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Table 4 Simple linear regression of tibial bone resorption at 2 years after surgery

From: Tibial component coverage affects tibial bone resorption and patient-reported outcome measures for patients following total knee arthroplasty

Variables

Simple linear regression

Tibial bone resorption (mm)

Medial

Lateral

Anterior

β

95% CI

p

β

95% CI

p

β

95% CI

p

Age (years)

0.004

−0.081 to 0.088

0.934

0.008

−0.082 to 0.097

0.866

0.053

−0.015 to 0.120

0.127

BMI (kg/m2)

0.135

0.000 to 0.269

0.050

−0.030

−0.175 to 0.115

0.685

−0.045

−0.156 to 0.065

0.418

Sex

−0.246

−1.197 to 0.706

0.610

−0.380

−1.385 to0.625

0.455

−0.252

−1.021 to 0.518

0.518

Side

0.043

−0.875 to 0.961

0.926

0.411

−0.557 to1.379

0.402

0.149

−0.593 to 0.891

0.691

Tibial component coverage (mm)

 Medial

−0.303

−0.486 to − 0.119

0.001

      

 Lateral

   

−0.263

−0.499 to −0.027

0.029

   

 Anterior

      

−0.202

−0.424 to 0.021

0.076

KSS score

 KSS total-pre

0.000

−0.021 to 0.021

0.990

−0.007

−0.029 to 0.016

0.557

0.004

−0.013 to 0.021

0.670

WOMAC pain score

 WOMACp-pre

0.071

−0.174 to 0.316

0.567

0.149

−0.109 to 0.407

0.255

0.005

−0.193 to 0.204

0.957

  1. CI confidence interval; BMI, body mass index; tibial component coverage, over-hang: positive value, under-hang: negative value; KSS score the Knee Society score; WOMAC score, the Western Ontario and McMaster Universities Osteoarthritis index score