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Table 1 Baseline Characteristics and radio-morphometric measurement results

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) Level of significance Total
Age at time of injury in years 54.27 ± 16.34 58.51 ± 20.06 p = 0.381 56.7 ± 18.54
BMI at time of injury 26.9 ± 4.1 28.42 ± 6.65 p = 0.336 27.79 ± 5.75
Grade of Quality of reduction (Baumgaertner) I II III I II III p = 0.022*  
30.8% 50.0% 19.2% 11.4% 60.0% 28.6%
Postoperative ventral dislocation of the proximal fragment in mm (x) 5.5 ± 5.7 7.74 ± 5.48 p = 0.155 6.27 ± 5.39
Postoperative lateral dislocation of the proximal fragment in mm (y) 6.62 ± 6.83 6.0 ± 4.05 p = 0.686 6.12 ± 5.40
Ipsilateral CCD-angle (β) (postoperative) 127.46 ± 6.24 123.23 ± 7.05 p = 0.019* 125.06 ± 6.98
Contralateral CCD-angle in ° (β‘) 131.21 ± 5.91 128.66 ± 6.06 p = 0.106 129.75 ± 6.09
Tip-Apex-Distance postoperative in mm 24.87 ± 9.37 28.81 ± 13.91 p = 0.256 27.14 ± 12.25
RUSH-Score at 6 months postoperative 25.15 ± 2.78 17.63 ± 2.34 p = 0.001* 21.32 ± 4.57
Leg-length shortening at 6 months postoperative in mm 1.06 ± 1.3 4.07 ± 8.14 p = 0.193 2.42 ± 5.65
  1. * significant at level p ≤ 0.05