On the Cover: A 47-year-old woman presented with a 4-year history of pain in her left hip that grew worse with activity. Radiographs and MRI led to a diagnosis of synovial chondromatosis, a rare condition where the joint becomes filled with multiple synovialized loose bodies. The patient underwent hip arthroscopy to remove the loose bodies. In this image, the femoral head is inferior and the inflamed ligamentum teres can be seen on the left. This was one of many loose bodies removed during the arthroscopy that were causing irritation and chondral damage within the hip. There were at least 40 loose bodies removed from the hip joint and at least 10 of these were over 1 cm in size. They were removed using a combination of grasping tools, probes, and an arthroscopic shaver. No cannulas were used because the loose bodies were routinely too large to pass through them. The sheer number of synovialized bodies was impressive to see inside a native hip. At last follow-up, the patient was doing well and had returned to low impact activities. See accompanying video at www.arthroscopyjournal.org. Courtesy of David A. McCall, M.D., and Carlos Guanche, M.D.
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