What is associated with the L5 myotome?

The association of great toe extension with the L5 myotome is rooted in the neurological control of muscle movements by specific spinal nerve roots. The L5 myotome primarily innervates the muscles responsible for extending the great toe, which is primarily through the extensor hallucis longus muscle, as well as contributing to dorsiflexion of the ankle via the tibialis anterior.

Understanding this link is crucial for diagnosing sensory or motor deficits associated with nerve root injuries or conditions like lumbar disc herniation. While knee flexion is more closely associated with the L5-S1 levels primarily involving the hamstring muscles, ankle plantarflexion is associated with S1-S2, and hip abduction is usually linked to L2-L3. Focusing on the L5 myotome clearly establishes great toe extension as the correct answer, emphasizing the specific muscle control originating from this particular level of the spinal cord.