A meta- analysis in the BMJ, shows arthroscopic surgery (partial meniscectomy, debridement, or both) for knee pain in middle-aged and older patients is not any better than placebo (exercise or sham surgery), but can actually cause harm in this population. Adverse effects included clots in the legs, clots in the lungs and death from surgical complications like infection.

The authors conclude, “Available evidence supports the reversal of a common medical practice.”