I had a full bicep rupture on my left arm 13 months ago, mine also let go at the elbow and basically rolled up to my shoulder. I was taking a limb back over a house and throwing the chunks out into the yard, I threw a 3 inch or so branch out into the yard and felt a pop, then real sharp pain in my arm, I actually thought I broke it at first. Went to the hospital shortly thereafter, they recommended surgery so I didnt think much of it and had the surgery about a week later. Im pretty happy with the results, my range of motion is great, and the strength is almost back to normal. It does get sore if I work it too hard, but nothing really bad. I think my biggest problem has been being able trust it again, I find myself taking a lot smaller pieces if im catching and throwing stuff.