Functions of the Lumbar Spinal Nerves L2, L3, and L4 spinal nerves provide sensation to the front part of the thigh and inner side of the lower leg. These nerves also control movements of the hip and knee muscles.
Where is the L2 nerve roots Dermatome located?
T2 to L2 nerves supply the chest and abdomen….More videos on YouTube.
| Nerve Root | Dermatomes |
|---|---|
| Cervical | |
| L1 | Back, over trochanter and groin |
| L2 | Back, front of thigh to knee |
| L3 | Back, upper buttock, anterior thigh and knee, medial lower leg |
What does the L2 nerve affect?
L2-L3 Herniation: The L2 nerve root is responsible for the iliopsoas muscles. A disc herniation at this level may cause weakness in an iliopsoas muscle, which may cause difficulty while walking up the stairs and/or pain that radiates into the front of the thigh.
What are the symptoms of L2-L3 disc herniation?
Symptoms Of L2-L3 Disc Problem The primary symptom includes back pain. You may also experience pain, weakness, numbness, tingling, or burning sensations in front of your thigh. The second lumbar nerve originates from the L2-L3 interspace.
What is a dermatome and why are dermatomes clinically important?
Dermatomes: Dermatomes are areas of skin supplied by sensory neurons that arise from a spinal nerve ganglion. Dermatomes have clinical significance, especially in the diagnosis of certain diseases. Symptoms that follow a dermatome, such as pain or a rash, may indicate a pathology that involves the related nerve root.
What muscles are innervated by L2?
A limited description of the specific lumbar spinal nerves includes: L1 innervates the abdominal internal obliques via the ilioinguinal nerve; L2-4 innervates iliopsoas, a hip flexor, and other muscles via the femoral nerve; L2-4 innervates adductor longus, a hip adductor, and other muscles via the obturator nerve; L5 …
