Os vesalianum pedis

Last revised by Bahman Rasuli on 30 Dec 2022

An os vesalianum pedis is an accessory ossicle of the foot. Although asymptomatic, it may become symptomatic occasionally, causing lateral foot pain and requiring surgical excision 2.

Gross anatomy

It is formed as a result of failed fusion of the secondary ossification center of the metatarsal. It is situated at the base of the fifth metatarsal in the peroneus brevis tendon 1.

Differential diagnosis

Cases and figures

  • Figure 1
  • Case 1
  • Case 2
  • Case 3

Imaging differential diagnosis

  • Avulsion fracture 5th metatarsal
  • Avulsion fracture of the 5th metatarsal styloid (Pseudo-Jones)
  • Base of 5th metatarsal stress fracture
  • Os peroneum
  • Fifth metatarsal apophysis
  • Iselin disease: traction apophysitis base of the 5th metatarsal
  • Fractures of the proximal 5th metatarsal
  • Apophysis of 5th metatarsal (illustration)
  • Os peroneum - diagram
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