Table 1.

Mean pre-operative patient reported outcome scores.

	UKA mean	UKA range	TKA mean	TKA range	Difference in means: P value
SF12 Physical	30.6	15.3–54.4	33.6	20.0–54.8	0.40
WOMAC Pain	46.4	10.0–90.0	42.7	0–100	0.27
KSS	50.9	10.0–80.0	51.2	15.0–85.5	0.38