Just to be clear, by 80% you mean it was a partial thickness repair (not full thickness)? Did they use anchors to pull and anchor any part of the tendon to the bone? From what I understand 3 months is an amazingly short time to be back doing anything after RC repair, so that’s pretty amazing.I had shoulder surgery last year. Back surfing in 3 months. Rotator cuff repair with 80% detachment. Almost to full strength now. Keeps improving. I have to express my gratitude to a great orthopedic surgeon who specializes in shoulders. I am 58. Shoulder pain started 10 years ago or more. I have had 5 or 6 shots in it to keep the pain away but all the while the bone spurs caused damage.