{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T01:50:03Z","timestamp":1747187403974,"version":"3.40.5"},"reference-count":22,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2024,5,1]],"date-time":"2024-05-01T00:00:00Z","timestamp":1714521600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Surgery"],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>Predicting whether the posterior cruciate ligament (PCL) should be preserved during total knee arthroplasty (TKA) procedures is a complex task in the preoperative phase. The choice to either retain or excise the PCL has a substantial effect on the surgical outcomes and biomechanical integrity of the knee joint after the operation. To enhance surgeons' ability to predict the removal and retention of the PCL in patients before TKA, we developed machine learning models. We also identified significant feature factors that contribute to accurate predictions during this process.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Patients' data on TKA continuously performed by a single surgeon who had intended initially to undergo implantation of cruciate\u2010retaining (CR) prostheses was collected. During the sacrifice of PCL, we utilized anterior\u2010stabilized (AS) tibial bearings. The dataset was split into CR and AS categories to form distinct groups. Relevant information regarding age, gender, body mass index (BMI), the affected side, and preoperative diagnosis was extracted by reviewing the medical records of the patients. To ensure the authenticity of the research, an initial step involved capturing X\u2010ray images before the surgery. These images were then analyzed to determine the height of the medial condyle (MMH) and lateral condyle (LMH), as well as the ratios between MLW and MMH and MLW and LMH. Additionally, the insall\u2010salvati index (ISI) was calculated, and the severity of any varus or valgus deformities was assessed. Eight machine\u2010learning methods were developed to predict the retention of PCL in TKA. Risk factor analysis was performed using the SHApley Additive exPlanations method.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 307 knee joints from 266 patients were included, among which there were 254 females and 53 males. A stratified random sampling technique was used to split patients in a 70:30 ratio into a training dataset and a testing dataset. Eight machine\u2010learning models were trained using data feeding. Except for the AUC of the LGBM Classifier, which is 0.70, the AUCs of other machine learning models are all lower than 0.70. In importance\u2010based analysis, ISI, MMH, LMH, deformity, and age were confirmed as important predictive factors for PCL retention in operations.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The LGBM Classifier model achieved the best performance in predicting PCL retention in TKA. Among the potential risk factors, ISI, MMH, LMH, and deformity played essential roles in the prediction of PCL retention.<\/jats:p><\/jats:sec>","DOI":"10.1111\/os.14076","type":"journal-article","created":{"date-parts":[[2024,5,2]],"date-time":"2024-05-02T03:50:00Z","timestamp":1714621800000},"page":"1381-1389","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Developing a Machine\u2010Learning Predictive Model for Retention of Posterior Cruciate Ligament in Patients Undergoing Total Knee Arthroplasty"],"prefix":"10.1111","volume":"16","author":[{"given":"Long","family":"Chen","sequence":"first","affiliation":[{"name":"Arthritis Clinical and Research Center Peking University People's Hospital, Peking University  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liyi","family":"Zhang","sequence":"additional","affiliation":[{"name":"Orthopedic Department Beijing Jishuitan Hospital  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Diange","family":"Zhou","sequence":"additional","affiliation":[{"name":"Arthritis Clinical and Research Center Peking University People's Hospital, Peking University  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shengjie","family":"Dong","sequence":"additional","affiliation":[{"name":"Orthopedic Department Yantaishan Hospital  Yantai China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6966-3134","authenticated-orcid":false,"given":"Dan","family":"Xing","sequence":"additional","affiliation":[{"name":"Arthritis Clinical and Research Center Peking University People's Hospital, Peking University  Beijing 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