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Updated: Jul 30, 2026

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Published on: March 11, 2022
Integrity of the first metatarsophalangeal joint: a biomechanical analysis
1Botsford General Hospital, Department of Orthopaedics, Farmington Hills, Michigan, USA.
Abstract:
Five fresh-frozen cadaver feet obtained from traumatic amputations were tested during hyperdorsiflexion stress of the first metatarsophalangeal joint. Three different types of injury were observed: (1) rupture of the capsule proximal to the sesamoids, (2) rupture of the plantar plate distal to the sesamoids, and (3) rupture of the capsular structures medially, allowing a lateral swing of the sesamoids around the metatarsal head. Incomplete dislocation can be associated with significant damage to the plantar plate and other soft tissues of the foot.
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