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Anterior posterior compartments of leg skin#

The quadriceps femoris consists of four individual muscles - the three vastus muscles and the rectus femoris. Fig 1 - The muscles of the anterior thigh.

Innervation: The psoas major is innervated by anterior rami of L1-3, while the iliacus is innervated by the femoral nerve.

Actions: Flexion of the the thigh at the hip joint.

They insert together onto the lesser trochanter of the femur.

Attachments: The psoas major originates from the lumbar vertebrae, and the iliacus originates from the iliac fossa of the pelvis.

Unlike many of the anterior thigh muscles, the iliopsoas does not perform extension of the leg at the knee joint. These muscles arise in the pelvis and pass under the inguinal ligament into the anterior compartment of the thigh – where they form a common tendon. The iliopsoas is comprised of two separate muscles the psoas major and iliacus. In this article, we shall look at the anatomy of the muscles of the anterior thigh - their actions, attachments and clinical correlations. They are collectively innervated by the femoral nerve (L2-L4), and recieve arterial supply from the femoral artery. The muscles of the anterior compartment of the thigh are a group of muscles that (mostly) act to extend the lower limb at the knee joint.

Actions: Extension of the knee joint and flexion of the hip joint (it is the only muscle of the quadriceps group to cross both the hip and knee joints).

It attaches to the patella via the quadriceps femoris tendon.

Attachments: Originates from the anterior inferior iliac spine and the ilium of the pelvis.

Proximal attachment: Originates from the intertrochanteric line and medial lip of the linea aspera of the femur.

Proximal attachment: Originates from the anterior and lateral surfaces of the femoral shaft.It has a secondary function of stabilising the patella. Proximal attachment: Originates from the greater trochanter and the lateral lip of linea aspera of the femur.The patella, in turn, is attached to the tibial tuberosity by the patella ligament. The four muscles collectively insert onto the patella via the quadriceps tendon. It forms the main bulk of the anterior thigh, and is one of the most powerful muscles in the body. arthroplasty, high tibial osteotomy, lateral meniscal repair, posterior cruciate ligament reconstruction) 4,5.The quadriceps femoris consists of four individual muscles – the three vastus muscles and the rectus femoris. Recognition of high-origin and aberrant anterior tibial arteries is important to reduce the risk of inadvertent vascular injury, during knee surgery (e.g. high-origin anterior tibial artery that courses between the posterior tibial cortex and popliteus.origin above proximal to the popliteus muscle belly.high-origin/high-division anterior tibial artery 4.anterior lateral malleolar artery: anastomoses with the perforating branch of the peroneal artery.anterior medial malleolar artery: anastomoses with the medial malleolar branch of the posterior tibial artery.

Anterior posterior compartments of leg skin#

perforating branches: pass behind extensor digitorum longus, piercing the deep fascia and supplying the skin of the anterior leg.While still in the posterior compartment of the leg, the anterior tibial artery gives off the: Subsequently, it passes through a gap above the interosseous membrane into the anterior compartment of the leg. anterior tibial recurrent artery: arises immediately, passes upward in the tibialis anterior muscle to anastomose with lateral genicular branches (of the popliteal artery) at the knee The popliteal artery usually divides at the distal border of the popliteus muscle into the tibioperoneal trunk and anterior tibial artery.The anterior tibial artery passes in front of the ankle joint and continues as the dorsalis pedis artery onto the dorsum of the foot lateral to the tendon of the extensor hallucis longus and medial to the extensor digitorum longus and deep peroneal nerve. Here it lies on the interosseous membrane, lateral to tibialis anterior muscle. Subsequently, it passes through a gap above the interosseous membrane into the anterior compartment of the leg.

While still in the posterior compartment of the leg, the anterior tibial artery gives off the: The popliteal artery usually divides at the distal border of the popliteus muscle into the tibioperoneal trunk and anterior tibial artery. The anterior tibial artery arises from the popliteal artery in the popliteal fossa and continues distally as the dorsalis pedis artery.