Is a Chiropractor's opinion on permanent injuries worth anything in a lawsuit?

Is a Chiropractor's opinion on permanent injuries worth anything in a lawsuit?

If a permanent injury is a result of a musculoskeletal or nervous system injury or if it has anything to do with the joints of the body (such as the knees, vertebra, hips, etc) then yes, a Chiropractor's expert opinion holds a lot of weight in a personal injury lawsuit.

If an injury involves the skin or the eyeballs or some other area of the body not mentioned above...then the experts in that field's opinion would carry more weight in a lawsuit.