What’s Your Diagnosis?

In this feature, AAOS Now publishes a series of images, challenging readers to diagnose the condition depicted.

This month’s challenge was submitted by Jill Larson, MD, a resident member of Northwestern University Feinberg School of Medicine, department of orthopaedic surgery.

The patient is a 27-year-old healthy woman who complained of left dorsal midfoot pain after running a half marathon. The patient reported inverting her left foot approximately 6 miles into the race, but she was able to finish despite the pain. She was evaluated a few days after the race and placed in a CAM boot after a radiograph and MRI (Figs. 1 and 2) were obtained. What’s your diagnosis?

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