Tuberosity Of The Fifth Metatarsal Bone, Lateral View

Description

Tuberositas ossis metatarsalis V (the styloid process) dominates the lateral aspect of the proximal fifth metatarsal in this illustration, projecting posteriorly and slightly plantar to the metatarsal shaft. From the lateral viewpoint, the roughened apophysis at the base is contrasted against the smoother lateral cortex of the diaphysis as it extends distally toward the head of the fifth metatarsal. The proximal articular region for the cuboid lies medial and slightly plantar to the tuberosity, marking the lateral column of the midfoot and the transition from tarsus to metatarsus. Fibularis brevis inserts on this tuberosity, so the surface texture and bony contour shown here map directly to traction forces that drive common injuries at the base of the fifth metatarsal. Avulsion fractures of the tuberosity (zone 1) typically follow inversion sprains, whereas a true Jones fracture occurs more distally at the metaphyseal-diaphyseal junction and carries higher risk of delayed union, a distinction that hinges on accurately locating the tuberosity relative to the proximal shaft. Small details matter. The fixed lateral perspective also supports teaching the apophysis in adolescents, where Iselin disease (traction apophysitis) can mimic an acute fracture on plain radiographs. Use this illustration in podiatry and orthopaedic foot and ankle modules to anchor surface anatomy, tendon insertion sites, and fracture classification at the fifth metatarsal base, and in radiology or emergency medicine teaching to correlate exam findings after ankle inversion with expected injury location. It also suits medical publishing layouts discussing lateral column pain, peroneal tendon mechanics, and operative planning for fixation near the proximal fifth metatarsal. Anatomical accuracy verified by SciePro's Medical Advisory Board.