Is the fibula positioned posteriorly in weight-bearing in individuals with chronic ankle instability? A case control study

Imaging Modalities to Diagnose, Follow, and Assess Treatment of Chronic Ankle Instability

“…Lateral stress radiographs can demonstrate sagittal displacement of the fibula, a sensitive sign for the detection of syndesmotic injury 9. Anterior positioning of the fibula has been shown to associate with patients with chronic ankle instability 10. Radiographic widening of the medial clear space is indicative of disruption of the deep fibers of the deltoid, a significant component of ankle instability, and can be diagnosed with greater reliability with stress radiographs.…”

“…9 Anterior positioning of the fibula has been shown to associate with patients with chronic ankle instability. 10 Radiographic widening of the medial clear space is indicative of disruption of the deep fibers of the deltoid, a significant component of ankle instability, and can be diagnosed with greater reliability with stress radiographs. A medial clear space of > 5 mm on dorsiflexion and external rotation stress radiographs has been shown to be reliable for determining deep deltoid ligament insufficiency.…”