The use of spinal-fusion surgery in the United States is rapidlyincreasing. National survey data indicate that the annual numberof spinal-fusion operations rose by 77 percent between 1996and 2001.1 In contrast, hip replacement and knee arthroplastyincreased by 13 to 14 percent during the same interval (Figure 1).Spinal-fusion surgery is expensive, with the average hospitalbill more than $34,000, excluding professional fees.1
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Figure 1. Annual Number of Knee-Arthroplasty, Hip-Replacement, and Spinal-Fusion Operations in the United States, on the Basis of the National Inpatient Sample.
Data are from the Agency for Healthcare Research and Quality.1
From the Departments of Medicine (R.A.D.) and Orthopedic Surgery (S.K.M.) and the Center for Cost and Outcomes Research (R.A.D., S.K.M.), University of Washington, Seattle; and the Department of Orthopedic Surgery, University of Gothenburg, Gothenburg, Sweden (A.N.).
Address reprint requests to Dr. Deyo at 146 N. Canal Street, Suite 300, Seattle, WA 98103.
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