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Negative margin rate, the incidence of complications and recurrence rate (case, %).
| Groups | Case no. | Negative margin rate | Immune rejection | Infection | Delayed healing | Prosthesis loosening, fracture | Bone fracture, nerve and vascular injury | Incidence of complication | Recurrence rate |
|---|---|---|---|---|---|---|---|---|---|
| Control | 33 | 31 (93.9) | 1 | 2 | 3 | 3 | 2 | 11 (33.3) | 5 (15.2) |
| Observation | 33 | 30 (90.9) | 1 | 0 | 1 | 1 | 1 | 4 (12.1) | 3 (9.1) |
| χ2 | – | 4.227 | – | ||||||
| P-value | 1.000 | 0.040 | 0.708 |
