Table 3.

Multivariate regression for large bone defects in the glenoid and humeral head

	Parameter	Odds ratio	95% CI		P value
			Lower	Upper
Large glenoid defect a	Male sex	3.391	0.627	18.326	.156
	Nondominant shoulder	1.223	0.452	3.310	.692
	Humeral head defect (mm3/m3)	1.011	1.004	1.017	< .001***
	Number of total instability episodes (times)	1.033	1.013	1.053	.001**
Large humeral head defect b	Male sex	33.180	2.051	536.893	.014*
	Nondominant shoulder	1.127	0.426	2.982	.810
	Age at CT scans (years)	1.053	0.982	1.129	.146
	Age at initial trauma (years)	1.025	0.924	1.136	.643
	Glenoid defect (mm3/m3)	1.012	1.002	1.022	.015*
	Number of self-irreducible dislocations (times)	1.197	1.021	1.404	.027*

^aDefined as the glenoid defect corrected by the patient’s height ≥ 89.7 mm³/m³ (75th percentile)

^bDefined as the humeral head defect corrected by the patient’s height ≥ 129.0 mm³/m³ (75th percentile)

*P < .05; **P < .01; ***P < .001