Ankle Injury Sustained During a Step Off a Curb

A 56-year-old woman with a past medical history of hypertension presents to an urgent care center 1 hour after she injured her ankle while stepping off a curb. She believes that the ankle “twisted inward” but is not sure. She reports sharp, severe, constant pain throughout the joint and that worsens when she attempts to move the ankle through the range of motion. There is no numbness of the foot or ankle, no pain at the proximal tibia or fibula, and no foot pain. There are no other injuries, and she reports no head or neck pain.

View the image taken (Figure 1) and consider what your diagnosis would be.