Table 3.

Clinical results before and after propensity score matching

Parameter	Sample	FB-UKR	MB-UKR	Difference	t-score
ROM	Unmatched	118.43	126.14	− 7.71	− 4.48
	Matched	118.43	124.86	− 6.43	− 2.55*
TAS	Unmatched	3.97	3.70	0.27	1.34
	Matched	3.97	3.62	0.35	1.46
SF-36 Function	Unmatched	85.71	74.47	11.24	2.77
	Matched	85.71	77.38	8.33	1.77
SF-36 Role function	Unmatched	78.75	73.42	5.33	0.79
	Matched	78.75	75.24	3.51	0.44
SF-36 Pain	Unmatched	78.00	70.71	7.29	1.42
	Matched	78.00	76.30	1.70	0.24
SF-36 Condition	Unmatched	71.54	64.15	7.39	2.03
	Matched	71.54	67.10	4.44	0.88
SF-36 Vitality	Unmatched	68.21	63.73	4.48	1.30
	Matched	68.21	66.90	1.31	0.29
SF-36 Social function	Unmatched	91.07	85.76	5.31	1.36
	Matched	91.07	88.45	2.62	0.60
SF-36 Emotional	Unmatched	83.57	82.56	1.01	0.17
	Matched	83.57	84.44	− 0.87	− 0.12
SF-36 Psychologic	Unmatched	77.29	76.96	0.32	0.10
	Matched	77.29	81.71	− 4.42	− 1.12
AKSS-F	Unmatched	93.14	89.30	3.84	1.37
	Matched	93.14	89.19	3.95	1.19
AKSS-O	Unmatched	96.86	89.44	7.42	3.38
	Matched	96.86	91.83	5.03	1.90

ROM range of motion, TAS Tegner Activiy Scale, SF-36 Short form 36 health survey, AKSS American Knee Society Score, FB fixed-bearing, MB mobile-bearing, UKR unicompartmental knee replacement

*p < 0.05