Table 3.
Postoperative radiological results of study participants and comparison between the new implants
| Variables | Reconstructive IM nail | Long PFN | p value | |
|---|---|---|---|---|
|
BG group (n = 19) |
Number | 11 | 8 | |
| Correction of malalignment after revision | ||||
| Varus correction (°) | 6.2 ± 2.4 (0–9.0) | 6.1 ± 2.7 (0.0–8.0) | 0.840 | |
| Sagittal correction (°) | 3.2 ± 3.7 (0–12.0) | 2.5 ± 1.6 (0.0–4.5) | 0.904 | |
| Gap reduction (mm) | 3.0 ± 1.6 (1.0–6.0) | 2.9 ± 0.6 (2.0–4.0) | 0.968 | |
| Alignment after revision | ||||
| Neck-shaft angle (°) | 124.5 ± 2.5 (120.0–130.0) | 123.9 ± 1.4 (122.0–125.0) | 0.840 | |
| Difference from contralateral side (°) | 3.9 ± 1.2 (2.0–6.0) | 3.8 ± 1.3 (2.0–6.0) | 0.778 | |
| Sagittal anterior angulation (°) | 2.5 ± 0.9 (1.0–4.0) | 3.1 ± 1.2 (1.0–5.0) | 0.310 | |
| Fracture gap (mm) | 1.7 ± 0.6 (1.0–3.0) | 1.9 ± 0.6 (1.0–3.0) | 0.657 | |
|
Non-BG group (n = 18) |
Number | 14 | 4 | |
| Correction of malalignment after revision | ||||
| Varus correction (°) | 3.9 ± 2.1 (0.0–6.0) | 4.8 ± 1.5 (3.0–6.0) | 0.505 | |
| Sagittal correction (°) | 0.4 ± 0.6 (0.0–2.0) | 1.1 ± 0.9 (0.0–2.0) | 0.158 | |
| Gap reduction (mm) | 2.5 ± 1.4 (1.0–6.0) | 2.8 ± 0.5 (2.0–3.0) | 0.574 | |
| Alignment after revision | ||||
| Neck-shaft angle (°) | 123.7 ± 1.8 (121.0–127.0) | 124.3 ± 2.1 (122.0–127.0) | 0.574 | |
| Difference from contralateral side (°) | 3.4 ± 1.1 (2.0–5.0) | 3.3 ± 2.2 (1.0–6.0) | 0.798 | |
| Sagittal anterior angulation (°) | 3.4 ± 1.6 (1.0–7.0) | 4.3 ± 3.0 (1.0–8.0) | 0.645 | |
| Fracture gap (mm) | 1.6 ± 0.6 (1.0–3.0) | 2.0 ± 0.8 (1.0–3.0) | 0.442 | |
|
All participants (n = 37) |
Number | 25 | 12 | |
| Correction of malalignment after revision | ||||
| Varus correction (°) | 4.9 ± 2.4 (0.0–9.0) | 5.7 ± 2.4 (0.0–8.0) | 0.296 | |
| Sagittal correction (°) | 1.7 ± 2.8 (0.0–12.0) | 2.0 ± 1.5 (0.0–4.5) | 0.095 | |
| Gap reduction (mm) | 2.7 ± 1.5 (1.0–6.0) | 2.8 ± 0.6 (2.0–4.0) | 0.491 | |
| Alignment after revision | ||||
| Neck-shaft angle (°) | 124.0 ± 2.1 (120.0–130.0) | 124.0 ± 1.5 (122.0–127.0) | 0.786 | |
| Difference from contralateral side (°) | 3.6 ± 1.2 (2.0–6.0) | 3.6 ± 1.6 (1.0–6.0) | 0.987 | |
| Sagittal anterior angulation (°) | 3.0 ± 1.4 (1.0–7.0) | 3.5 ± 1.9 (1.0–8.0) | 0.511 | |
| Fracture gap (mm) | 1.7 ± 0.6 (0.0–12.0) | 1.9 ± 0.7 (1.0–3.0) | 0.360 | |
Values are presented as mean ± standard deviation (range), or number (%)
IM intramedullary, PFN proximal femur nail, BG bone graft