Buyer beware. The quackery of traditional medicine……
“With 150,000 knee arthroscopies carried out in the United Kingdom each year, and about five times that number in the United States, arthroscopic partial meniscectomy…..surgery….to trim a torn meniscus—is one of the most common surgical procedures.”

“Considering the enormous volume, it is natural to think that there is compelling evidence for the procedure being beneficial. Remarkably, this is not so.”

“It is barely a decade since the publication of the first controlled trial addressing knee arthroscopy using placebo surgery as a comparator. Since then a series of rigorous trials, summarised in two recent systematic reviews and meta-analyses, provide compelling evidence that arthroscopic knee surgery offers little benefit for most patients with knee pain.”

T.L.N Järvinen, G.H.Guyatt
Arthroscopic surgery for knee pain: a highly questionable practice without supporting evidence of even moderate quality
British Journal Of Sports Medicine — Volume 50 #23 — December 2016

.

placebo surgery
https://www.youtube.com/watch?v=ONrF689BpQk