Skip to main content
. Author manuscript; available in PMC: 2015 May 28.
Published in final edited form as: J Orthop Res. 2012 Oct 23;31(3):441–447. doi: 10.1002/jor.22246

Table 3.

Multiple Regression Equations.

Dynamic Variable Multiple Regressions R2 p- value
All
        MLK = −4.61 + 0.61*LPD −0.15*PTA 0.38 <0.001
        SIK = 13.48 −0.62*SIS −0.38*LPD-0.14*RF_Q 0.53 <0.001
        Flexion = 8.435 −0.40*SIS −0.57*PAS 0.36 <0.001
PFPS Cohort
        MLK = −4.14 + 1.52*LPD −0.13*RF_Q 0.62 <0.000
        APK = 2.34 −0.50*APS −0.001*RF_Q 0.38 0.001
        SIK = 16.80 + 0.51*SIS −1.45*LPD +0.15*RF_Q 0.77 <0.001
        Flexion = 7.553 −0.307*SIS −0.540*APS 0.32 0.003
Control Cohort
        Flexion = 20.816 −0.514*SIS −0.383*PTA 0.65 <0.001

Multiple Regressions listed if it increased the predictability more than 5 percentage points from the linear regression.

Abbreviations: MLK, SIK, APK = The medial-lateral, superior-inferior, and anterior-posterior location of the patellar origin relative to the femoral origin measured during active extension at 10° knee angle; LPD, APS, and SIS = the static medial-lateral, anterior-posterior, and superior-inferior location of the patellar origin relative to the femoral origin; PTA = patellar tilt angle; RF-Q angle = The rectus femoris quadriceps angle.