Findings published online in The Journal of Arthroplasty suggest that obesity may be independently associated with early primary total hip arthroplasty (THA) failure and early revision THA for aseptic loosening. 

Members of the research team retrospectively reviewed data on 684 consecutive failed THA cases referred to a single academic center for revision. They found no significant association between obesity and cause of THA failure. However, the overall rate of primary THA failure before 5 years was 48.8 percent in obese patients and 37.1 percent in non-obese patients, and the rate of primary THA failure for aseptic loosening before 5 years was 30 percent in obese patients and 18 percent in non-obese patients. The research team notes that obesity was not a risk for revision for infection, but American Society for Anesthesiologists class ≥3 was independently associated with increased odds of primary THA failure for infection. Learn more...

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