Knee bracing can greatly reduce pain of kneecap osteoarthritis
Washington: Wearing a knee brace offers significant relief to patients suffering from a type of osteoarthritis affecting the kneecap, according to a new study.
Current treatments are limited to pain relief and joint replacement.
Osteoarthritis of the knee affecting the kneecap (patellofemoral osteoarthritis) accounts for about 20 percent of patients with knee pain. They typically experience pain that is made worse by going up and down stairs, kneeling, squatting and prolonged sitting.
"There`s a pressing need for non-surgical interventions for knee osteoarthritis, and little attention has been paid to treatments particularly aimed at the kneecap (the patellofemoral joint), a major source of knee pain," explained Dr Michael Callaghan, research associate in rehabilitation science at the University of Manchester.
"We`ve shown that something as simple as a lightweight knee brace can dramatically improve the symptoms and function for people with this particular type of knee osteoarthritis."
The research team conducted a randomised controlled trial of a lightweight lycra flexible knee brace fitted around the knee with a support strap for the kneecap. One hundred and 26 patients between the ages of 40 and 70 were treated over a 12-week period. All had suffered from arthritic knee pain for the previous three months.
They were randomly allocated to either immediate brace treatment or delayed treatment (i.e. after six weeks.) Both groups of patients eventually wore the brace for a period of 12 weeks and averaged roughly seven hours a day.
After six weeks of brace wearing there were significant improvements between the brace wearing group and the no treatment group in scores for pain, symptoms, knee stiffness, muscle strength and function. After 12 weeks there were significant improvements in these scores for all patients compared to when they started.
"Patients repeatedly told us that wearing the brace made their knee feel more secure, stable, and supported," Dr Callaghan added. "Our theory is that these sensations gave the patient confidence to move the knee more normally and this helped in improving muscle strength, knee function and symptoms."
The study was recently presented at the Osteoarthritis Research Society International meeting in Philadelphia.
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