TABLE I.

Demographic and Clinical Characteristics of Study Sample

Female (%)	72.1
White (%)	86.3
Age at time of knee arthroplasty* (yr)	67 ± 7.5
Baseline hip pain (%)
Pain in one hip	16
Pain in two hips	18
Baseline lower limb/back pain† (%)	64
Pre-arthroplasty findings*
Kellgren-Lawrence grade (osteoarthritis severity) in contralateral knee‡	2.0 ± 1.4
Walk time (s)	19.7 ± 4.5
WOMAC physical function score (points)	27.1 ± 11.1
Contralateral WOMAC pain score (points)	4.2 ± 4.1
Contralateral flexion contracture (deg)	9.6
Post-arthroplasty ipsilateral WOMAC pain score (points)	3.6 ± 3.7

^*The values are given as the mean, with or without the standard deviation.

^†Pain present in at least one hip, ankle, or foot or in the upper, middle, or lower part of back. ‡Possible range, 0 to 4.