Wednesday, July 19, 2017

"Meniscus repair is only one commonly performed orthopedic surgery that has failed to produce better results than a sham surgery"

538:

a bizarre research technique called sham surgery. In these fake operations, patients are led to believe that they are having a real surgical procedure — they’re taken through all the regular pre- and post- surgical rituals, from fasting to anesthesia to incisions made in their skin to look like the genuine operation occurred — but the doctor does not actually perform the surgery. If the patient is awake during the “procedure,” the doctor mimics the sounds and sensations of the true surgery, and the patient may be shown a video of someone else’s procedure as if it were his own.

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Weirdly enough, surgery’s invasiveness may explain some of its potency. Studies have shown that invasive procedures produce a stronger placebo effect than non-invasive ones, said researcher Jonas Bloch Thorlund of the University of Southern Denmark. A pill can provoke a placebo effect, but an injection produces an even stronger one. Cutting into someone appears to be more powerful still.