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Χ2 value: 55.674; p-value <0.001
AP: anteroposterior; NSA: neck shaft angle; X2: Chi square
| Position of calcar screw in head (AP) | NSA<1220 (n=6) | NSA=122-1280 (n=29) | NSA >1290 (n=45) | Total (n=80) |
| Centre | 3 (50.0%) | 15 (52.4%) | 2 (4.4%) | 20 (25.0%) |
| Inferior | 0 | 14 (47.6%) | 43 (95.6%) | 57 (71.2%) |
| Superior | 3 (50.0%) | 0 | 0 | 3 (3.8%) |
