Popliteal Region

by James Pickering, PhD

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    In this lecture, we’re going to look at the nerve lesions of the lower limb. So to do this, we’ll have a look at the overview of the nerve supply to the lower limb and look at some typical location of lesions.This will include the sciatic nerve, superior gluteal nerve, tibial nerve, and the common fibular nerve. So if we start with the sciatic nerve, then remember the sciatic nerve, formed from L4, L5, S1, S2, and S3, passes out of the pelvis via the greater sciatic foramen, which we can see here. Remember, it has its two parts. It has the common fibular and tibial divisions. We can also see that as it passes out, it passes from below piriformis, the infrapiriform fossa. So if you were to have compression of the sciatic nerve, then you’d have pain radiating from the buttock as it supplies the skin of the buttock here. You’d feel that pain coming from the buttock region. And this can be due to compression of the piriformis muscle onto the sciatic nerve. So, as the sciatic nerve passes out from below piriformis, piriformis can compress this nerve leading to pain coming from the buttock, and this is known as piriformis syndrome. If we have damage to the medial aspect of the buttock, then this puts the sciatic nerve, the inferior gluteal, and posterior cutaneus nerve of the thigh at risk. So a medially directed stab wound or intragluteal injection can put these nerves at risk - the sciatic nerve, the inferior gluteal, and the posterior cutaneus nerve of the thigh. This can lead to obvious problems with sensation via the coverage of the posterior cutaneus nerve. And also, damage to the sciatic nerve here leads to paralysis of the hamstrings, and you’d have impairments of thigh...

    About the Lecture

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

    • Nerve Lesions
    • Sciatic nerve
    • Superior gluteal nerve
    • Common fibular nerve
    • Tibial nerve injury

    Included Quiz Questions

    1. Has nerve roots L4-S2
    2. Wraps round the head of the fibula
    3. Wraps round the neck of the fibula
    4. Supplies the posterior thigh musculature
    1. Superficial pernoneal nerve
    2. Tibial nerve
    3. Common peroneal nerve
    4. Sciatic nerve

    Author of lecture Popliteal Region

     James Pickering, PhD

    James Pickering, PhD

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