i did my first cycle afew months after a shoulder operation. the surgeon told me that the pain i was feeling was due to scar tissue from the operation, and that over time it would become less rigid. so, i ran a deca /dbol course, as i knew that deca sends water to the joints, and in the 3 months i was on, i wouldnt feel the pain (which wasnt serious, and wasnt going to make my shoulder worse). by time i came off, the scar tissue had shifted, and my shoulder is 100%.
this surgery was aBambmioclavicular arthroscopic surgery, so had no bearing on tendons or ligaments. from what ive read, the rapid muscle growth associated with steroid use will put more stress on tendons.