swelling or ecchymosis – Move the ankle through six ranges of motion:
Plantar flexion, dorsiflexion, and inversion and eversion in plantar flexion and dorsiflexion
Ankle Injury Differential
Lateral Inversion Sprain
– Most common injury – 85% of all ankle sprains – Lateral ligaments damaged from anterior to
posterior
Bifurcate Ligament Injury
Injury
– Violent Dorsiflexion, Forceful plantar flexion, direct trauma
19% of inversion sprains Avulsion of anterior process of calcaneous Non-weight-bearing cast for four weeks
– Anterior Drawer Test
Assesses the integrity of the anterior talofibular ligament Large number of false negatives is assessed within the first 48 hours 4 - 5 days postinjury has a sensitivity of 86% and specitivity of 74%
5 – 8 wk with rehab.