First metatarsophalangeal joint dislocation

Case contributed by Henry Knipe
Diagnosis certain

Presentation

Foot pain post fall. PHx Charcot joint.

Patient Data

Age: 30 years
Gender: Male

Forefoot soft tissue swelling. Dislocation of the first metatarsophalangeal joint. Associated bone fragment and lucency through the first metatarsal neck is suspicious for fracture.

Dense sclerosis of the navicular, possibly representing avascular necrosis. Two K wires are present in the midfoot and the one traversing the talonavicular joint is fractured.

Post reduction

x-ray

Normal metatarsophalangeal joint alignment. Fracture of the first metatarsal head. 

Case Discussion

Metatarsophalangeal joint dislocations are uncommon injuries. 

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