What is a Chiropractic “Adjustment”? And Why Does It “Crack”?

Written by: Dr. Evan Steinke, B.Sc. DC,

Chiropractors often will use the term adjustment (aka manipulation) when discussing treatment options with their patients. While I often explain this to people new to chiropractic treatment, both new and old patients need to understand what this treatment is and how it is effective in the treatment of various conditions.

Firstly, an adjustment refers to a manual therapy technique in which the chiropractor applies a force to a patient’s joint. The force applied is quick but shallow and is referred to as a high-velocity low amplitude force. The application of this controlled but precise force is aimed at specific joints that the chiropractor has identified as problematic. For many joints this force will lead to a rapid movement and a “pop” or “crack” sound may be heard. While the sudden sound may seem alarming it is quite harmless and is not the sound of bone hitting bone.

So where does the sound come from?

In most joints, the two bones come in close approximation and are held in place by a fibrous capsule. This capsule contains cells that fill the cavity between the bones with synovial fluid, a viscous fluid that acts like a lubricant. When the chiropractor applies a quick force to either side of this joint it causes the fluid inside to drop in pressure and form little bubbles called cavitations. As these bubbles collapse, they result in the familiar-sounding “pop” or “crack” of a joint.

However, this sound is merely a side-effect of an adjustment as the therapeutic effect is found by how it changes the tissues surrounding the joint. In fact, continued research into chiropractic manipulation as a treatment for conditions such as neck pain and back pain is very supportive of its effectiveness. Therefore, chiropractors may use an adjustment as a form of treatment if they identify that a joint is or is contributing to the patient’s condition. These problems may include if the joint has restricted ranges of motion, is misaligned, is compressing a nearby nerve, or is contributing to the patient’s pain.

Ultimately, chiropractic adjustments are found to be both a safe and effective treatment technique for a wide range of injuries. By applying the appropriate force precisely to joints it can bring about relief, increase mobility, and improve overall well-being.

Experience the benefits of regular chiropractic adjustments by contacting Active Sports Therapy today. You can find Dr. Evan Steinke at our Westman Village location.