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Table 1 Results of the 1000 cycles tests for both screws

From: Does thread shape affect the fixation strength of the bioabsorbable interference screws for anterior cruciate ligament reconstructions? A biomechanical study

  2.5 mm pitch 5 mm pitch p
Number of valid samples 9 9  
Maximum insertion torque (N m) 1.74 ± 0.47 1.86 ± 0.34  
Stiffness at 100th cycle (N/mm) 256.4 ± 50.7 259.4 ± 69.4 .757
Stiffness at 1000th cycle (N/mm) 280.3 ± 56.4 275.2 ± 65.0 .965
Displacement at 100th cycle (mm) 1.35 ± 1.15 1.49 ± 2.21 .508
Displacement at 1000th cycle (mm) 6.25 ± 5.66 5.13 ± 4.56 .757
Yield load (N) 482.2 ± 120.2 495.9 ± 131.3 .508
Pull-out stiffness (N/mm) 277.8 ± 71.7 244.5 ± 64.6 .200
Ultimate failure load (N) 656.6 ± 178.7 648.9 ± 169.7 .965
  1. Data are presented as mean ± SD
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