TABLE 2.

Summary of group differences in knee joint angle, external knee joint moment and walking knee joint stiffness during the weight-acceptance phase of gait. All analyses were

	Stable (n=35)	Unstable (n=17)	Significance (p-value)
Knee Flexion Angle at Heel Contact (°)	5.9 ± 5.1	3.6 ± 5.9	<0.01
Peak Knee Flexion Angle (°)	17.9 ± 5.8	19.1 ± 6.8	0.50
Knee Flexion Excursion (°)	12.3 ± 5.1	15.6 ± 6.0	<0.01
Peak Knee Extension Moment (% BW·HT)	−1.8 ± 0.6	−1.7 ± 0.6	0.83
Peak Knee Flexion Moment (% BW·HT)	3.3 ± 1.9	3.7 ± 1.7	0.61
Change in Sagittal Plane Knee Moment (% BW·HT)	5.1 ± 1.7	5.4 ± 1.4	0.52
Knee Joint Stiffness (% BW·HT/°)	0.7 ± 0.4	0.5 ± 0.2	0.01

adjusted for the group differences in gait speed and gender.