Peroneus Longus (Fibularis Longus)

Origin Upper two-thirds of lateral surface of fibula Insertion Lateral side of medial cuneiform, base of first metatarsal Actions Plantar flexes, everts foot Nerve Superficial peroneal nerve (L4, L5, S1) Note

Triceps Surae

OriginInsertionActionsNerveNote The triceps surae is a muscle located at the calf. It is composed by the two-headed Gastrocnemius and the Soleus.  These muscles both insert into the calcaneus and form the major part of the muscle of the posterior leg, commonly known...

Flexor Digitorum Longus – Foot

Origin Medial part of posterior surface of tibia. Insertion Bases of distal phalanges of second, third, fourth, and fifth toes. Actions Flexes distal phalanges of lateral four toes, assists in plantar flexing foot, inverts foot. Nerve Tibial nerve (L5, S1). Note

Articularis Genu

OriginThe inferior part of the anterior face of femur.InsertionOn the supra-patellar part of the synovial membrane of the knee.ActionsIt elevates the capsule and the synovial membrane of the knee joint and prevents them from being pinched during extension of the...

Extensor Digitorum Longus – Foot

Origin Upper two-thirds of anterior surface of fibula, interosseous membrane, lateral condyle of tibia. Insertion Along dorsal surface of proximal phalanges of four lateral toes, and then to bases of middle and distal phalanges. Actions Extends toes, dorsiflexes foot,...

Extensor Hallucis Longus

Origin Middle half of anterior surface of fibula and interosseous membrane. Insertion Base of distal phalanx of great toe. Actions Extends, hyperextends great toe, dorsiflexes and inverts (supinates) foot. Nerve Deep peroneal nerve (L4, L5, S1). Note