Postural Stability Characteristics of Transtibial Amputees Wearing Different Prosthetic Foot Types When Standing on Various Support Surfaces

Table 2

The average and standard deviation of each prosthetic foot and control group during standing on different support surface configurations.

Groups	OSI			APSI			MLSI
	Foam	Firm	Unstable	Foam	Firm	Unstable	Foam	Firm	Unstable
SACH^1	1.88 (1.55)	1.71 (1.25)	2.01 (1.29)	0.95 (0.68)	1.08 (1.02)	1.24 (0.77)	1.31 (1.29)	1.09 (0.92)	1.35 (1.19)
SA^2	2.28 (1.82)	1.9 (1.99)	1.81 (1.07)	1.26 (0.81)	0.80 (0.68)	1.09 (0.86)	1.68 (1.74)	1.58 (1.94)	1.22 (0.77)
ESAR^3	2.55 (1.84)	1.86 (1.34)	2.29 (2.52)	1.48 (1.38)	0.65 (0.34)	1.12 (0.99)	1.88 (1.39)	1.59 (1.35)	1.82 (2.30)
Able-bodied^4	1.13 (0.92)	1.1 (0.94)	1.52 (0.66)	1.02 (0.95)	0.91 (0.79)	1.11 (0.62)	0.33 (0.16)	0.49 (0.53)	0.76 (0.42)
Sig. two tailed (𝑃≤0.05)	1,3§						1,4*
	3,4*						2,4*
							3,4*

∗(1,4), (2,4), and (3,4) indicate significant difference between able-bodiedand prosthetic foot based on the independent samples 𝑡-test.
§(1,3) indicates significant difference between SACH and ESAR foot based on the post hoc analysis.