Distribution of Coronal Plane Alignment of the Knee Classification in Chinese Osteoarthritic as Well as Healthy Population
coronal plane alignment of the knee(CPAK) distribution of 246 cases(477 knees) of OA patients and 107 cases(214 knees) of healthy people were examined on long-leg radiographs retrospectively. Radiological measurements and CPAK classification on different Kellgren- Lawrence(K-L) Grade in patients with unilateral total knee arthroplasty(TKA) were compared. Clinical outcomes of CPAK type I patients performed by mechanical alignment(MA) and restricted kinematic alignment(rKA) during TKA were examined. ML algorithm including K nearest neighbors (KNN), random forest(RF), artificial neural networks (ANN), logistic regression(LR) and gradient boosting (GBDT) were established, the dependent variable was set as whether the constitutional phenotype of an arthritic knee classified as type I was type I.
• \- OA group: Data for consecutive OA patients with knee pain who underwent primary TKA by one senior surgeon between August 2021 and July 2023 at a single institution were analyzed retrospectively.
• Healthy group: Data for consecutive visitors at outpatient clinic who underwent long-leg radiographs but without any sign of cartilage degeneration or medical history of low extremity between January 2023 and July 2023 at the same institution were analyzed retrospectively.