Mechanism of posterior malleolar fracture of the ankle: A cadaveric study.

ABSTRACT:

Objectives

Ankle fracture treatment involves reduction of the bone fragments and stabilization of the joint by reversing the mechanics of injury. For posterior malleolar fracture however, the true mechanism is not understood, leading to a lack of consistent guidance on how to best treat this injury.

Methods

Fifteen cadaver ankles were subjected to fracture loading that replicated the Lauge-Hansen pronation-external rotation mechanism. An axial load was applied to each specimen, which was mounted on a materials testing machine, and the foot was rotated externally to failure. Digital video cameras recorded the failure sequence of specific anatomic structures.

Results

Posterior malleolar fracture occurred in 7 specimens. Of these, 1 was an intra-articular fracture, anoth

SUBMITTER: Haraguchi N 

PROVIDER: S-EPMC8022911 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature