Figure 15.

Metatarsal stress fractures. Coronal short tau inversion recovery (A) and sagittal FSE (B) images in a 33-year-old runner demonstrate marrow edema with a low-signal incomplete fracture line and associated periosteal reaction (white arrowheads) within the distal third metatarsal shaft, consistent with incomplete stress fracture. Sagittal FSE image (C) in a 42-year-old runner demonstrates stress fracture of the proximal second metatarsal shaft with sclerotic margins, consistent with nonunion (white arrow).