Jim Kelly, I assume you are speaking of a torn tendon or tendons of the of the bicep. I have experienced a complete separation in my left bicep and one of the two tendons and the right bicep. Since the complete tear in the left I can do curls in the gym but at a lighter weight and I cannot do anything with right arm as it knots up. That is what years in the gym do for you. I'm 80 years old and very active still work out in the gym but avoid bicep curls and things of that nature. The tendon can be reattached if it has not been too long, I think. So so if it has just happened and you want to have it reattached you better do something ASAP. Good luck