Table 3.

Mean values (mm (SD)) of sagital and lateral sway in 1-foot standing on a force plate in 16 patients with unilateral hip OA. The OA limb is compared to the healthy limb and differences between the limbs are expressed in per cent (2-factor ANOVA model)

Parameter		OA	Healthy	Diff (%)	p-value (diff)	p-value (OA)	p-value (healthy)
p-values: See Table 1.
Sagital sway	Preop.	9.8 (4.1)	8.8 (3.2)	–10	0.3	0.7	0.4
	6 months	10.2 (3.1)	8.2 (2.7)	–20	0.02
	2 years	9.6 (3.4)	8.4 (2.4)	–13	0.1
Lateral sway	Preop.	7.3 (1.7)	6.5 (3.6)	–11	0.5	0.9	0.2
	6 months	7.5 (2.3)	5.5 (2.6)	–27	0.09
	2 years	7.2 (2.1)	5.5 (2.7)	–24	0.08