50 years old male with numbness in the little finger and he has degenerative cervicitis with restriction in the neck movement, also there is numbness in the ring finger and atrophy of the thenar muscle

50 years old male with numbness in the little finger and he has degenerative cervicitis with restriction in the neck movement, also there is numbness in the ring finger and atrophy of the thenar muscle + compression in the elbow, what you'll do?
a) surgical decompression.
b) CAT scan for survical spine.