Overweight/Obesity Up Incidence of Hand, Hip, Knee Osteoarthritis

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Being overweight or obese increases the incidence of osteoarthritis, especially in the knee.
Being overweight or obese increases the incidence of osteoarthritis, especially in the knee.

(HealthDay News) — The incidence of hand, hip, and knee osteoarthritis (OA) increases with overweight and obesity, particularly in the knee, according to a study published in Arthritis & Rheumatology.

Carlen Reyes, MD, PhD, from Universitat Autònoma de Barcelona in Spain, and colleagues conducted a population-based cohort study using primary care records for patients aged at least 40 years who were without a diagnosis of OA on January 1, 2006, and had BMI data available. A total of 1 764 061 patients were observed for a median follow-up of 4.45 years.

The researchers found that the incidence rates of knee, hip, and hand OA were 3.7, 1.7, and 2.6 per 1000 person-years, respectively, for patients in the normal-weight category, and 19.5, 3.8, and 4.0, respectively, for those with grade II obesity. Being overweight or obese vs normal weight increased the risk of OA at all 3 joint sites, especially at the knee. The risk of knee OA increased 2-, 3.1-, and 4.7-fold with a status of overweight, grade I obesity, and grade II obesity, respectively.

"Being overweight or obese increases the risk of hand, hip, and knee OA, with the greatest risk in the knee, and this occurs on a dose-response gradient of increasing BMI," the researchers wrote.

Disclosures: Several authors disclosed financial ties to the pharmaceutical industry.

Reference

  1. Reyes C, Leyland KM, Peat G, Cooper C, Arden NK, Prieto-Alhambra D. Association Between Overweight and Obesity and Risk of Clinically Diagnosed Knee, Hip, and Hand Osteoarthritis: A Population-Based Cohort Study. Arthritis Rheumatol. 2016;68(8):1869-1875. doi:10.1002/art.39707.
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