I had a partial bicep tendon tear, and rotator cuff tendon tear. Tried a couple runs of Ostarine, didn't help. About 16 months ago the bicep tendon completely detached. Had both the bicep tendon and shoulder surgically repaired. The best thing that could have happened to me was the bicep tendon tear, it forced me to get both fixed. Currently my bicep and shoulder are better than they've been in 20 years.