Left fibularis brevis

Identify fibularis brevis

The lateral-leg muscle beneath longus, ending on the outer side of the foot.

Brevis ends at the fifth metatarsal. Do not confuse it with tertius, which reaches the dorsal fifth metatarsal from the anterior compartment.

Sources: Lateral-leg anatomy tables

Around the outer ankle

From the lower lateral fibula, its tendon reaches the tuberosity at the base of the fifth metatarsal.

Both lateral tendons pass behind the lateral malleolus, held by fibular retinacula. These retaining bands are absent from the viewer; gaps between the surfaces are not an anatomical tunnel.

Sources: Lateral-leg anatomy tables · Anterior leg & foot lab manual

Eversion and plantar flexion

Longus and brevis evert the foot and assist plantar flexion. Tertius also contributes to eversion but assists dorsiflexion instead.

The model is static. Camera rotation does not move the joints, and these surfaces cannot predict strength, stability or an individual's range of motion.

Sources: Lateral-leg anatomy tables

Innervation

The superficial fibular (peroneal) nerve supplies longus and brevis; tertius receives the deep fibular nerve.

Neither nerve, its branches nor the supplying vessels are shown in this study.

Sources: Lateral-leg anatomy tables

Read the model

Explore left fibularis brevis in 3D

1. Follow the selected surface. Choose Oblique in isolation, then restore context to compare it with longus. Follow the distal surface toward the fifth metatarsal; return to Isolate if neighboring meshes hide it.
2. Compare its destination. Show context restores the 31 bones and 21 muscle parts of this side. The related bone link below opens a separate study; the attachment site itself is not a separate mesh.
3. Return to the lateral pair. The regional lower-leg view contains the tibia, fibula and thirteen muscle parts but no foot bones. Use the whole-leg context on this structure page to compare the distal route. Left lateral-leg guides →

Sources and editorial status

This guide uses independently written explanations with links to the evidence behind them. Source checking and specialist anatomical review are separate steps; the latter is still pending.

1. TTUHSC El Paso — Anterior & lateral leg and foot anatomy tables

   Longus and brevis attachments, actions, superficial fibular nerve supply and comparison with tertius. Introductory attachment summaries.

2. TTUHSC El Paso — Anterior leg & foot lab manual

   Lateral-compartment tendons behind the lateral malleolus and the role of fibular retinacula. The viewer is not a substitute for dissection.

3D geometry and its separate license are credited beneath the viewer. References do not imply endorsement of this site.