What is the “Popping” Noise Sometimes Heard During an Adjustment?
The “popping” or “cracking” noise is simply the release of gas, specifically nitrogen, from a joint when bones move, much like when you “pop” the cork out of a bottle of champagne or when you remove a suction cup from a window, thus relieving pressure in the joint of the spine addressed during the adjustment. Although this popping noise is common in and adjustment, it may not always be present, and it does not have to be present for the adjustment to be successful.
