One big issue with orthopedic injuries is that doctors do not like chiropractors apparently and never refer someone to a chiropractor. For example, the Mayo Clinic's informational page on knee injuries does not even list chiropractors as a solution type for knee injuries. They list acupuncture, though. That kind of shows where the average American doctor considers chiropracty: below acupuncture as a therapy.
So, the problem is that an athlete with a knee injury has basically two completely alternative approaches: go to a doctor, who will tend towards surgical approaches, or to a chiropractor. The chiropractor has the advantage that the stuff they do is not irreversible in the way that surgery is. On the other hand, an athlete that monkeys around with a chiropractor for a year, may end up putting off surgery which it may turn out is the only solution.
So, the problem is: how do you referee this? Basically you want to know, is this an injury that can be solved with chiropracty or does it need surgery? And just asking a doctor (in the USA) will probably not work because a doctor will nearly always avoid recommending chiropracty from my experience. On the other hand, the chiropractors are not able to read MRIs and say, "this requires surgery" either because they are not doctors.
Is there any kind of neutral observer that can make the right recommendation for either approach?