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Comparison of complications between the two groups
| Group | n | Femoral neck shortening (cases) | Nonunion of fracture (cases) | Avascular necrosis of femoral head (cases) |
|---|---|---|---|---|
| Observation group | 32 | 2 | 0 | 1 |
| Comparison group | 26 | 6 | 3 | 3 |
| Statistic | χ2 = 0.248 | χ2 = 0.578 | χ2 = 0.954 | |
| P = 0.000 | P = 0.000 | P = 0.000 |
