Even when the original reason for the sacroiliac stabilization is valid, often the human body overdoes it and tightens the musculature excessively and/or keeps it tight long after it needs to be, so the musculature becomes stuck in a chronic pattern of hypertonicity.
The treatment for a hypomobile sacroiliac joint (SIJ) joint is Grade IV joint mobilization (also known as arthrofascial stretching).
Assessment of sacroiliac joint dysfunction is done by motion palpation, in which the joint is challenged to move while the motion of the joint is assessed.
The low back is defined by the lumbar spine, composed of 5 vertebrae, named L1-L5. The pelvis is defined by the bones of the pelvic girdle.