Mobilisation is similar to manipulation but without the involvement of any ‘cracking’ or ‘popping’ so it can be classified as a passive technique and one that precedes manipulation.
The spine or any joint can be mobliised using a rocking type repetitive motion which encourages the free flow of joints. It improves the local soft tissues as a secondary effect.
Mobilization produces an improved activation of the various mechanoreceptors at the joints. A mechanoreceptor is a sensory receptor that responds to mechanical pressure or distortion