Knee buckling, often described as a knee 'giving way', is a symptom of knee instability that frequently affects older individuals. Symptoms of knee instability in older adults may indicate an increased risk of falling and of experiencing the various physical and psychological effects that can result from falling, revealed a study published in Arthritis Care & Research, a journal of the American College of Rheumatology (ACR).
The findings indicate that determining effective treatments for knee instability should be an important priority as clinicians care for aging patients.
‘Knee instability and knee buckling are important causes of fall in the older population suffering from knee pain. It may be possible to treat knee instability and prevent knee buckling with targeted exercises. Joint replacement surgery can also improve knee stability.’
AdvertisementKnee buckling particularly affects those with knee pain and knee osteoarthritis (OA), and may be caused by muscle weakness and balance difficulties. If knee instability leads to frequent falls and fall-related injuries, exercises and other interventions that stabilize the knee may help maintain older individuals' health and quality of life.
To investigate this potential link, Michael Nevitt, of the University of California, San Francisco, and his colleagues prospectively studied 1842 participants in the Multicenter Osteoarthritis Study (MOST) who were an average of 67 years old at the start and who had, or were at high risk for knee osteoarthritis.
At the end of 5 years, 16.8% reported knee buckling, and at the end of 7 years, 14.1% had recurrent falls. Bucklers at year five had a 1.6- to 2.5-times higher likelihood of recurrent falls, fear of falling, and poor balance confidence at year seven. Those who fell when a knee buckled at the start of the study had a 4.5-times, two-times, and three-times higher likelihood two years later of recurrent falls, significant fall injuries, and fall injuries that limited activity, respectively, and they were four-times more likely to have poor balance.
Dr. Nevitt said, "Falls, injury from falls and poor balance confidence are extremely common and debilitating problems in older people. The present study has demonstrated for the first time that knee instability and knee buckling are important causes of these problems in the very large segment of the older population suffering from knee pain. Fortunately, it may be possible to treat knee instability and prevent knee buckling with targeted exercises. Joint replacement surgery can also improve knee stability."
Dr. Nevitt further added, "Pain is the predominant symptom of knee osteoarthritis, and symptoms of instability such as knee buckling and falls may be overlooked by treating professionals. The most important immediate impact of these findings on patient care is that health professionals should query their patients with knee OA about instability, buckling, and falls, and work with them to take preventive actions, including proper use of walking aids, leg strengthening, and appropriate footwear."
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