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Abstract Number: 1052

Female Reproductive Factors and Risk of Joint Replacement Arthroplasty of the Knee and Hip Due to Osteoarthritis in Postmenopausal Women: A Nationwide Cohort Study of 1.36 Million Women

Yeonghee Eun1, Jung Eun Yoo2, Kyungdo Han3, Dahye Kim3, Jaejoon Lee1, Dong-Yun Lee1, Dae-Hee Lee1, Dong Wook Shin1 and Hyungjin Kim1, 1Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea, 2Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Republic of Korea, 3Soongsil University, Seoul, Republic of Korea

Meeting: ACR Convergence 2021

Keywords: Epidemiology, Osteoarthritis, risk factors, sex hormones, Women's health

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Session Information

Date: Monday, November 8, 2021

Session Title: Epidemiology & Public Health Poster III: Other Rheumatic & Musculoskeletal Diseases (1022–1060)

Session Type: Poster Session C

Session Time: 8:30AM-10:30AM

Background/Purpose: Previous studies of the relationships between female reproductive factors and osteoarthritis (OA) have shown conflicting results. In this study, we aimed to explore the relationships between reproductive factors and joint replacement arthroplasty of the knee (TKRA) and hip (THRA) in a large nationwide population-based cohort of postmenopausal Korean women.

Methods: We included 1,218,257 subjects who participated in national health examinations in 2009 in the study. The study outcomes were incident THRA or TKRA due to severe hip or knee OA. The relationships between reproductive factors and THRA or TKRA were evaluated using a multivariate-adjusted proportional hazards model.

Results: During a mean follow-up duration of 8.2 years, 1,733 incident THRA cases and 65,108 incident TKRA cases were observed. Later age at menarche, longer breastfeeding, HRT and OC use were associated with increased risk of TKRA for severe knee OA, while later age at menopause and longer reproductive span were associated with decreased risk. With regard to THRA for severe hip OA, later menarche, longer breastfeeding, and HRT more than 5 years were associated with higher risk. The associations between reproductive factors and severe OA were more pronounced in underweight and younger subjects.

Conclusion: We found that shorter estrogen exposure was associated with higher risk of joint replacement therapy due to severe OA, and such associations were more pronounced in underweight and younger subjects.


Disclosures: Y. Eun, None; J. Yoo, None; K. Han, None; D. Kim, None; J. Lee, None; D. Lee, None; D. Lee, None; D. Shin, None; H. Kim, None.

To cite this abstract in AMA style:

Eun Y, Yoo J, Han K, Kim D, Lee J, Lee D, Lee D, Shin D, Kim H. Female Reproductive Factors and Risk of Joint Replacement Arthroplasty of the Knee and Hip Due to Osteoarthritis in Postmenopausal Women: A Nationwide Cohort Study of 1.36 Million Women [abstract]. Arthritis Rheumatol. 2021; 73 (suppl 9). https://acrabstracts.org/abstract/female-reproductive-factors-and-risk-of-joint-replacement-arthroplasty-of-the-knee-and-hip-due-to-osteoarthritis-in-postmenopausal-women-a-nationwide-cohort-study-of-1-36-million-women/. Accessed February 6, 2023.
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ACR Meeting Abstracts - https://acrabstracts.org/abstract/female-reproductive-factors-and-risk-of-joint-replacement-arthroplasty-of-the-knee-and-hip-due-to-osteoarthritis-in-postmenopausal-women-a-nationwide-cohort-study-of-1-36-million-women/

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