| Parameters | Allografts group (n = 47) | No allografts group (n = 75) | P value |
|---|
| Area of stress shielding | 0.599 |
| Small | 28 (59.5%) | 41 (54.7%) | |
| Moderate | 13 (27.7%) | 23 (30.7%) | |
| Large | 6 (12.8%) | 11 (14.7%) | |
| Severity of stress shielding | 0.01 |
| Mild | 40 (85.1%) | 48 (64.0%) | |
| Moderate | 5 (10.6%) | 16 (21.3%) | |
| Severe | 2 (4.3%) | 11 (14.7%) | |
| Distal cortical hypertrophy | 14 (29.8%) | 29 (38.7%) | 0.318 |
| Bone restoration in the defect area | < 0.001 |
| Osseous restoration | 30 (63.8%) | 23 (30.7%) | |
| Constant defects | 12 (25.5%) | 30 (40.0%) | |
| Increasing defects | 5 (10.6%) | 22 (29.3%) | |
| Femoral width (mm)* |
| Pre-operation | 31.7 ± 4.4 (22.6–38.0) | 32.2 ± 5.1 (23.9–39.4) | 0.457 |
| Immediate post-operation | 42.1 ± 6.5 (29.9–55.6) | 32.3 ± 5.0 (23.8–39.4) | < 0.001 |
| Latest follow-up | 38.6 ± 7.2 (25.3–57.7) | 31.2 ± 6.5 (22.3–42.5) | < 0.001 |
| Fixation and stability of the stems | 0.672 |
| Stable bone ingrowth | 40 (85.1%) | 59 (78.7%) | |
| Stable fibrous ingrowth | 6 (12.8%) | 14 (18.7%) | |
| Unstable | 1 (2.1%) | 2 (2.7%) | |
| Re-revision | 2 (4.3%) | 3 (4.0%) | 0.945 |
| PJI | 0 (0%) | 1 (1.3%) | |
| AL | 1 (2.1%) | 2 (2.7%) | |
| PFF | 1 (2.1%) | 0 (0%) | |
| HHS |
| Preoperative points | 41.2 ± 10.7 | 43.7 ± 9.9 | 0.281 |
| Postoperative points | 84.6 ± 6.0 | 84.8 ± 6.6 | 0.495 |
| Complications | 4 (8.5%) | 5 (6.7%) | 0.705 |
| Intraoperative fracture | 2 (4.3%) | 3 (4.0%) | |
| Wound infection | 1 (2.1%) | 0 (0%) | |
| Postoperative dislocation | 1 (2.1%) | 2 (2.7%) | |
- *P value was analyzed by the paired t test
