J Korean Med Sci.  2013 Dec;28(12):1807-1813. 10.3346/jkms.2013.28.12.1807.

Knee Pain and Its Severity in Elderly Koreans: Prevalence, Risk Factors and Impact on Quality of Life

• Jhun HJ
• Sung NJ
• Kim SY

• KMID: 1779424
• DOI: http://doi.org/10.3346/jkms.2013.28.12.1807

Abstract

This study investigated the epidemiology (prevalence, risk factors, and impact on quality of life) of knee pain and its severity in elderly Koreans. The subjects (n=3,054) were participants aged > or =50 yr from the fifth Korea National Health and Nutrition Examination Survey, conducted in 2010. Knee pain was defined as pain in the knee lasting > or =30 days during the most recent 3 months; severity was categorized as mild, moderate, or severe. EQ-5D was used to measure quality of life. The prevalence of knee pain was 23.1% (11.7% in men, 31.9% in women). The prevalences of mild, moderate, and severe knee pain were 4.3%, 9.1%, and 9.7%, respectively (2.8%, 5.4%, and 3.5% in men and 5.4%, 12.0%, and 14.4% in women). Old age, female gender, a low level of education, a manual occupation, obesity, and radiographic osteoarthritis were risk factors for knee pain, and were associated with increased severity of knee pain. Excluding men with mild knee pain, people with knee pain had significantly lower quality of life than those without knee pain. Early interventional approaches are needed to reduce the medical, social, and economic burden of knee pain in elderly Koreans.

Keyword

Knee; Pain; Severity; Prevalence; Population

MeSH Terms

Age Factors
Aged
Asian Continental Ancestry Group
Female
Humans
Logistic Models
Male
Middle Aged
Obesity/complications
Odds Ratio
Osteoarthritis, Knee/complications/epidemiology/radiography
Pain/*epidemiology/etiology
Prevalence
*Quality of Life
Questionnaires
Republic of Korea
Risk Factors
Severity of Illness Index
Sex Factors

Figure

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  Fig. 1 Flow chart of inclusion of subjects. KNHANES V, the fifth Korea National Health and Nutrition Examination Survey.

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  Fig. 2 Prevalence of knee pain according to age and gender of participants aged ≥ 50 yr in the fifth Korea National Health and Nutrition Examination Survey, conducted in 2010. Knee pain was defined as the presence of pain in the knee joint lasting 30 or more days during the most recent 3 months.

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  Fig. 3 Prevalence of severity of knee pain according to gender of participants aged ≥ 50 yr in the fifth Korea National Health and Nutrition Examination Survey, conducted in 2010. 'Mild knee pain' was defined as 1-3 points, 'moderate' as 4 6 points, and 'severe' as 7-10 points on a 10-point pain severity scale.

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