title: Sesamoid disorders of the first metatarsophalangeal joint.
abstract: The sesamoid complex is located centrally and plantar to the first metatarsal head, where they are imbedded within the plantar plate, which transmits 50% of body weight and more than 300% during push-off, is susceptible to numerous pathologies. These pathologies include sesamoiditis, stress fracture, avascular necrosis, osteochondral fractures, and chondromalacia, and are secondary to these large weight-bearing loads. This article discusses sesamoid conditions and their relationship with hallux limitus, and reviews the conditions that predispose the first metatarsophalangeal joint to osteoarthritic changes.
authors.affiliation: Foot and Ankle Center, Orthopaedic and Rheumatologic Institute, Cleveland Clinic, Cleveland, Ohio, USA.
authors.forename: Allan
authors.initials: A
authors.lastname: Boike
authors.forename: Molly
authors.initials: M
authors.lastname: Schnirring-Judge
authors.forename: Sean
authors.initials: S
authors.lastname: McMillin
mesh_terms: D001847:Bone Diseases / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D050723:Fractures, Bone / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D020857:Hallux Limitus / Q000209:etiology* / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D010000:Osteitis / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D010027:Osteotomy / Q000379:methods; D012716:Sesamoid Bones / Q000293:injuries