Table 2.

Physiological Cost Index (PCI)

Measurement	LSS	AKA	p value
Median distance walked (m)	321	107	0.011
Median increase in heart rate (beats per minute)	27	31	0.741
Median PCI (beats per minute/m)	0.078	0.245	0.021

LSS = limb-salvage surgery; AKA = above-knee amputation.