Some chiropractors are more like physical therapists, and know their anatomy/physiology/kinesiolgy, etc.
I haven't been in 20+ years, but did have some successful treatments in the 70s, 80s and 90s for
- a chronic right shoulder issue (too many subluxations/injuries)
- a badly hyper extended knee with a moderate tibial dislocation
- a chronic psoas tendon problem
- a badly dislocated finger
The "medical community" (regular MDs) recommended surgery for my shoulder and hyper extended knee.
I declined, and I'm glad I did.
The psoas tendon thing was a one time miracle treatment. It had been bothering me for several weeks, clicking, very painful on squats, etc.
A Chiroprator (a member of the gym I trained at, and occasional training partner) took me to a bench the locker room, and started "rolling" my entire hamstring to the inside. It was starting to get uncomfortable, and suddenly I hear and feel a moderate "pop" in my inner hip/groin area.......and son of a beach......the pain went away instantly. He said don't do any heavy leg work for a few days, and you're good to go.....he was right. It's almost like the muscle and/or tendon were not in the proper groove or something.
I had a mangled finger (basketball) that a chiropractor re-set, but any doctor or physical therapist could have done that I'm sure.
Unfortunately there is still too much pure quackery in the profession.