The above image reveals advanced osteoarthritis of the left hip joint with a large central osteophyte that almost completely bridges the acetabular notch and results in mild lateralization of the femoral head.
- Varich L, Pathria M, Resnick D, Hodler J, Bruser D, Bosch E, Trudell D, Tyson R. Patterns of central acetabular osteophytosis in osteoarthritis of the hip. Invest Radiol. 1993 Dec;28(12):1120-7.
- Mofidi A, Shields JS, and Stubbs AJ. Central acetabular osteophyte (saber tooth sign), one of the earliest signs of osteoarthritis of the hip joint. Eur J Orthop Surg & Traumatology. Published online, July 24, 2010.