I am an 18 year old baseball player and i have recently signed to play college baseball. I have recently been having numbness in my whole right arm, but also major weakness. I can usually throw around 85 mph but with the way i have been feeling lately there is no way i still can. Another thing is i have fractured spots in my back before 2 years ago.. I went to an orthopedic doctor and he seemed bumpuzzled when i explained my symptoms.. I cant hardly grip anything and my bicep is very weak! what could this be?