Why Is My Thumb Still Numb From A Trapped Nerve Even After Physiotherapy?

Hi, may I answer your health queries right now ? Please type your query here...I have had a trapped nerve in my neck for 8 weeks now originally it was sevier pain down my arm into my thumb and index finger now the it's more of a dull ache. I've been having weekly Physio my thumb is still constantly numb and when the Physio does the reflexes on my forearm there is no response, she says the nerve is still trapped as the numbness is still not intermittent, could the nerve become permently damaged and also I have in the last 2 weeks started with really bad tinnitus accompanied with sencetive hearing do you think this could be connected