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Table 3 Logistic regression of risk factors of patellar maltracking

From: Intraoperative patellar maltracking and postoperative radiographic patellar malalignment were more frequent in cases of complete medial collateral ligament release in cruciate-retaining total knee arthroplasty

  B P value Exp (B)
Age − 0.030 0.558 0.970
Sex 2.341 0.116 10.394
Height 0.089 0.743 1.093
Weight −0.199 0.568 0.820
BMI 0.468 0.557 1.596
Preoperative flexion contracture −0.004 0.919 0.996
Preoperative further flexion 0.011 0.815 1.011
Preoperative mechanical axis 0.049 0.355 1.050
Preoperative patellar tilt 0.009 0.936 1.009
Preoperative patellar displacement 0.253 0.075 1.288
Preoperative Insall-Salvati ratio 0.385 0.868 1.470
Preoperative Blackburne-Peel ratio −4.321 0.059 0.013
Preoperative patellar thickness 0.724 0.053 2.062
MCL release 3.025 0.005 20.592
PCL release −0.134 0.858 0.874
Femoral valgus cut angle −0.710 0.074 0.492
Distal femoral cut rotation −0.052 0.799 0.950
  1. MCL medial collateral ligament, PCL posterior cruciate ligament