McKenzie assessment also helps you rule out those that are out of the 3 syndromes. The various diagnosis that feature in the other category, for example - red flags, yellow flags, central canal stenosis, lateral foraminal stenosis, symptomatic spondy, mechanically inconclusive etc. It is now an all known fact that radiology and Wikipedia reference-linkMRI findings are not all conclusive. Hence I would say, an X-ray of a patient may show degenerative changes, but is the patient manifesting with the pain because of it ?

Mckenzie system also teaches you how to restore the patient back to their functions.

Asha