Peroneus brevis muscle

The peroneus brevis, also known as the fibularis brevis, is a muscle in the lateral compartment of the leg. It lies deep/medial to the adjacent peroneus longus, and is a shorter and smaller muscle. Both brevis and longus travel course together along the lateral aspect of the ankle within a shared synovial sheath 4. Together the tendons wrap around the lateral malleolus, specifically within the retromalleolar groove of the distal fibula.

At the level of the retromalleolar groove, the peroneus brevis tendon is located more medial and variably anterior to the larger peroneus longus tendon. This can be remembered using the memory aid: "brevis closest to bone" (closer to the fibula, and anterior to the peroneus longus tendon).


Anatomy: Lower limb

Anatomy: Lower limb

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Article information

rID: 44429
Section: Anatomy
Synonyms or Alternate Spellings:
  • Peroneus brevis
  • Fibularis brevis
  • Fibulas brevis muscle

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Cases and figures

  • Figure 1: Gray's anatomy illustration
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