Great. The Penguins are sending their franchise player to a quack for treatment of concussion symptoms. Ted Carrick, is a chiropractor (which should set off alarm bells right away) specializing in "chiropractic neurology." Guess what? There's no scientific evidence that it works.
Chiropractic neurology does not appear to be based on any body of research, or any accumulated scientific knowledge. I am not aware of any research that establishes their core claims. A search on PubMed for “Carrick T” yielded nothing, and searching on “chiropractic neurology” yielded mostly studies about neurological complications from chiropractic treatment.
Chiropractic neurology appears to me to be the very definition of pseudoscience – it has all the trappings of a legitimate profession, with a complex set of beliefs and practices, but there is no underlying scientific basis for any of it.
Give it all a read. The Penguins are putting the long term health of their star player in the hands of a doctor who's treatments have no factual scientific basis.