Fifth metatarsal (right) (Os metatarsale quintum)
Educational content only — not medical advice.
Anatomy
The metatarsal of the little toe in the right foot: a long shaft with a tarsal base behind and a phalangeal head in front. Its base carries the lateral tuberosity for the peroneus brevis tendon — the classic avulsion site after an ankle inversion sprain.
Clinical notes
The Jones fracture of its base after inversion sprain has a borderline blood supply and delays union; it must be distinguished from the superficial avulsion in management.
Related structures
Educational references
FAQ
What is the role of the Fifth metatarsal (right)?
The metatarsal of the little toe in the right foot: a long shaft with a tarsal base behind and a phalangeal head in front. Its base carries the lateral tuberosity for the peroneus brevis tendon — the classic avulsion site after an ankle inversion sprain.
Why is the Fifth metatarsal (right) clinically important?
The Jones fracture of its base after inversion sprain has a borderline blood supply and delays union; it must be distinguished from the superficial avulsion in management.
Source & license
Derived from Z-Anatomy (Gauthier Kervyn et al.), CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/); upstream geometry from BodyParts3D, © The Database Center for Life Science. license details