Spinecare Topics

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Spine - Health and Disease
Spinal Dysfunction

Joint Dysfunction:

The condition referred to as joint dysfunction refers to abnormal joint movement or an abnormal response to loads placed upon it.  Joint dysfunction may be categorized by the pattern of abnormal movement.  A loss of joint movement can be referred to as a fixation.  The four general categories of fixations are:

Type I: muscular fixation which is characterized as a spasm or cramping of the muscle
    surrounding the joint restricting joint movement.

Type II: ligamentous fixation which is characterized by shortening of ligaments often
    associated with degeneration of the spinal segment.  This also leads to a
    reduction of joint movement

Class III: articular fixation refers to bony restriction of movement.  This is essentially the
    result of joint “gluingâ€? with multiple shortened ligaments in the presence of some
    degree of scar tissue or adhesions.  The thickened joint capsule also becomes
    less flexible and elastic leading to an articular fixation.

Class IV or the bony restriction is characterized by the presence of bone growths/spurs.
    They are typically obvious on an x-ray evaluation.  The calcium deposition within
    the soft tissues around the joint and soft tissue adjacent to the vertebrae can
    progress to the point of becoming a bony bridge across the joint restricting
    movement. 

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