Table 2.

MRS intragroup analysis at latest followup

Score	Mean value		p Value
	Preoperative	Followup
WOMAC function	39.9	56.3	0.056
WOMAC stiffness	44.9	62.9	0.157
WOMAC pain	41.5	71.3	0.007
WOMAC global	49.2	62.2	0.168
Oxford	34.9	54.9	0.003
SF-12 physical	30.8	37.0	0.220
SF-12 mental	38.9	50.8	0.030
UCLA activity	2.6	3.9	0.528

MRS = modular replacement system.