Table 3.
Comparison of radiological parameters between Intertan and PFNA group
| Intertan Group (n=144) | PFNA group (n=65) | p value | |||
|---|---|---|---|---|---|
|
|
|
||||
| Mean±SD | Min–Max | Mean±SD | Min-Max | ||
| Age, years | 80±9.7 | 65–99 | 85.2±4.5 | 80–104 | <0.001* |
| Gender, female/male | 102/42 | 48/17 | 0.392 | ||
| Stable/unstable | 62 / 82 | 16/49 | 0.008* | ||
| Fracture side | |||||
| Cortical thickness index | 0.485±0.09 | 0.27–0.72 | 0.476±0.10 | 0.28–0.97 | 0.309 |
| Canal-to-calcar ratio | 0.647±0.17 | 0.35–1.33 | 0.568±0.11 | 0.34–0.93 | <0.001* |
| Dorr type, A/B/C | 20/79/45 | 16/46/3 | <0.001* | ||
| Unaffected side | |||||
| Cortical thickness index | 0.530±0.09 | 0.31–0.81 | 0.476±0.09 | 0.27–0.67 | <0.001* |
| Canal-to-calcar ratio | 0.550±0.13 | 0.28–0.95 | 0.567±0.11 | 0.35–0.82 | 0.908 |
| Dorr type, A/B/C | 43/84/17 | 22/39/4 | 0.433 | ||
| Tip apex distance, AP, mm | 13.30±4.05 | 4–22.9 | 10.4±3.9 | 2.2–18.8 | <0.001 |
| Tip apex distance, lateral, mm | 13.2±4.6 | 4–26.6 | 9.41±4 | 1–19 | <0.001 |
| Screw/blade prominence, n | 14 | 15 | 0.010* | ||
| Excessive collapse, n | 23 | 7 | 0.220 | ||
| Failure, n | 10 | 6 | 0.374 | ||
| Re-operation, n | 3 | 2 | 0.496 | ||
SD: Standard deviation; Min: Minimum; Max: Maximum; AP: Anteroposterior; PFNA: Proximal femoral nail anti-rotation.