Osteitis condensans illii (O.C.I.) is a radiographic finding characterized by a triangular area of sclerosis in the iliac portion of the sacroiliac joint. Current literature views the phenomenon as a stress-related sclerotic reaction in the peri-articular bone. It is possible that O.C.I. represents an advanced form of degenerative arthrosis of the fibrocartilage along the iliac portion of the sacroiliac joint. O.C.I. is not believed to be a pain-producing entity, but may be associated with sacroiliac syndrome. A case is presented illustrating the successful treatment by chiropractic manipulation.
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