Table 1.

Preoperative intergroup analysis between MRS and control groups

Score	Mean value		p Value
	MRS	Control
WOMAC function	39.9	49.8	0.170
WOMAC stiffness	44.9	47.6	0.699
WOMAC pain	41.5	48.9	0.212
WOMAC global	49.2	56.6	0.263
Oxford	34.9	43.2	0.126
SF-12 physical	30.8	32.3	0.558
SF-12 mental	38.9	48.9	0.022
UCLA activity	2.6	4.0	0.211

MRS = modular replacement system.