Biomechanical conditions of subtalar joint arthrodesis with calcaneal locking nail: A probabilistic numerical study

Inversion and eversion loads can lead to significant mechanical loading of the bones and to bending and torsional loading of the locking nail. The bending leads to normal displacements in the articular gap. Torsions can lead to significant tangential displacements that have been shown to promote non-union instead of bony fusion.