title: Integrity of the first metatarsophalangeal joint: a biomechanical analysis.
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.
authors.affiliation: Botsford General Hospital, Department of Orthopaedics, Farmington Hills, Michigan, USA.
authors.forename: D
authors.initials: D
authors.lastname: Prieskorn
authors.forename: S
authors.initials: S
authors.lastname: Graves
authors.forename: M
authors.initials: M
authors.lastname: Yen
authors.forename: J
authors.initials: J
authors.lastname: Ray
authors.forename: R
authors.initials: R
authors.lastname: Schultz
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D002102:Cadaver; D005260:Female; D006801:Humans; D008297:Male; D008683:Metatarsophalangeal Joint / Q000033:anatomy & histology / Q000502:physiology; D008875:Middle Aged