Intervention Maps · Osteoarthritis · Arthroscopy
Is arthroscopy worth it?
Bottom line
For degenerative knee disease, including osteoarthritis and degenerative meniscal tears, arthroscopy offers little or no meaningful benefit over a placebo procedure for pain or function. Guidelines advise against using it as routine osteoarthritis care. That is not the same decision as joint replacement.
What this is
Arthroscopy is keyhole surgery to look inside the knee and trim or clean tissue. People are still offered it for osteoarthritis pain, especially when an MRI shows a meniscal tear.
It isn't joint replacement. Replacement is a later option for people who are already surgical candidates. Arthroscopy was tested against a placebo procedure and did not show a meaningful benefit for pain or function in degenerative knee disease.
What the evidence shows
A Cochrane review compared arthroscopy with placebo surgery. Pain was about 5 points better on a 0 to 100 scale. Function was essentially unchanged. The reviewers treated that as little or no meaningful benefit.
Guidelines tell services not to offer arthroscopy for osteoarthritis as routine care.
An MRI tear is not a free pass
Degenerative meniscal tears already sit inside this evidence. Seeing a tear on a scan, in someone who already has osteoarthritis, doesn't rewrite the placebo-surgery result.
A truly locked knee from a different problem is not this page.
What taking part usually involves
- A hospital or surgery-center procedure, with recovery time afterward.
- Cost, time off, and surgical risk even when the average benefit versus placebo surgery is not meaningful.
What this does not do
Arthroscopy hasn't been shown to repair osteoarthritis or stand in for replacement. A common offer is not the same as a treatment that beat a placebo procedure.
Evidence consulted Open sources
Key sources used to prepare this answer. This is not a citation for every sentence.
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