Back story... I had torn my rotator cuff in 2014, had the usual surgery, consisting of Anchors etc. Shoulder never felt 100% fixed, but figured that's the nature of the beast... Im a pretty active mid 50 guy, who golfs once every couple weeks, and lifts weight 3 days a week (all machines, no bench).. and does Cardio the other 4 days... again... pretty active. Fast forward to about a month ago.. Shoulder was really starting to feel sore, not as bad as it did when i had my first surgery (then i couldnt lift hand over head, comb hair, pull up pants)... this time, I could lift hand over head etc.. just felt pain, and a lack of strength....so went in for another MRI. WELL...... small full thickness tear!!! ugh!! of the supraspinatus tendon about 14mm... Dreading the idea of Surgery and re-hab again!! I looked into PRP injections.. and there was/is so much conflicting reports as too what it will and wont do.. as far as healing tears... I felt it was worth a try.. I had my injection (about 7 total) on Monday the 6th.. will keep posting on this thread from time to time.. the results. Good or Bad. the initial shot wasn't as bad as I thought.. they take 10 tubes of blood spin them 2 sep. times to harvest the PRP, then injected my shoulder all around the injured area using ultrasound for guidance.. First couple injections were like a normal shot, then after that, the 3-7 must of hit the spot as I felt quite a bit of discomfort and you could feel the pain all along the spot where I was feeling the injury.. felt like a dentist hitting a nerve. the rest of day, shoulder was basically useless, completely tight and sore... day 2 was much better, could lift arm waist high, still quite a bit of discomfort/pain. And by day 3 could lift above head with a bit of pain. Today is day 5, I feel almost like I did before going in for injection... WEEK 2-4 will be the determining factor and I should start feeling some relief. If I do.. I will go for 2nd injection on week 6-7. If I get ZERO relief, ill chalk it up to a "it was worth a try" and explore surgical option. feel free to PM me if ya have any questions..