Gait deviations of patients with ruptured anterior cruciate ligament: a cross-sectional gait analysis study on male patients

Table 1 Principal component analysis of kinetics and kinematics

Gait measure	PC	Feature	% of variance	SMD	P-value*
Gait measure	PC	Feature	(cumulative)	(N = 36)	P-value*
(a) Knee extension moment (KEM)	PC1	Overall magnitude	68.5	0.15	0.542
	PC2	Amplitude of moment	89.8	1.02	< 0.001
	PC3	Phase shift	95.6	0.11	0.483
	Interpretation: less amplitude of moment (of ACL ruptured limb)
(b) Knee flexion angle	PC1	Overall flexion angle	56.8	0.3	0.069
	PC2	Flexion at swing phase	75.9	0.26	0.157
	PC3	Flexion at SLS to TDS phase	88.2	0.87	< 0.001
	PC4	Flexion at IDS phase	94.8	0.76	< 0.001
	Interpretation: extension at IDS phase and more flexion at SLS to TDS phase(of ACL ruptured limb)

PC principal component, SMD standardized mean difference, IDS initial double-limb support, SLS single-limb support, TDS terminal double-limb support, IR internal rotation
^*Comparisons were made with paired t-test. Bold face indicates statistical significance

ISSN: 2234-2451