試題詳解

21. A patient suffered from chronic low back pain with radiating to buttock, poster lateral thigh and lateral aspect of lower leg. Muscle weakness was observed in the extensor hallucis longus and tibialis anterior. Which lumbosacral root compression is the most likely？
(A) L2 root compression
(B) L3 root compression
(C) L4 root compression
(D) L5 root compression
(E) S1 root compression