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Table 1 Group comparison

From: “Revision of subtrochanteric femoral nonunions after intramedullary nailing with dynamic condylar screw”

  Group 1 (n = 27) Group 2 (n = 13) p-value
Sex    0.58
 Female 16 (59.26%) 8 (61.54%)
 Male 11 (40.74%) 5 (38.46%)
Fracture-typea    0.32
 Seinsheimer Type IIA 3 2
 Seinsheimer Type IIB 1 2
 Seinsheimer Type IIIA 10 3
 Seinsheimer Type IIIB 1
 Seinsheimer Type IV 2
 Seinsheimer Type V 1
OTA-typea    0.54
 32A1 1 2
 32A2
 32A3 3 2
 32B2 10 4
 32B3 2
 32C2
 32C3 1
Trauma mechanismb    0.61
 Low energy 16 9
 High energy 6 3
Nonunion-type    0.53
 hypertrophic 3/27 (11.1%) 2/13 (15.4%)
 atrophic 24/27 (88.9%) 11/13 (84.6%)
Age 64.96 ± 15.87 66.31 ± 12.66 0.35
BMIc 26.9 ± 5.41 29.91 ± 5.6 0.57
Time to index procedure (months) 10.37 ± 7.2 8.85 ± 5.77 0.67
Prior surgeries per particpant 0.22 ± 0.42 0.69 ± 1.18 0.21
Mean operation time (minutes) 156.74 ± 42.63 149.08 ± 41.36 0.59
Number of red blood cell units tranfused 2.96 ± 3.57 3.15 ± 3.46 0.87
Lenght of hospital stay (days) 14.74 ± 5.45 15.77 ± 8.64 0.89
Diabetes mellitus 3/27 (11.1%) 0/13 (0%) 0.54
Steroid use 3/27 (11.1%) 0/13 (0%) 0.54
Smoking 3/27 (11.1%) 3/13 (23.1%) 0.37
Osteoporosis 2/27(7.4%) 3/13(23.1%) 0.31
Bony healing 27/27(100%) 10/13(76.92%) 0.03
Healing time (months) 7.96 ± 6.53 23.11 ± 26.57 0.01
Follow-up (months) 21.48 ± 17.52 36.15 ± 50.7 0.54
  1. aincomplete dataset; in 15 participants Information could not be gathered due to incomplete medical records at admission to our clinic
  2. bincomplete dataset; in six participants Information could not be gathered due to incomplete medical records at admission to our clinic
  3. cincomplete dataset; in one participant Information could not be gathered due to incomplete medical records at admission to our clinic