Table 2 Parameters among subtypes of AO/OTA 31-A1 and A2 intertrochanteric fractures
Parameters | A1.1 (n = 5) | A1.2 (n = 16) | A2.1 (n = 38) | A2.2 (n = 15) | A2.3 (n = 6) | P value |
|---|---|---|---|---|---|---|
RACL* (mm) | 97.4 ± 12.9 | 86.0 ± 15.9 | 62.8 ± 12.0 | 57.8 ± 9.3 | 47.9 ± 8.1 | < 0.001 |
RAC* (mm) | 39.1 ± 6.9 | 36.2 ± 7.5 | 34.0 ± 5.0 | 30.9 ± 6.6 | 24.8 ± 4.8 | < 0.001 |
RPC* (mm) | 29.9 ± 4.7 | 26.5 ± 8.4 | 9.8 ± 7.5 | 8.8 ± 4.4 | 6.3 ± 3.5 | < 0.001 |
RLC* (mm) | 37.7 ± 5.7 | 36.7 ± 7.1 | 28.2 ± 5.7 | 26.5 ± 4.7 | 24.1 ± 3.3 | < 0.001 |
γ angle* (mm) | 15.0 ± 13.0 | 16.5 ± 13.4 | 40.9 ± 15.7 | 39.2 ± 12.9 | 38.8 ± 10.5 | < 0.001 |
LWT* (mm) | 34.5 ± 4.3 | 31.4 ± 6.9 | 21.9 ± 4.5 | 19.9 ± 2.9 | 15.6 ± 3.0 | < 0.001 |