What exactly is the diversified chiropractic manipulative adjustment, why is there a pop, and how does it work?
The diversified chiropractic adjustment is joint movement passing through the active range of motion, into the passive range of motion, reducing the tissue slack to the point of the palpatory limit of joint “end-play,” At that point, the skilled chiropractor delivers a high-velocity thrust toward and through the elastic barrier. Once past the elastic barrier, an instantaneous negative barometric pressure is achieved within the closed joint structure causing a dissolution of gasses in the fluids to form bubbles causing the audible “click” or cavitation. With this instantaneous loss of a relative vacuum, the “potential space” within the joint is then converted to an “actual space” allow greater movement and stretching of the articular soft tissues. The momentum of the high-velocity thrust may continue the joint separation past the point of cavitation, at which time the resiliency of the capsule again approximates the apposing articular beds and the joint is then allowed to seek its own j