Table 3 Multivariate logistic regression of six risk factors

Age

1.008

0.980–1.035

NEER classification

 2

Reference

Reference

 3

1.637

0.642–4.174

 4

1.293

0.451–3.704

Humeral head extension

  ≥ 8 mm

Reference

Reference

  < 8 mm

2.138

0.959–4.769

Medial hinge comminuted

 No

Reference

Reference

 Yes

1.857

0.676–5.104

GT comminuted

 No

Reference

Reference

 Yes

1.948

0.659–5.760

Residual GT displacement

  ≤ 5 mm

Reference

Reference

  > 5 mm

7.297

3.406–15.635