The symptoms of knee arthritis can be exacerbated by clinical depression, research has found.
Published in the Journal of Bone and Joint Surgery, the research found that patients with mild to moderate knee arthritis are especially affected by the mental health problem.
Tae Kyun Kim, study author and director of the Division of Knee Surgery and Sports Medicine at Seoul National University Bundang Hospital's Joint Reconstruction Center, said that patients with depression even reported significant pain when X-rays showed that their arthritis is not severe.
He added: "The relationship between pain and depression suggests that both should be considered by physicians when treating patients with knee osteoarthritis, particularly in those with X-rays not indicating severe damage to the joint."
Knee arthritis is typically a problem for men and women over 50 years of age.
It is also more likely to occur in people who are overweight and common symptoms include a pain or stiffness in or around the knee and a feeling of weakness or instability in the knees.
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Knee replacement surgery news : 25 March 2011