About Joint Manipulation 

Joint manipulation is a type of passive movement of a skeletal joint, using high velocity low amplitude (HVLA) thrusting maneuvers. Joint Manipulation is synonymous with Grade V mobilization; a term commonly used by physiotherapists.

It is usually aimed at one or more 'target' synovial joints with the aim of achieving a therapeutic effect.

‘Pop’ or ‘Click’ sound

Joint manipulation is characteristically associated with the production of ‘pop’ or 'click' sound. This sound is believed to be the result of a phenomenon known as cavitation. When a joint manipulation is performed, the applied force separates the articular surfaces of the joint. This deforms the joint capsule and intra-articular tissues, which in turn creates a reduction in pressure within the joint cavity. In the low pressure environment, some of the gases that are dissolved in the synovial fluid, create a bubble or cavity. It rapidly collapses upon itself, resulting in a 'clicking' sound.

Effects of joint manipulation

The clinical effects of joint manipulation have been shown to include:

1. Relief of musculoskeletal pain
2. Unlocks joints, e.g. stiff neck/acute back sprains
3. Improves joint range of motion