Lateral compartment of the leg

Last revised by Joshua Yap on 27 Dec 2022

The lateral compartment of the leg, also known as the peroneal compartment, is one of the four compartments in the leg between the knee and foot. Muscles within this compartment primarily produce ankle and foot eversion.

The leg is separated into anterior, lateral, superficial posterior, and deep posterior compartments by intermuscular septa and surrounded by the deep fascia of the leg.

Gross anatomy

Boundaries
  • anteriorly: anterior intermuscular septum

  • posteriorly: posterior intermuscular septum

  • medially: fibula (peroneal surface)

  • laterally: deep fascia of the leg

Contents
Muscles
Blood supply
Innervation

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Cases and figures

  • Figure 1: anterior and lateral leg muscles (Gray's illustration)
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  • Figure 2: lower leg axial section (Gray's illustration)
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