Unicompartmental vs. segmental bicompartmental vs. total knee replacement: comparison of clinical outcomes

Table 4 Within-group statistical analysis of Western Ontario and MacMaster Universities Osteoarthritis Index (WOMAC) sub-scores

	Pre-op vs. 6 months		6 months vs. 1 year		1 year vs. 2 years
	p value	95%CI	p value	95%CI	p value	95%CI
UKR^a
Function	0.178	− 96.9 to 169.9	0.520	− 194.2 to 225.2	0.410	− 2.8 to 5.8
Pain	0.049^*	0.4 to 62.9	0.374	− 112.1 to 142.1	0.041^*	0.3 to 9.7
Stiffness	0.184	− 29.0 to 79.3	0.500	− 292.7 to 342.7	0.750	− 13.3 to − 17.3
BKR^b
Function	< 0.001^*	16.4 to 37.1	0.249	− 6.8 to 22.3	0.172	− 8.0 to 28.5
Pain	0.001^*	17.5 to 45.0	0.080	− 0.6 to 8.1	0.903	− 28.8 to 31.3
Stiffness	0.009^*	7.3 to 36.5	0.665	− 6.9 to 10.1	0.476	− 19.0 to 32.0
TKR^c
Function	< 0.001^*	26.2 to 47.0	0.392	− 9.2 to 21.6	0.700	− 8.0 to 11.0
Pain	< 0.001^*	27.9 to 49.3	0.407	− 10.0 to 22.8	0.580	− 8.4 to 13.4
Stiffness	< 0.001^*	16.4 to 43.3	0.385	− 11.4 to 27.0	0.306	− 7.7 to 20.1

Paired Student’s t test
95%CI confidence interval of mean difference
^*Statistically significant at <0.05 level.
^aUKR unicompartmental knee replacement group (6 months: n = 25; 1 year: n = 18; 2 years: n = 9)
^bBKR bicompartmental knee replacement group (6 months: n = 41; 1 year: n = 29; 2 years: n = 16)
^cTKR total knee replacement group (6 months: n = 45; 1 year: n = 26; 2 years: n = 14)

ISSN: 2234-2451