Table 1.

Demographic characteristics of the study group.

Number of knees	148
Male: Female	23:125
Age (years)a	75.5 ± 6.8
BMIa	25.6 ± 3.6
Pre-operative extension anglea	−8.8 $\pm 6.3$
Post-operative extension angle at 6 months a	−3.5 $\pm$ 5.0
MEL (Medial extension laxity)a	−0.31 ± 0.96

∗BMI, Body mass index; MEL, Medial extension gap la^xity.

^aValues are expressed as mean ± standard deviation.