OMG, my Mom had both knees done (one at a time) in her 70s/80s, and I saw one on medical TV once that caused me to nearly lose my lunch. I ran to change the channel! I’m squeamish watching that cutting-sawing stuff, I admit it. Brrrrrrrr.
I was awake long enuf to see the knife make a 14 inch cut on my knee...then like minutes later blood appeared, then the flesh was pulled back and BOOM...lights out ...eyelid theater