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Statistics of postoperative image measurements
| Groups | Number of patients | Anteroposterior dispersion percentage (%) | Lateral dispersion percentage (%) | Anteroposterior screw shaft angle (°) | Lateral screw shaft angle (°) |
|---|---|---|---|---|---|
| Robot navigation group | 30 | 65.13 | 70.08 | 1.08 | 1.25 |
| Freehand group | 30 | 58.29 | 61.53 | 1.2 | 1.82 |
| Statistics | 60 | t = −4.492, P = 0.00 | t = −5.11，P = 0.00 | t = 0.782，P = 0.437 | t = 2.259，P = 0.028 |
