Table 2. Sex differences in local recurrence rates among patients with primary giant cell tumor of bone around the knee, based on demographic and clinical characteristics.
| Categories | Total | Men | Women | P |
|---|---|---|---|---|
| Total, n (%) | 71 (23.4) | 41 (25.8) | 30 (20.7) | 0.294 |
| Time of recurrence, | 50.5 (54) | 52 (56) | 48 (51) | 0.950 |
| Age of Recurrence, years, mean (SD) | 35.38 (12.01) | 36.77 (12.43) | 33.50 (11.33) | 0.260 |
| Age group, n (%) | ||||
| <20 years | 4 (14.3) | 1 (7.1) | 3 (21.4) | 0.596 |
| 20–39 years | 51 (28.5) | 30 (33.0) | 21 (23.9) | 0.177 |
| ≥40 years | 16 (16.5) | 10 (18.5) | 6 (14.0) | 0.547 |
| Side, n (%) | ||||
| Left Knee | 35 (25.7) | 22 (29.7) | 13 (21.0) | 0.244 |
| Right Knee | 36 (21.4) | 19 (22.4) | 17 (20.5) | 0.768 |
| Location, n (%) | ||||
| Distal femur | 34 (21.8) | 23 (29.1) | 11 (14.3) | 0.025 |
| Proximal tibia | 35 (26.1) | 17 (24.3) | 18 (28.1) | 0.613 |
| Proximal fibula | 2 (18.2) | 1 (14.3) | 1 (25.0) | 1.000 |
| Patella | 0 | 0 | 0 | — |
| Campanacci grade, n (%) | ||||
| I | 8 (33.3) | 4 (30.8) | 4 (36.4) | 1.000 |
| II | 25 (23.1) | 14 (24.6) | 11 (21.6) | 0.713 |
| III | 38 (22.1) | 23 (25.8) | 15 (18.1) | 0.220 |
| Pathologic fracture, n (%) | ||||
| No | 44 (26.0) | 28 (30.4) | 16 (20.8) | 0.154 |
| Yes | 27 (20.0) | 13 (19.4) | 14 (20.6) | 0.863 |
| Surgical technique, n (%) | ||||
| Intralesional curettage | 31 (53.4) | 15 (50.0) | 16 (57.1) | 0.586 |
| Curettage combined resection | 34 (27.6) | 22 (31.0) | 12 (23.1) | 0.333 |
| En bloc marginal resection | 6 (4.9) | 4 (6.9) | 2 (3.1) | 0.419 |