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| Facts About Osteonecrosis |
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- Osteonecrosis is estimated to account for over 10% of the more than 500,000 total hip arthorplasties performed each year in the US. (1)
- Avascular necrosis has been estimated to develop in 10,000 to 20,000 new patients a year in the United States. (2)
- Core decompression as a treatment for AVN has resulted in a pooled clinical success rate of 47% for Ficat Stage III. (3)
- Use of a vascularized fibular graft for the treatment of Ficat Stage III or IV osteonecrosis of the femoral head resulted in a success rate of 67% after five years. (4)
- Resurfacing of only the femoral head for Ficat Stage III or IV resulted in a success rate of 82% at more than six years. (5)
- The revision rate for total hip arthroplasty as indicated for osteonecrosis in patients under age 50 is significantly higher (50%) than THA as indicated for osteoarthritis (19%). (6)
References:
- Mankin, H.J. “Nontraumatic Necrosis of Bone (Osteonecrosis), “New England Journal of Medicine. 1992, Vol. 326, p. 1473-1479
- Mont, Michael A. and Hungerford, David S., “Mon-Traumatic Avascular Necrosis of the Femoral Head,” Journal of Bone and Joint Surgery. March 1995, p. 459-474
- Mont, Michael A.; Carbone John J.; Fairbank, Adrian C., “Core Decompression Versus Nonoperative Management for Osteonecrosis of the Hip, “Clinical Orthopaedics and Related Research. March 1996, p. 169-178
- Urbaniak J.R., Coogan P.G.; Gunneson E.B.; Nunley J.A., Treatment of Osteonecrosis of the Femoral Head with Free Vascularized Fibular Grafting,”Journal of Bone and Joint Surgery. May 1995, p. 681-694
- Nelson, Carl; Walz, Brad; Gruenwald, J. Michael, “Resurfacing of Only the Femoral Head for Osteonecrosis, “Journal of Arthroplasty. October 1997, p. 736-740
- Ortiguera, Cedric J.; Pulliam, Ian T.; Cabanela, Miguel E., “Total Hip Arthroplasty for Osteonecrosis, “Journal of Arthroplasty.
January 1999
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