Leg

Tibialis Posterior

Tibialis Posterior The structure indicated is the tibialis posterior muscle of the leg. The muscles of the leg consist of the three compartments: Anterior Posterior Lateral The muscles in the posterior compartment of the leg are separated into a superficial group and a deep group. The superficial group consists of the following leg muscles: Gastrocnemius Plantaris Soleus The deep group consists of the following leg muscles: Popliteus Flexor hallucis longus Flexor digitorum longus Tibialis posterior Generally speaking, the muscles of the posterior compartment serve to plantarflex at the ankle joint, invert the foot and flex the toes. The posterior leg …

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tibialis posterior

Popliteus

Popliteus The structure indicated is the popliteus muscle of the leg. The muscles of the leg consist of the three compartments: Anterior Posterior Lateral The muscles in the posterior compartment of the leg are separated into a superficial group and a deep group. The superficial group consists of the following leg muscles: Gastrocnemius Plantaris Soleus The deep group consists of the following leg muscles: Popliteus Flexor hallucis longus Flexor digitorum longus Tibialis posterior Generally speaking, the muscles of the posterior compartment serve to plantarflex at the ankle joint, invert the foot and flex the toes. The posterior leg muscles are …

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popliteus

Fibularis Brevis

Fibularis Brevis The structure indicated is the fibularis (peroneus) brevis muscle. The fibularis brevis muscle is one of the muscles of the lateral compartment of the leg. The leg consists of three muscular compartments: anterior, posterior and lateral. The lateral compartment consists of two muscles: Fibularis (peroneus) longus Fibularis (peroneus) brevis The lateral muscles are responsible for eversion of the foot and are innervated by the superficial fibular (peroneal) nerve, which is a branch of the common fibular nerve. The common fibular nerve is a branch of the sciatic nerve and divides into the superficial fibular nerve and the deep …

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fibularis brevis

Extensor Hallucis Longus

Extensor Hallucis Longus The structure indicated is the extensor hallucis longus muscle. The extensor hallucis longus is one of the four muscles of the anterior compartment of the leg. The muscles of the leg consist of three compartments: Anterior Posterior Lateral In the anterior compartment are the four following muscles: Tibialis anterior Extensor hallucis longus Extensor digitorum longus Fibularis tertius The muscles of the anterior compartment of the leg serve to dorsiflex the ankle joint, extend the toes and invert the foot, and they are supplied by the deep fibular (peroneal) nerve. Origin: Middle half of medial fibula and interosseous …

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extensor hallucis longus

Posterior Inferior Tibiofibular Ligament

Posterior Inferior Tibiofibular Ligament The structure indicated is the posterior inferior tibiofibular ligament. The distal ends of the tibia and the fibula are held together by the inferior portion of the interosseous membrane. The interosseous membrane is the membrane which joins the tibia to the fibula along its entire length, separating the leg into anterior and posterior compartments. There are two apertures within the interosseous membrane proximally and distally which allow vessels to pass from one compartment to the other. In addition to the attachment of the interosseous membrane inferiorly between the distal tibia and fibula, this inferior articulation is …

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posterior inferior tibiofibular ligament

Extensor Digitorum Longus

Extensor Digitorum Longus The structure indicated is the extensor digitorum longus muscle. The extensor digitorum longus is one of the four muscles of the anterior compartment of the leg. The muscles of the leg consist of three compartments: Anterior Posterior Lateral In the anterior compartment are the four following muscles: Tibialis anterior Extensor hallucis longus Extensor digitorum longus Fibularis tertius The muscles of the anterior compartment of the leg serve to dorsiflex the ankle joint, extend the toes and invert the foot, and they are supplied by the deep fibular (peroneal) nerve. Origin: Proximal ½ of medial surface of fibula. …

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extensor digitorum longus

Superior Extensor Retinaculum

Superior Extensor Retinaculum The structure indicated is the superior extensor retinaculum of the leg. Retinacula (retinaculum singular) are bands of connective tissue which surround tendons and hold them in place. They function to stabilise tendons as the muscles to which they attach contract to cause movement. There are retinacula in the wrist, ankle and knee. In the ankle, there is the flexor retinaculum, the peroneal retinacula and on the extensor surface, there is the superior and inferior extensor retinacula. The superior retinaculum is situated distally in the leg just above the ankle joint, attaching to the anterior aspects of the …

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superior extensor retinaculum

Calcaneal (Achilles) Tendon

Calcaneal (Achilles) Tendon The structure indicated is the calcaneal tendon (Achilles’ tendon). The calcaneal tendon is formed from the convergence of the three muscles of the superficial compartment of the posterior leg to form a tendon that inserts onto the calcaneus. The posterior compartment of the leg consists of a superficial group of muscles and a deep group of muscles. The superficial group consists of the following leg muscles: Gastrocnemius Plantaris Soleus The deep group consists of the following leg muscles: Popliteus Flexor hallucis longus Flexor digitorum longus Tibialis posterior The calcaneal tendon is the thickest tendon in the human …

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calcaneal (achilles) tendon

Soleus Muscle

Soleus Muscle The structure indicated is the soleus muscle of the leg. The soleus is a muscle of the posterior compartment of the leg.The muscles in the posterior compartment of the leg are separated into a superficial group and a deep group. The superficial group consists of the following leg muscles: Gastrocnemius Plantaris Soleus The deep group consists of the following leg muscles: Popliteus Flexor hallucis longus Flexor digitorum longus Tibialis posterior The soleus muscle lies deep to the gastrocnemius and is large and flat in shape running the length of the leg from the knee to the heel, closely …

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Soleus Muscle

Inferior Extensor Retinaculum

Inferior Extensor Retinaculum The structure indicated is the inferior extensor retinaculum. Retinacula (retinaculum singular) are bands of connective tissue which surround tendons and hold them in place. They function to stabilise tendons as the muscles to which they attach contract to cause movement. There are retinacula in the wrist, ankle and knee. In the ankle, there is the flexor retinaculum, the peroneal retinacula and on the extensor surface, there is the superior and inferior extensor retinacula. The superior retinaculum is situated distally in the leg just above the ankle joint, attaching to the anterior aspects of the fibula and tibia. …

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Inferior extensor retinaculum