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Last updated: Wed, Jun 28, 2017
Studies have shown that almost half of those aged 50 or older have knee pain at least once in a year. Between 25 and 29% of those in a similar age range have had pain on most days of a month in the past year.1
Severe knee pain is correlated with radiographic signs of osteoarthritis (OA). However, a study found that only 15% of those who reported knee pain had radiographic evidence of OA.2
Knee OA is more common among the elderly, among females than males, and among the obese. It is more common among those of lower “social class” and lower educational level.3
People with knee pain are more likely to suffer from fatigue, depression, and anxiety. Subjects in one study who reported that their work was hectic were 50% more likely to experience knee symptoms. Those who reported that their work was stressful, that they had little control over their job, and who were dissatisfied with support from their colleagues were twice as likely to experience new knee pain.4
A U.K. study found that 20% of men and 24% of women experience foot pain in a month.5