Dorothy, I am a retired physical therapist, and I thnk that a therapy referral would be of benefit for you. The pain in your muscles is probably PN pain and can't be helped (except temporarily) by PT, but the stiffness you describe could certainly be alleviated. They should also be able to make up a home exercise program for you. When a nerve to a muscle dies, no amount of PT can make the muscle work, but a PT can help you strengthen and maintain the muscles that are working. They may be able to recommend some assistive devices if needed. Definitely, yes, go.