A 35-year-old mechanic complains of low back pain which started when he lifted a barrel of hay. The pain is better when he lies on his stomach with ice on his back. The pain radiates to the dorsum of the left foot. There is decreased sensation over the dorsum of the left foot and the Bechterew's test is positive.

What is the prognosis if this does not resolve?

A. Pain with leg extension

B. Loss of S1 reflex

C. Incontinence

D. Pain with foot inversion

E. Sudeck's atrophy

F. Pain with plantar flexion

G. Pain with dorsi-flexion

H. Cauda Equina syndrome

I. Atrophy of Extensor hallicus longus