yep, even though u cant see so easily "centralisation" phenomena in Chronic PAtients...But i dont really think that McKenzie method works a lot because of "disc pathology"....If u estimate that over 30-40 per cent of spinal mechanical pain is from FACETS (there is an up-to-date study on that...) and in clinic we see the majority of patients to responding well in McKenzie priniciples, i firmly believe that u DONT moblise only a disc, even though that u will see both symptomatic-mechanical improvement and of course CENTRANISATION...It is much more than this