What makes the popping noise when an adjustment is delivered?
Misconceptions about the cracking noises that are heard when a chiropractic adjustment is delivered can often lead to nervousness about treatment. The noise is not the bones crashing into each other. The audible stems from a lubricant, called synovial fluid, which is made up of dissolved gases located in every joint. An adjustment releases the build up pressure and these gases, which were created by the joint’s restriction. The emission of these nitrogen gases produce the “popping” sound often heard when an adjustment is administered. Back to top.