The Muscles of the Leg

muscles of the leg

The soleus is a long, flat muscle located under the gastrocnemius and tibia. This muscle is similar to the shape of a flatfish and has three points of origin. Its tendinous arch spans the tibia and fibula. It has a popliteal artery that exits the popliteal fossa and enters the deep posterior compartment of the leg. Immediately afterwards, the artery divides into the posterior and anterior tibial arteries.

Anatomy

There are several kinds of muscle in the leg, and all of them are attached to the foot. They are subdivided into three compartments: anterior, middle, and posterior. They are also subdivided into extensors and flexors. They are responsible for the movements of the ankle and foot. Each compartment has its own muscles, which perform different functions. The muscles are grouped according to their innervation and function.

Function

All muscle groups in the leg are attached to the foot and can be divided into an anterior and posterior group. These groups are further subdivided into flexors and extensors. These muscles are responsible for flexion and dorsiflexion of the foot. They are also classified according to their innervation. The anterior leg muscles include the tibialis anterior, the extensor digitorum longus, and the hamstrings.

Clinical importance

The muscles of the leg are an important part of the human body. When they are injured, they may suffer from compartment syndrome. This condition occurs when the blood flow to a muscle compartment decreases, resulting in tissue damage. Although compartment syndrome can occur in many areas of the body, it is most common in the lower leg. It can be acute or chronic. Acute compartment syndrome is more severe than chronic compartment syndrome. It can be painful and lead to permanent muscle damage if left untreated.

Anterior compartment

The anterior compartment of the leg is a fascial compartment of the lower leg. It contains the muscles of dorsiflexion and vascular elements, including veins. It is also home to the deep fibular nerve, a branch of the common fibular nerve. The nerve is innervated by the sciatic nerve. This section of the leg is also the location of the tibia and fibula.

Extensor group muscles

The anterior tibial artery supplies the extensor group of muscles in the leg. It originates from the superficial femoral artery, a branch of the external iliac artery, and then divides into the anterior and posterior tibial arteries. They travel to the dorsal surface of the foot, where they are inserted in the lateral four toes.

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