Rotations are apparantly like preparation to be eaten alive

My grandfather put the following entry in our family newsletter:

Katie finishes anesthesia rotations
Pat also writes that Katie Jackson should have ended her anesthesiology rotation on Friday. I am always amused to hear about Katie's rotations. I know this is a serious part of her medical training, during which she gets to experience most of the aspects of the practice of medicine on a first hand basis.

Unfortunately, whenever Katie's rotations come up for discussion, I picture my granddaughter hooked to a horizontal spit, being slowly broiled while a cannibal stands by and operates the crank.