrence rates following each procedure.</div></div><div><h3>Methods</h3><div>Adhering to the Preferred Reporting Items of Systematic Review and Meta-Analysis guidelines, a literature search was conducted using PubMed, SCOPUS, and Embase, up to April 2025. Studies included detailed surgical interventions for primary synovial chondromatosis of the knee.</div></div><div><h3>Results</h3><div>Thirty-seven studies met the inclusion criteria, comprising 30 case reports, 4 retrospective studies, and 3 case series, involving 120 patients (70 males, 49 females, 1 unspecified). Surgical techniques were categorized into open, arthroscopic, and combined approaches. Open approaches included arthrotomies without synovectomy, partial and total synovectomies, and total knee arthroplasty. Arthroscopic approaches involved washouts and synovectomies (partial and total). Combined approaches included staged surgeries with both open and arthroscopic techniques. Recurrence rates varied: open arthrotomy (0%; 1 and 20 year follow-up), arthroscopic synovectomy (5.71%; average follow-up duration 1.53 years), open synovectomy (12.5%; average follow-up 2.04 years), total knee arthroplasty (20.8% average follow-up 10.3 years), and arthroscopic washout (31.4%; average follow-up 6.56 years). Combined approaches reported no recurrences in 6 cases with average follow-up 1.44 years.</div></div><div><h3>Conclusions</h3><div>This systematic review highlights variability in recurrence across techniques. Arthroscopic synovectomy and combined approaches demonstrated the lowest recurrence; however, the choice of surgical method should be tailored to the individual patient's condition and the surgeon's expertise.</div></div>","PeriodicalId":37940,"journal":{"name":"Arthroplasty Today","volume":"35 ","pages":"Article 101796"},"PeriodicalIF":2.1,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144828764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cementless Tibial Fixation Results in Slower Recovery but Equivalent Outcome at 12 months in Primary Total Knee Arthroplasty","authors":"Khairul Anwar Ayob MSOrth ,&nbsp;Ishaan Jagota BEng ,&nbsp;Joshua Twiggs PhD ,&nbsp;David W. Liu FRACS","doi":"10.1016/j.artd.2025.101792","DOIUrl":"10.1016/j.artd.2025.101792","url":null,"abstract":"<div><h3>Background</h3><div>There is renewed interest in cementless primary total knee arthroplasty (TKA), driven by belief that robotics achieve more precise bone preparation and cementless fixation will improve survivorship, particularly in young patients. We undertook this study to investigate the early recovery trajectory of cementless tibial fixation using a contemporary design in primary TKA.</div></div><div><h3>Methods</h3><div>One hundred and sixty-four propensity score-matched patients who underwent primary TKA with either cemented or reverse hybrid using cementless tibial components were retrospectively analyzed. Knee Injury and Osteoarthritis Outcome Score, Oxford Knee Score, Forgotten Joint Score-12, satisfaction and functional outcome measures including range of motion, sit to stand test, timed up and go, single leg stance, calf raises, and step count were compared between the 2 patient groups during the first 12 months postoperatively.</div></div><div><h3>Results</h3><div>Patients with cemented tibial components had superior Knee Injury and Osteoarthritis Outcome Score scores at 3 and 6 months which was statistically significant. By 12 months, there was no difference in patient-reported outcome measures and overall satisfaction was similar. There was no difference between reverse hybrid and cemented tibial fixation in terms of range of motion and functional outcomes, mean length of stay, complication, blood transfusion, readmission, or reoperation. There were no failures or revisions in either group.</div></div><div><h3>Conclusions</h3><div>Cementless tibial fixation resulted in slower improvement in patient-reported outcome measures during the first 3 to 6 months postoperatively. Patients planned for cementless tibial fixation should be counseled that their recovery may not be as rapid in the first 6 months as cemented fixation.</div></div>","PeriodicalId":37940,"journal":{"name":"Arthroplasty Today","volume":"35 ","pages":"Article 101792"},"PeriodicalIF":2.1,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144828765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comment on “Comparative Efficacy of ChatGPT and DeepSeek in Addressing Patient Queries on Gonarthrosis and Total Knee Arthroplasty”","authors":"Hinpetch Daungsupawong PhD,&nbsp;Viroj Wiwanitkit MD","doi":"10.1016/j.artd.2025.101794","DOIUrl":"10.1016/j.artd.2025.101794","url":null,"abstract":"","PeriodicalId":37940,"journal":{"name":"Arthroplasty Today","volume":"35 ","pages":"Article 101794"},"PeriodicalIF":2.1,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"No Difference in Early Range of Motion Between CORI Robotic-TKA and Conventional-TKA: A Single-Surgeon Series.","authors":"Edward L Major, Harrison T Stone, James R Goetz, Ronald S Clarkson, Gregory S Hawk, Stephen T Duncan, Jeffrey B Selby","doi":"10.1016/j.artd.2025.101797","DOIUrl":"10.1016/j.artd.2025.101797","url":null,"abstract":"<p><strong>Background: </strong>Despite the increasing use of robotic-assisted total knee arthroplasty (r-TKA), data on functional outcomes remain limited. This study evaluated 6-week range of motion (ROM) outcomes in patients who underwent r-TKA vs conventional TKA (c-TKA) to determine whether robotic assistance improves early postoperative ROM.</p><p><strong>Methods: </strong>A retrospective analysis was conducted on consecutive patients who underwent primary TKA by a single surgeon using r-TKA or c-TKA between 2019 and 2023. Exclusion criteria included simultaneous bilateral, revision, unicompartmental, and posttraumatic conversion arthroplasties. Knee flexion and extension ROM were measured preoperatively and at standardized 2- and 6-week postoperative visits. Manipulation under anesthesia (MUA) rates for postoperative stiffness were also analyzed. Linear mixed models assessed between-group differences in ROM over time, adjusting for race, sex, body mass index, and preoperative knee alignment.</p><p><strong>Results: </strong>A total of 1124 patients (mean age 65.5 ± 8.7 years) were included, with 729 (64.9%) in the c-TKA cohort and 395 (35.1%) in the r-TKA cohort. Knee extension ROM between the c-TKA and r-TKA groups was not different preoperatively (1.3 ± 6.7 vs 0.8 ± 5.0; <i>P</i> = .209) or 6 weeks postoperatively (1.1 ± 3.6 vs 1.1 ± 2.9; <i>P</i> = .661). Knee flexion ROM between the c-TKA and r-TKA groups was not different preoperatively (114.7 ± 12.0 vs 115.3 ± 11.7; <i>P</i> = .677) or 6 weeks postoperatively (110.8 ± 12.6 vs 112.3 ± 11.6; <i>P</i> = .185). MUA rates were similar between the c-TKA and r-TKA cohorts (2.5% vs 3.0%; <i>P</i> = .359), respectively.</p><p><strong>Conclusions: </strong>Robotic-assisted TKA demonstrated comparable early postoperative ROM and MUA rates to c-TKA. Future studies should explore long-term ROM outcomes and their correlation with patient-reported outcomes to further guide clinical practice.</p><p><strong>Level of evidence: </strong>III, Retrospective cohort.</p>","PeriodicalId":37940,"journal":{"name":"Arthroplasty Today","volume":"34 ","pages":"101797"},"PeriodicalIF":2.1,"publicationDate":"2025-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12357094/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144875643","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}