Table 5. Comparison of the Radiographic Results.
| Variable | Gamma nail (n=72) | U-blade Gamma nail (n=90) | P-value |
|---|---|---|---|
| TAD (mm) | 22.7 (12.4-38.9) | 22.4 (11.32-39.17) | 0.704* |
| TAD over 25 mm | 25 (34.7) | 31 (34.4) | 0.971* |
| Position of lag screw in Cleveland zone | 0.092* | ||
| Zone 5 | 43 (59.7) | 66 (73.3) | |
| Others (zone 4, 6, 8, 9) | 29 (40.3) | 24 (26.7) | |
| Fracture reduction | 0.956* | ||
| Anatomical | 40 (55.6) | 50 (55.6) | |
| Extramedullary | 23 (31.9) | 30 (33.3) | |
| Intramedullary | 9 (12.5) | 10 (11.1) | |
| Fracture reduction by Baumgartner classification | 0.786* | ||
| Good | 38 (52.8) | 49 (54.4) | |
| Acceptable | 29 (40.3) | 35 (38.9) | |
| Poor | 5 (6.9) | 6 (6.7) | |
| Sliding distance (mm) | 4.7±3.68 | 3.6±2.81 | 0.025† |
| Mean bone union duration (wk) | 12.9±9.53 | 10.4±5.28 | 0.053† |
Values are presented as median (range), number (%), or mean±standard deviation.
TAD: tip-apex distance.
*Pearson chi-squared test; †Student t-test.