Table 39: Study Outcome Measures.

Study	Physical Functioning	Pain	Stiffness	Global Assessment	Quality of Life	Length of Follow-up
Gocen et al., 2004 (32)	Harris Hip score (0 = extreme difficulty; 100 = no difficulty) Number of days to start walking, climbing stairs, transferring activities Range of hip abduction	Visual Analogue Scale (VAS)	Not assessed	Not assessed	Not assessed	Baseline,* immediately† preoperatively, at discharge, postoperatively at 3 months and 2 years
Gilbey et al., 2003 (31)	WOMAC (0 points = no difficulty with physical functioning; 4 = extreme difficulty with physical functioning), Total WOMAC score (0 = best functioning; 100 = worst functioning) Strength of bilateral thigh flexor and extensor muscles, isometric thigh abduction strength, hip flexion ROM	WOMAC (0 = no pain; 4 = extreme pain)	WOMAC (0 = no stiffness; 4 points = extreme stiffness)	Patient satisfaction questionnaire	Not assessed	Baseline (8 weeks before surgery) Preoperatively 1 week before surgery Postoperatively at 3 weeks, 12 weeks and 24 weeks

^*Harris Hip Score baseline measurement taken 8 weeks before surgery in preoperative exercise group (treatment group) only.

^†Harris Hip Score measurement taken in treatment and control groups immediately preoperatively.