What is the role of imaging in the workup of ankle sprains?

Updated: Jan 14, 2019
  • Author: Craig C Young, MD; Chief Editor: Sherwin SW Ho, MD  more...
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Answer

Plain radiographs may be clinically indicated to diagnose a fracture of the ankle or foot. Ankle stress radiographs contribute little to the management of acute ankle sprains because surgical treatment of the acute sprain is rarely indicated. Abnormal swelling or clinical ankle instability in an acute sprain may be documented with bilateral stress radiographs of the ankle.

MRI is not indicated unless unusual features are present, such as extensive swelling, ecchymosis, or pain, that suggest an osteochondral lesion not observed on plain radiographs. Even if MRI scans demonstrate bone bruising or actual articular cartilage damage, conservative ankle sprain treatment is indicated initially.


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