I tore my distal biceps tendon. in 2001 (the bottom part of the bicep) It was a 100% tear my bicep rolled up to the shoulder. Injuries to the biceps tendon at the elbow usually occur when the elbow is forced straight against resistance. I was deadlifting.
Rupture of the biceps tendon at the elbow is unusual. It occurs in only one to two people per 100,000 each year. ( Like my luck ?) LOL I had to have it surgical repaired. They cut me in the front of the bicep & behind just above the elbow. I was in a cast for 8 weeks and after a year of rehab The best I could turn my wrist was in the handshake poision couldn't turn it palms up ( if someone hands me change I have to take it in my right hand. Still like that to this day
Wish you the best!