Examination Of L5 Nerve Root - Everything You Need To Know - Dr. Nabil Ebraheim
nabil ebraheim・4 minutes read
Sensory and motor examinations of the L5 nerve root help identify nerve root involvement by testing sensation and muscles supplied, with injuries potentially leading to symptoms like Trinderenberg gait, weakness in hip abduction, knee flexion, foot drop, and big toe extension, often due to disc herniation or spondylolisthesis.
Insights
- The sensory examination of the L5 nerve root involves testing different parts of the foot, such as the medial side, top, and lateral aspect, to pinpoint the specific nerve root affected.
- Injuries to the L5 nerve root can result in symptoms like Trinderenberg gait, weakness in hip abduction, knee flexion, foot drop, and big toe extension, commonly caused by conditions like disc herniation or spondylolisthesis impacting the nerve root.
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Recent questions
What does sensory examination of the L5 nerve root involve?
Testing sensation at different parts of the foot.
Which muscles are involved in the motor examination of the L5 nerve root?
Extensor digitorum longus, extensor hallucis longus, extensor digitorum brevis.
What symptoms can result from injuries to the L5 nerve root?
Trinderenberg gait, weakness in hip abduction, knee flexion, foot drop, big toe extension.
What are the functions of the extensor digitorum longus and extensor hallucis longus muscles?
Toe extension and back extension.
What are common causes of issues affecting the L5 nerve root?
Disc herniation, spondylolisthesis.
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Summary
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L5 Nerve Root Examination and Injuries
- Sensory examination of the L5 nerve root involves testing sensation at different parts of the foot: L4 for the medial side, L5 for the top, and S1 for the lateral aspect, aiding in identifying the nerve root involved.
- Motor examination of the L5 nerve root includes muscles supplied like extensor digitorum longus, extensor hallucis longus, and extensor digitorum brevis, with functions such as toe extension and back extension.
- Injuries to the L5 nerve root can lead to symptoms like Trinderenberg gait, weakness in hip abduction, knee flexion, foot drop, and big toe extension, often caused by disc herniation or spondylolisthesis affecting the nerve root.
