Table 4.

Clustering results, clinical and gait characteristics (median and [1st–3rd quartiles]), and sagittal kinematic parameters (mean ± SD) for the different clusters (k1 to k5) and results of the one-way ANOVA or Kruskal–Wallis tests.

	k5	k4	k1	k2	k3	p
	Non-SKG	Healthy	UKG (Mild)	BKG (Moderate)	FLG (Severe)

UKG: unbend-knee gait, BKG: braked-knee gait, FLG: frozen-limb gait, mAS_4ceps: modified Ashworth scale for quadriceps femoris muscle, MRC_hip: hip flexor muscles’ strength, MRC_ankle: ankle plantar flexor muscles’ strength. Post hoc significant differences between adjacent clusters are in continuous grey and a vertical broken line indicates that this is not the case between these two adjacent clusters. Description of all abbreviations for kinematic parameters are shown in Table 2.