Hybrid Oxford unicompartmental knee arthroplasty has lower residual cement extrusion than cemented arthroplasty in treating end-stage unicompartmental knee osteoarthritis

Table 4 Logistic regression model analyses for cement residual of two groups using the possible influencing factors

Variable	OR	95% CI	P-Value
Total Cement Residual
Prosthesis type	3.38	1.28 to 8.98	0.014^a
BMI	0.99	0.94 to 1.05	0.811
Sex	1.27	0.30 to 5.44	0.745
Age	0.99	0.93 to 1.06	0.793
Prosthesis size	1.46	0.83 to 2.58	0.188
Side	0.55	0.21 to 1.44	0.220
Constant	0.20		0.652
Cement Residual at Posterior tibial component
Prosthesis type	4.20	1.55 to 11.42	0.005^a
BMI	0.10	0.95 to 1.05	0.895
Sex	1.47	0.33 to 6.58	0.616
Age	0.99	0.93 to 1.06	0.832
Prosthesis size	1.40	0.79 to 2.50	0.251
Side	0.69	0.26 to 1.86	0.464
Constant	0.08		0.498

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