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Table 2 Preoperative radiologic and clinical assessment

From: The effect of patellar facet angle on patellofemoral alignment and arthritis progression in posterior-stabilized total knee arthroplasty without patellar resurfacing

 Group AGroup Bp value
Radiologic
 KL grade 3/4 (n)20/5210/220.815
 HKA angle (°)172.0 ± 5.6171.4 ± 5.60.585
 Insall-Salvati ratio1.1 ± 0.21.1 ± 0.20.756
 Patellar tilt angle (°)9.8 ± 5.514.6 ± 4.1<  0.001
 Patellar displacement (mm)a−1.0 ± 3.8− 0.5 ± 3.30.431
Clinical
 KSKS45.8 ± 12.746.9 ± 11.40.709
 KSFS36.3 ± 11.837.8 ± 10.90.547
 Feller score15.0 ± 5.714.3 ± 5.60.577
 Kujala score51.0 ± 17.750.6 ± 16.30.930
 ROM (°)118.2 ± 15.4118.9 ± 15.00.858
  1. HKA hip-knee-ankle, KL Kellgren-Lawrence, KSFS Knee Society function score, KSKS Knee Society knee score, ROM range of motion
  2. a A negative value means medial displacement and a positive value means lateral displacement