My OS has operated on me many times; not only my knee but my ankle and both wrists for carpal tunnel. My ankle is perfect, and my carpal tunnel is gone. He's never pushed or pulled my knee nor does he ever measure my ROM or hold me to some random number. He has me straighten and bend it myself as he eyeballs my ROM, and when he does handle my leg to examine it he has never caused any strain or pain.
He's been my OS for many, many years now (except for a short time frame when I switched doctors due to his extremely busy schedule where it was nearly impossible to get in to see him, but went back to him because I really need his expertise, and he seems to have lightened his schedule), I only see him-not his PAs or assistants, which I love. He is not only a dedicated doctor who cares a lot for his patients, he's well-loved and highly respected by all his colleagues and everyone else I run across when getting tests, while in the hospital, etc.
And, he puts up with me when I know I have to drive him bonkers at times. Now that's amazing! lol