Signs and Symptoms
A spinal segment refers to two vertebrae, the intervening intervertebral disc and the supportive structures. The phrase spinal segment dysfunction refers to abnormal movement of a spinal segment. This may manifest as a stiff (hypomobile) segment, a hypermobile segment or a egment which has lost its normal axis of rotation.
The most common cause for spine segment dysfunction is degenerative disc disease, scar tissue (fibrosis), muscle hypertonicity/spams and/or inflammation of one or more of the spinal facet joint complexes. A loss of normal spinal segment movement at one level may be associated with compensatory abnormal movement at adjacent spinal evels. The term spine segment dysfunction is not commonly used to describe spine instability, spinal fracture or spinal dislocation.