A Case of Diffuse Pigmented Villonodular Synovitis of the Hip Joint

Pigmented villonodular synovitis, bursitis and tenosynovitis were classically described by Jaffe, Lichtentein and Sutro in 1941. Prior to this time, Simon(1865) reported the first case of xanthoma of the knee joint and since then the manifestations of this disease were known by various names, including villous arthritis, hemorrhagic vilious arthritis, giant cell tumor, xanthogranuloma, myeloplaxoma, and polymorphocellular tumor of the synovial membrane. The exact cause of this lesion is not yet known, but chronic stimulation followed by repeated hemorrhage in the joint is generally accepted as a criminal etiologic factor. Experimental production of this lesion in animal joints by Yong and Hudacek was started in 1954. We have experienced a rare case of pigmented villonodular synovitis which diffusely involved the hip joint.