Thanks for your reply.
So far he has had no investigations for the neck, everything he has been referred for on NHS has focased on the arm and shoulder.
He has neuro symptoms into the hand so yes I think an Wikipedia reference-linkMRI for the neck is the way forward. I just can't believe that no-one so far has even thought to do this.
Could a nerve root compression or disc prolapse etc cause this level of muscle spasm into the biceps? And are we looking at C5-7?
Thanks