Table 1 Demographics of study participants and comparison between the groups
Variables | BG group | Non-BG group | p value |
|---|---|---|---|
Number | 19 (51.4) | 18 (48.6) | - |
Age (years) | 60.9 ± 10.3 (39–81) | 55.8 ± 14.9 (32–82) | 0.280 |
Gender (male) | 8 (42.1) | 14 (77.8) | 0.027 |
Body mass index (kg/m2) | 24.5 ± 2.3 (18.7–27.3) | 24.3 ± 2.6 (20.8–28.9) | 0.221 |
Type of trauma (high energy) | 11 (57.9) | 11 (61.1) | 0.842 |
Fracture classification | 0.665 | ||
31A3 (extension to subtrochanteric region) | 3 | 3 | |
32A1, A2, A3 | 9 | 7 | |
32B1, B2, B3 | 7 | 8 | |
Atypical femoral fracture | 3 (15.8) | 2 (11.1) | 1.000 |
Affected side (right) | 13 (68.4) | 5 (27.8) | 0.013 |
Implant at initial surgery | 0.694 | ||
Conventional IM nail | 5 (26.3) | 4 (22.2) | |
Reconstructive IM nail | 2 (10.5) | 1 (5.6) | |
Short PFN | 5 (26.3) | 3 (16.7) | |
Long PFN | 7 (36.8) | 10 (55.6) | |
The number of previous surgery | 0.151 | ||
1 | 14 (73.7) | 16 (88.9) | |
2 | 5 (26.3) | 1 (5.6) | |
3 | 0 (0.0) | 1 (5.6) | |
Previous open surgery | 16 (84.2) | 13 (72.2) | 0.447 |
Implant failure | 9 (47.4) | 12 (66.7) | 0.236 |
Alignment before revision | |||
Neck-shaft angle (°) | 118.1 ± 3.6 (113–125) | 119.7 ± 2.7 (115–126) | 0.061 |
Sagittal anterior angulation (°) | 5.7 ± 3.2 (2.0–15.0) | 4.2 ± 2.5 (1.0–10.0) | 0.150 |
Fracture gap (mm) | 4.7 ± 1.4 (2.0–8.0) | 4.3 ± 1.6 (2.0–8.0) | 0.306 |
Contralateral neck-shaft angle (°) | 128.1 ± 2.1 (125.0–133.0) | 127.2 ± 1.4 (125.0–130.0) | 0.199 |