What are the neuro and musculoskeletal pathological processes that account for the symptoms?
66 year old male weakness left hand ongoing numbness and tingling and dropping items. H/o crushing injury left thumb 4 years ago. Occupation as a mechanic. Several years ago tripped over a tire fell backwards hit head on car fender. Didn’t seek help at time. X-ray neck mild to moderate degenerative disc disease c6-c7 with neuroforaminal narrowing and slight impingement of the exiting nerve root. What are the neuro and musculoskeletal pathological processes that account for the symptoms?