Which dermatome is associated with the anterior thigh?

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Multiple Choice

Which dermatome is associated with the anterior thigh?

Explanation:
Dermatomes map skin sensation to specific spinal nerve roots. For the anterior thigh, the sensory territory is primarily supplied by the L3 dermatome via the lumbar plexus (femoral nerve branches). The L2 distribution sits higher, toward the groin, while L4 covers the medial leg and part of the foot, and S1 covers the posterior-lateral leg and the sole. C6, being in the arm, does not relate to the thigh. Therefore the mid-anterior thigh region is best described by L3. It’s common to have some overlap with adjacent dermatomes (like L2), but L3 is the most characteristic for the anterior thigh.

Dermatomes map skin sensation to specific spinal nerve roots. For the anterior thigh, the sensory territory is primarily supplied by the L3 dermatome via the lumbar plexus (femoral nerve branches). The L2 distribution sits higher, toward the groin, while L4 covers the medial leg and part of the foot, and S1 covers the posterior-lateral leg and the sole. C6, being in the arm, does not relate to the thigh. Therefore the mid-anterior thigh region is best described by L3. It’s common to have some overlap with adjacent dermatomes (like L2), but L3 is the most characteristic for the anterior thigh.

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