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Table 1 Stiffness and failure data from both synthetic bone and cadaveric bone tests

From: Weight-bearing recommendations after first metatarsophalangeal joint arthrodesis fixation: a biomechanical comparison

  

Cyclic loading

Failure loading

Synthetic

 

Stiffness (N/mm)

Maximum allowable load (N)

Unlocked

15.6 (±1.7)

N/A

Locked

18.1 (±2.3)

N/A

Crossed screws

94.7 (±12.5)

101.0 (±17.8)

Plate and lag screw

373.4 (±76.3)

130.9 (±19.4)

Cadaveric

 

Stiffness (N/mm)

Maximum allowable load (N)

Crossed screws

152.4 (±14.2)

93.9 (±14.4)

Plate and lag screw

122.1 (±5.9)

154.1 (±40.7)

  1. This table shows average stiffness, average failure loads, and corresponding standard error for all four constructs tested. The unlocked plate plus screw construct was stiffer than the other constructs for those assembled with the composite bones. Using cadaveric bones did not support that finding with the crossed screws construct having a higher measured stiffness than the unlocked plate plus screw