A number of reasons: The typical incision sites for knee arthroscopy lies over a number of structures that can be the source of pain after arthroscopy. 1) the skin itself, 2) superficial nerves crossing the incision that were cut, 3) the meniscus underlying the incision, 4) the cartilage that is directly deep to the incision. Any of these can be the source of pain.
Answered 11/28/2019
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