That's very interesting regarding the minutiae of undermining. Articles have been written describing undermining one side the whole length of wound vs. undermining half the length on both sides - very academic but useful I suppose.
That's brings up a few other questions in my mind. If you are underming, are you doing so subgaleal or above the galea above the occipital protuberance? Also I guess you are undermining above the galea b/c when you go laterally, the galea blends with the temporal fascia. So is there any time you would go subgaleal and score the galea and maybe be less tension on closure with the deep stitches placed into the galea - also possibly less chance of deep sutures catching the follicles? Does this make any sense? Also with suture closure of the skin, I have seen some using locking sutures - I don't remember who that was. Would it make more sense to use a horizontal mattress everting suture which may possibly be less asphyxiating to the follicles or does this not matter? Ideally if deep sutures approximated the wound like they should, you could put steri-strips for the skin - that's extreme of course.
My only experience with this is doing bicoronal flaps for frontal sinus obliteration for chronic frontal sinusitis and also flap closure of large scalp defects after skin cancer removal which I haven't done in a long time. I remember scoring the galea to release some tension - not sure if it helped a little or a lot.
Any observations appreciated Dr. Simmons.