Anatomy of the Leg

by James Pickering, PhD

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    In this lecture, we’re going to look at the leg. So we’ll start off by looking at the leg in cross-section and returning to the deep fascia and the various intermuscular septae. We’ll then look at the various muscles within each of the three compartments. So we’ll look at the muscles in the anterior compartments, and their function and innervation. We’ll then look at the muscles in the lateral compartment, their function and innervation. And then finally, we’ll look at the muscles within the posterior compartment and detail their function and innervation as well. First of all, let’s return to a familiar view which is of a cross-section of the lower limb, and this time, we have got a section through the leg. We have the anterior surface here, and we have the lateral surface here, and the medial surface and the posterior surface. Remember, we’re looking at this from the inferior view. So within the subcutaneous tissue, we find the great saphenous vein and the small saphenous vein. Remember those from the previous lectures. And then we can see we’ve got our two bones within the leg. We have the tibia which is positioned more medially, and actually, we can see here, it runs very superficial. The sharp anterior aspect of the tibia can be palpated through the skin. Then we have the fibula, a much smaller bone that is more important with providing surface area for muscle attachments. So what we can see with this transverse section is that we have three compartments, and these three compartments are formed by the interosseous membrane which we can see running between the tibia and the fibula. And then we have the anterior intermuscular septum we can see here. And we’ve got a posterior intermuscular septum which we can see here....

    About the Lecture

    The lecture Anatomy of the Leg by James Pickering, PhD is from the course Lower Limb Anatomy. It contains the following chapters:

    • The Leg
    • Anterior compartment
    • Lateral compartment
    • Posterior compartment
    • Superficial layer of posterior compartment

    Included Quiz Questions

    1. Is attached to tendocalcaneus
    2. Is the most superficial muscle in the leg
    3. Has the tibial vessels and nerves lying between it and gastrocnemius
    4. Is an extensor at the knee joint
    1. Tibial nerve
    2. Popliteal nerve
    3. Peroneal nerve
    4. Common peroneal nerve
    1. Deep fibular nerve
    2. Tibial nerve
    3. Common fibular nerve
    4. Superficial fibular nerve

    Author of lecture Anatomy of the Leg

     James Pickering, PhD

    James Pickering, PhD

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