Hi another surgeon here. There are sooo many factors that have a bearing on scarring and wound healing that it often means you can't predict the outcome. I look after a precancerous condition called VIN that can lead to the same patient having the same type of procedure repeatedly over several years. Same patient same location on the body same surgeon same procedure but the behaviour of the wounds can differ wildly. You are right that different parts of the body are more prone to scarring than others. A big issue to try to avoid is tension across a wound which can be hard to do in certain areas where the skin is under stretch such as in front of the shin or over a joint.