There is a clash between knowing that biomechanics and structure are not 100% responsible (ie. a 1-to-1 relationship) for pain, and the fact that (from an Example I got from Mike Eisenhart) some one with a poorly moving C5-C6, (as best we can tell the difference and as valid as our hands may be) has a risk factor for future neck pains and problems.
No. Not causative, but a risk factor.