ArticleCaspian journal of internal medicine2025
Association between osteoporosis and symptomatic knee osteoarthritis in postmenopausal women: A case-control study.
Article in Caspian journal of internal medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Postmenopausal women with symptomatic knee osteoarthritis (KOA) may be at increased risk of bone loss due to reduced physical activity. However, findings on the association between KOA and osteoporosis have been inconsistent. This study aimed to assess the relationship between symptomatic KOA and bone mineral density (BMD) in postmenopausal women. Methods: Postmenopausal women with symptomatic KOA were recruited from a rheumatology clinic. KOA was diagnosed according to the American College of Rheumatology (ACR) criteria. Age-matched postmenopausal women without clinical KOA served as controls. BMD at the femoral neck (FN) and lumbar spine (LS) was measured using dual-energy X-ray absorptiometry (DXA). Osteoporosis was defined as a T-score < -2.5 at either site. Statistical analyses included Student's t-test, chi-square test, and multiple regression analysis. Data were analyzed using SPSS software. Results: Seventy participants (35 KOA patients and 35 controls) with mean ages of 61.9±8.7 and 58.8±6.8 years, respectively (P = 0.67), were included. No significant differences in BMD were found between the groups. However, multiple regression analysis revealed that obesity was significantly associated with a reduced risk of osteoporosis (OR = 0.23; 95% CI: 0.058-0.945). Conclusion: This study found no significant association between symptomatic KOA and osteoporosis in postmenopausal women. Interestingly, obesity appeared to have a protective effect against osteoporosis. Further large-scale, long-term studies are needed to confirm these findings and explore underlying mechanisms.
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