Constitutional Alignment in Osteoarthritic and Healthy Chinese

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.