Beware the hallucal interphalangeal joint sesamoid in first metatarsophalangeal joint arthrodesis

The hallucal interphalangeal joint sesamoid (HIPJS) lies within the interphalangeal joint of the great toe (IPJ1) beneath the head of the proximal phalanx. Typically situated in the midline, it may also lie slightly medial or lateral. It ranges from 0.05 to 1.0cm in size. Pyramidal in shape, its plantar osseous oval base is firmly embedded within the dorsal surface of the plantar capsule, above the flexor hallucis longus (FHL) tendon. Its cartilaginous apex points dorsally into the joint cavity.

Source: Foot and Ankle Surgery - April 11, 2018 Category: Orthopaedics Authors: John Wong-Chung, Matthew Arneill, Richard Lloyd Tags: Case report Source Type: research