What are the symptoms of L5 radiculopathy?
L5 root compression produces pain radiating to the posterolateral buttock, lateral posterior thigh, and lateral leg.
Sensory loss is most likely in a triangular wedge involving the great toe, second toe, and adjacent skin on the dorsum of the foot.
Weakness occurs in the muscles innervated by the L5 root (gluteus medius, tibialis anterior and posterior, peronei, and extensor hallucis longus).
This results in difficulty in ankle dorsiflexion, eversion, inversion, and hip abduction.
It is most easily identified by weakness in the extensor hallucis longus (extension of the big toe). The ankle reflex is usually normal.