Fibularis brevis (left) (Musculus fibularis brevis)
Educational content only — not medical advice.
Anatomy
Runs beneath the longus; its tendon shares the retromalleolar groove but inserts directly on the fifth metatarsal tuberosity — the lateral transverse arch’s principal guardian.
Origin & insertion
Lower two-thirds of the lateral fibular surface.
Action
Everts the foot and steadies the fifth metatarsal during push-off.
Innervation
Superficial peroneal nerve (L5–S1).
Clinical notes
The Jones fracture at the fifth metatarsal base separates its tendon from borderline supply; dislocation from its groove after ankle sprains shows a distinctive snap on exam.
Related structures
Educational references
FAQ
What is the role of the Fibularis brevis (left)?
Runs beneath the longus; its tendon shares the retromalleolar groove but inserts directly on the fifth metatarsal tuberosity — the lateral transverse arch’s principal guardian.
Why is the Fibularis brevis (left) clinically important?
The Jones fracture at the fifth metatarsal base separates its tendon from borderline supply; dislocation from its groove after ankle sprains shows a distinctive snap on exam.
Source & license
BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/). license details