Symptom Relief After Joint Surgery Hints at Distinct ‘Types’ of Fibromyalgia, Study Says

Symptom Relief After Joint Surgery Hints at Distinct ‘Types’ of Fibromyalgia, Study Says
After knee or hip replacement surgery, fibromyalgia symptoms ease markedly in some patients but not in all, suggesting important patient-to-patient differences in how those symptoms develop, a recent study says. The findings were published in the journal Rheumatology in the paper, "Top down or bottom up? An observational investigation of improvement in fibromyalgia symptoms following hip and knee replacement." Osteoarthritis (OA) is the most common form of arthritis; it occurs when the cartilage that cushions the bones at a joint wears away, so bones grind against each other. When this occurs in the hips or knees, replacement surgeries can restore functionality and reduce pain over time. It's widely agreed that many people with OA also experience symptoms of fibromyalgia, including pain and fatigue. In this study, researchers wondered how these fibromyalgia symptoms would change — or not — following joint replacement surgery. They recruited 150 individuals with OA who were undergoing either hip or knee replacement and who had a score of four or higher on the 2011 Fibromyalgia Survey Criteria, which measures both widespread pain and symptom severity in fibromyalgia. These people were followed over time, during which the researchers classified them into one of two groups: 102 were in the "Improve" group, and the remaining 48 into the "Worsen/Same" group. As the names suggest, patients in the
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