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Table 5 Values of the torsion tests

From: Development and mechanical testing of a short intramedullary nail for fixation of femoral rotational osteotomy in cerebral palsy patients

Torsion test
Implant Specimen Repetition Relative torsional stiffness (Nm/degree) Mean (±SD) Angle (degree) Mean (±SD)
   1 0.37   3.66  
  1 2 0.41 0.37 (0.04) 3.21 3.64 (0.42)
   3 0.34   4.05  
   1 0.42   4.13  
  2 2 0.51 0.41 (0.11) 2.80 4.00 (1.13)
   3 0.29   5.05  
   1 0.41   5.22  
Nail 3 2 0.48 0.48 (0.06) 3.40 4.26 (0.91)
   3 0.54   4.18  
   1 0.25   5.79  
  4 2 0.29 0.33 (0.12) 4.69 4.82 (0.91)
   3 0.47   3.99  
   1 0.15   8.67  
  5 2 0.15 0.15 (0.00) 9.05 9.09 (0.44)
   3 0.15   9.54  
   1 0.61   3.07  
Plate 1 2 0.58 0.61 (0.04) 3.06 3.00 (0.11)
   3 0.65   2.87  
   1 0.93   2.08  
  2 2 0.95 0.94 (0.01) 2.05 2.06 (0.02)
   3 0.94   2.05  
   1 1.23   1.52  
  3 2 1.53 1.43 (0.17) 1.23 1.34 (0.15)
   3 1.53   1.27  
   1 0.88   2.14  
  4 2 0.88 0.86 (0.03) 2.19 2.19 (0.05)
   3 0.83   2.24  
   1 1.41   1.35  
  5 2 1.51 1.48 (0.06) 1.29 1.30 (0.04)
   3 1.52   1.27  
  1. Values found in the torsion tests according to the groups fixed with plate and nail and variability between repetitions of the mechanical tests.