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Fig. 3C. —Hyperdorsiflexion injury of second metatarsophalangeal joint
of 37-year-old skimboarder. Sagittal T2-weighted fast spin-echo image shows
predominance of high-signal-intensity edema (large arrows) in dorsal
soft tissue surrounding second metatarsophalangeal joint. Edema is scarce in
plantar region. Dorsal aspect of extensor expansion is disrupted and poorly
defined (small arrows). Signal intensity is increased in second
proximal phalanx, consistent with edema. Plantar plate (arrowheads)
has normal low signal intensity.
