From: Risk factor analysis for delayed union after subtrochanteric femur fracture: quality of reduction and valgization are the key to success
N = 61
Group I (uncomplicated healing)
Group II (delayed union)
Total
High-energy trauma
15 (41.7%)
21 (58.3%)
36 (59.0%)
Low-energy trauma
14 (53.8%)
11 (46.2%)
25 (41.0%)
29 (47.5%)
32 (52.5%)
61 (100%)