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Automobile Collisions / Workers' Compensation

414-272-3636 877-412-7409

Workers Comp SI Joint Dysfunction Pain

A painful SI joint dysfunction or sacroiliac joint is a common cause of workers compensation mechanical Low Back Pain. Sacroiliac (SI) joint dysfunction is a term that is used to describe the condition - because it is still unclear why this joint becomes painful and leads to low back pain. Sacroiliac joint dysfunction can become disabling if not attended to although it rarely leads to the need for surgery. Most people who suffer from this problem can reduce the pain and manage the problem with simple methods.

At the lower end of the spine, just below the lumbar spine lies the sacrum. The sacrum is a triangular shaped bone that is actually formed by the fusion of several vertebrae during development. The sacroiliac (SI) joint sits between the sacrum and the iliac bone (thus the name "sacroiliac" joint). You can see these joints from the outside as two small dimples on each side of the lower back at the belt line.

The SI joint is one of the larger joints in the body. The surface of the joint is wavy and fits together similar to the way legos fit together. Very little motion occurs in the SI joint. The motion that does occur is a combination of sliding, tilting and rotation. The most the joint moves in sliding is probably only a couple of millimeters, and may tilt and rotate two or three degrees.

The SI joint is held together by several large, very strong ligaments. The strongest ligaments are in the back of the joint outside of the pelvis. Because the pelvis is a ring, these ligaments work somewhat like the hoops that hold a barrel together. If these ligaments are torn, the pelvis can become unstable. This sometimes happens when a fracture of the pelvis occurs and the ligaments are damaged. Generally, these ligaments are so strong that they are not completely torn with the usual injury to the SI joint.

The SI joint hardly moves in adults. It seems that in physical jobs requiring repetitive lifting, bending, twisting and turning, poor body mechanics can contribute to SI joint problems. The older one gets, the more likely that the joint is completely ankylosed, a term that means the joint has become completely stiffened with no movement at all. It appears that the primary function of the joint is to be a shock absorber and to provide just enough motion and flexibility to lessen the stress on the pelvis and spine.

McCormick Law Office attorneys in Milwaukee, Wisconsin handle SI joint dysfunction workers' compensation claims.  The best results occur in when treating orthopedic physicians can explain the mechanism of injury to the job duties.

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