What is That Popping Noise?
When a chiropractor performs a spinal manipulation typically a popping noise is heard. This sound is believed to be caused by gas escaping from the joint. Every joint in the body is a fluid filled cavity surrounded by bones ligaments and tendons. Because there is a difference in pressure inside and outside the joint, when manipulated, gas is released and an audible noise can be heard. This phenomenon is similar to opening a can of soda. The pressure on the inside of the can is much greater than the outside, and when the seal is broken a popping sound is heard.
