Knee surgery shows no benefit for mild osteoarthritis
A new study indicates that there is no apparent benefit to arthroscopic knee surgery for age-related tears of the meniscus in comparison with nonsurgical or sham treatments.
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Kim Barnhardt. CMAJ via EurekAlert! August 2014
The study, published in Canadian Medical Association Journal, CMAJ provides evidence that middle-aged or older patients with mild or no osteoarthritis of the knee may not benefit from the procedure.
As people age, the meniscus in the knee thins and becomes less flexible and more susceptible to tearing. When the meniscus tears, it can cause pain and mechanical symptoms. Arthroscopic knee surgery (meniscal débridement) is one of the most common orthopedic surgical procedures, with more than 4 million performed each year around the world.
This surgical technique is commonly used to address degenerative meniscus tears. The procedure involves making small (keyhole-type) incisions to remove the torn fragments from the damaged meniscus. Although the surgery is minimally invasive, there may still be complications; these risks must be weighed against benefits to the patient.
Two previous studies showed that for patients with severe knee arthritis, arthroscopic knee surgery is not effective for long-term symptom relief.
determine whether arthroscopic knee surgery for degenerative meniscal tears would provide relief to patients with mild or no osteoarthritis, researchers analyzed seven randomized controlled trials. The sample total was 811 knees in 805 patients with a mean age of 56 years. In four trials, there was no short-term pain relief in the first six months after surgery for patients with some osteoarthritis, nor was there improvement in long-term function up to two years later in five trials.
“Arthroscopic surgery for degenerative meniscal tears in the setting of mild or no concurrent osteoarthritis in middle-aged patients may have little, if any, effect on short-term (< 6 mo) and long-term (< 2 yr) outcomes in comparison with nonoperative management,” writes Dr. Moin Khan, Division of Orthopedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, with coauthors.
Physicians need to carefully weigh the costs and benefits when deciding which middle aged patients should undergo surgery. “With limited evidence supporting arthroscopic meniscal débridement for degenerative meniscus tears in the setting of mild or no concomitant osteoarthritis, an initial trial of nonoperative interventions should play a large role for middle-aged people.”
Source CMAJ via EurekAlert! AAAS
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