That’s interesting to hear.
I had bruising in a couple of other places,but my surgeon said that it was “positional” bruising that usually shows up a little later. Its basically from either the staff handling you or from being in an awkward position for too long on the operating table.
I had a bruise show up on my leg after another surgery that was a handprint, which the surgeon admitted was from him resting his other hand there while working on me. That surgery lasted 18 hours, so I gave him a break.