Case report 666. Bipartite medial sesamoid below the head of the first metatarsal, a developmental variant.
A specimen of a bipartite sesamoid bone revealed anatomic cartilaginous continuity in the presence of radiographic osseous discontinuity. Hyaline cartilage present between the two ossific foci strongly supported the bipartite ossification process as a developmental variation.
Walling
A K
AK
Florida Orthopaedic Institute, Tampa.
Ogden
J A
JA
D000293:Adolescent; D006801:Humans; D008297:Male; D008682:Metatarsal Bones / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011859:Radiography; D012716:Sesamoid Bones / Q000002:abnormalities* / Q000000981:diagnostic imaging; D014034:Toes / Q000002:abnormalities