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Table 3 Univariable and Multivariable linear regression analyses of factors influencing postoperative G-KJLO after HTO in derivation set (n = 50)

From: Development and validation of a prediction model for knee joint line orientation after high tibial osteotomy

  Univariable analysis Multivariable analysis
β-coefficient t-value P-value β-coefficient t-value P-value
Postoperative G-KJLO (°)
 BMI −0.030 −0.206 0.838    
 Preoperative G-KJLO (°) 0.673 3.069 < 0.001 0.560 5.882 < 0.001
 Preoperative G-AJLO (°) 0.152 1.067 0.291    
 Preoperative TPI (°) 0.318 2.322 0.025 0.310 2.574 0.013
 Preoperative MTFA (°) −0.398 −3.009 0.004    
 Preoperative tibial width (mm) −0.355 −2.628 0.011    
 Preoperative tibial length (mm) −0.256 −1.838 0.072    
 Preoperative FCO (°) −0.618 −5.447 < 0.001    
 Preoperative JSTA (°) −0.059 −0.412 0.682    
 Preoperative FBA (°) −0.440 −3.391 0.001    
 Correction angle (°) a 0.557 4.642 < 0.001 0.463 7.071 < 0.001
  1. BMI Body mass index, G-KJLO Knee joint line orientation relative to the ground, G-AJLO Ankle joint line orientation relative to the ground, TPI Tibia plateau inclination, MTFA Mechanical tibiofemoral angle, FCO Femoral condylar orientation, JSTA Joint space tilting angle, FBA Femoral bowing angle, HTO High tibial osteotomy
  2. aCorrection angle was defined as the value derived from subtraction of preoperative TPI from postoperative TPI