TABLE I.
Patient Characteristics
| Parameters | Cases (N = 8) | Controls (N = 48) | P Value |
| Age* (yr) | 83 (77-88) | 85 (80-90) | 0.399 |
| PFNA length (no. [%]) | 0.743 | ||
| 170 mm | 5 (62.5) | 26 (54.2) | |
| 200 mm | 3 (37.5) | 19 (39.6) | |
| 240 mm | 0 (0.0) | 3 (6.3) | |
| Open reduction† (no. [%]) | 2 (25.0) | 9 (19.1) | 0.702 |
| Risk factors for cutout (no. [%]) | |||
| Preoperative | |||
| Unstable intertrochanteric fracture | 4 (50.0) | 15 (31.3) | 0.300 |
| OTA/AO classification A2.2 | 3 (37.5) | 11 (22.9) | |
| OTA/AO classification A2.3 | 1 (12.5) | 4 (8.3) | |
| Posterolateral fragment | 4 (50.0) | 19 (39.6) | 0.579 |
| Operative | |||
| Medial type of reduction | 5 (62.5) | 5 (10.4) | <0.001 |
| Intramedullary type of reduction | 4 (50.0) | 17 (35.4) | 0.430 |
| Unstable position of the screw | 5 (62.5) | 5 (10.4) | <0.001 |
| TAD of ≥20 mm | 5 (62.5) | 4 (8.3) | <0.001 |
| Weeks from internal fixation to cutout* | 7 (4-13) | – | – |
*
The values are given as the median and the 25th to 75th percentiles.
†
Data are missing on one patient who had open reduction in the control group.