The application of this study is enormous. Many manual therapy professions employ joint mobilization techniques, either Grade IV and/or Grade V.
The two most common causes of a hypomobile joint dysfunction are tight muscles, especially smaller, deeper intrinsic muscles, and fibrous adhesions.
A joint functions to allow motion, so two forms of joint dysfunction exist: Hypomobile joint has restricted motion; Hypermobile joint has excessive motion.
Grades IV and V joint mobilization are essentially pin and stretch technique.
Bone “A” is pinned and then Bone “B” is moved relative to Bone “A.”