The lateral crural compartment, also called the peroneal compartment, is made up of two muscles whose tendons cross the ankle joint posterior to and under the lateral malleolus. This makes them flexors of the foot. These muscles are the:
|
![]() |
The superficial peroneal nerve branches from the common peroneal nerve near the neck of the fibula and passes between the peroneus longus and brevis muscles, at which point they supply the muscles. The superficial branch then continues onto the dorsum of the foot to supply the skin there. | ![]() |
Muscle | Origin | Insertion | Action | Nerve Supply |
peroneus longus | shaft of fibula | base of first metatarsal and the medial cuneiform |
plantar flexes (flexes) foot; everts foot at subtalar and transverse talar joints; supports lateral longitudinal arch and transverse arch of foot |
superficial peroneal nerve |
peroneus brevis | shaft of fibula | base of fifth metatarsal bone | plantar flexes (flexes) foot:everts foot at subtalar and transverse talar joints; holds up lateral longitudinal arch |
superficial peroneal nerve |
Anterior Leg & Dorsum of Foot![]() |
![]() |
Lower Limb Bones | Medial Thigh | Gluteal Region | Posterior Thigh | Anterior Leg and Dorsal Foot | Lateral Leg | Posterior Leg | Sole of the Foot | Ankle | Radiographs of the Lower Limb | Joints of the Lower Limb | Table of Muscles |
![]() |
This is copyrighted©1999 by Wesley Norman, PhD, DSc |