In both study populations, hip pain was not present in many patients with radiographic OA, and many with hip pain did not have imaging evidence of hip OA. Results of the Osteoarthritis Initiative were similar with nine percent and 24 percent, respectively. In the Framingham study, only 16 percent of patients with hip pain had radiographic hip OA, and only 21 percent of hips with radiographic OA had hip pain. Researchers looked at the Framingham Osteoarthritis and Osteoarthritis Initiative studies, with nearly 4,500 participants. The population of people over age 60 has more than doubled in the past 30 years, and the total cost of OA (both treatment and complications) amount to $185.5 billion annually and is expected to rise exponentially. More than 330,000 hip replacements are performed in the U.S. Hip osteoarthritis (OA) is a significant source of morbidity causing pain, difficulty walking, and disability. The study appears in the British Medical Journal. These findings are the first to evaluate the diagnostic performance of an x-ray in patients with clinical signs and symptoms of classic OA. Image courtesy of Alampaliam Venkatachalam on Flickr In the majority of cases, hip x-rays are not reliable for diagnosing hip osteoarthritis (OA), and can delay the treatment of this debilitating disease. Hip Osteoarthritis May Not Appear on X-ray
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