. Author manuscript; available in PMC: 2014 Feb 1.

Published in final edited form as: J Orthop Res. 2012 Aug 31;31(2):173–182. doi: 10.1002/jor.22214

Table 2.

Group 1 Pre vs Post operative range of motion measurements demonstrate significantly increased ranges of motion following hip arthroplasty.

Group 1 (n=21)	Pre-Op	Post-Op^*	P value^**
Flexion	104 (70–140)	128 (110–145)	p<0.0001
Flexion contracture	19 (0–65)	1 (0–5)	p<0.0001
Abd (in extension)	27 (−20–60)	48 (30–60)	p<0.0001
Add (in extension)	20 (5–45)	32 (10–45)	p<0.0001
Internal Rotation	3 (−10–30)	48 (15–60)	p<0.01
External Rotation	11 (−10–35)	47 (30–90)	p<0.01
Rotation Arc	23 (0–75)	93 (65–145)	p<0.0001
SF-12	36.7 (25.0–56.2)	53.7 (29.6–66.7)	P<0.0008
SF-12 (Group 2)	29.6 (17.0–41.4)	49.5 (28.7–59.4)	p<0.0001

At last follow-up average 2.26 (1–4) years post operative

^**

Wilcoxon (one-tailed, matched pair) statistical comparison.