Can individual functional improvements be predicted in osteoarthritic patients after total knee arthroplasty?

Table 3 Regression analysis results of change (\(\Delta )\) in WOMAC pain

	Univariate analysis			Multivariate analysis
	Coefficient	P-value	95% CI	Coefficient	P-value	95% CI
Age (years)	0.035	0.013	[0.007, 0.062]	0.002	0.728	[−0.008, 0.011]
Sex (female)	−1.152	0.008	[−1.996, −0.307]	0.369	0.015*	[0.072, 0.665]
Body mass index	−0.038	0.209	[−0.097, 0.021]
Preoperative HKAA	0.032	0.077	[−0.004, 0.068]	0.004	0.508	[−0.008, 0.017]
Postoperative HKAA	−0.018	0.716	[−0.112, 0.077]
Cerebrovascular disease	0.005	0.987	[−0.634, 0.644]
Diabetes mellitus	−0.205	0.363	[−0.646, 0.237]
Hypertension	−0.002	0.994	[−0.404, 0.401]
Ischemic heart disease	−0.500	0.122	[−1.132, 0.133]	−0.066	0.556	[−0.286, 0.154]
Chronic liver disease	−0.129	0.804	[−1.153, 0.895]
Chronic kidney disease	0.312	0.572	[−0.770, 1.393]
Patella resurfacing	−0.154	0.464	[−0.567, 0.259]
Preoperative flexion contracture	−0.025	0.054	[−0.050, 0.000]	−0.003	0.524	[−0.012, 0.006]
Preoperative flexion angle	−0.001	0.854	[−0.013, 0.011]
Postoperative flexion contracture	0.065	0.131	[−0.019, 0.149]	0.039	0.011*	[0.009, 0.070]
Postoperative flexion angle	−0.010	0.269	[−0.029, 0.008]
Preoperative WOMAC pain	−0.975	0.000	[−0.998, −0.952]	−0.976	0.000*	[−0.999, −0.953]

Adjusted R² = 0.881
\(\boldsymbol{\Delta }\), Change in WOMAC scores; C.I. Confidence interval, HKAA Hip-knee-ankle angle, WOMAC Western Ontario and McMaster Universities Osteoarthritis Index
^*statistically significant at P < 0.05

ISSN: 2234-2451