Patient-specific instrumentation improved three-dimensional accuracy in total knee arthroplasty: a comparative radiographic analysis of 1257 total knee arthroplasties

摘要

Postoperative radiographs ( , ) and CT-scan ( ) of a right leg and knee, depicting the methods of angle measurements. The hip-knee-ankle angle (HKA), frontal femoral (FFC), and frontal tibial (FTC) component angle were measured on long-leg weight-bearing radiographs ( ). Lateral femoral (LFC) and lateral tibial (LTC) component angles were evaluated on sagittal short view radiographs ( ). Axial femoral component rotation (FCR) was analyzed on postoperative CT-scans of the knee ( )