The reconstructive principle: like with like
Understanding this explains why one surgeon's plan differs from another's, and how to judge them.
Why the face is different. It is examined at conversational distance, in daylight, without covering, and it moves. A patch of skin that is slightly the wrong colour or thickness on a forearm is invisible; on a cheek it is the first thing anyone sees.
The reconstructive ladder, roughly in order. Let it heal by itself, which for some small defects in concave areas gives a surprisingly good result. Direct closure, if the laxity allows. A skin graft, full-thickness from a matching donor site such as in front of or behind the ear, which gives better colour and texture than a split-thickness graft. A local flap, moving adjacent skin with its own blood supply — the workhorse of facial reconstruction, because the skin next to a defect is the best match for it. A regional flap, such as a forehead flap for the nose. And a free flap, tissue brought from elsewhere in the body with its artery and vein joined under a microscope, for large or composite defects needing bone, bulk or lining.
Why higher is not better. A well-designed local flap usually beats a free flap aesthetically, because the tissue matches. Free flaps are used when nothing local can cover the defect or when bone and lining are needed, not as a display of technique.
Aesthetic units and lines. The face divides into units — the nose, the lip, the cheek, the eyelid — and scars placed at the borders between them, or within natural creases and hairlines, become inconspicuous. Sometimes the right answer is to remove and reconstruct a whole subunit rather than patch part of it, because a patch within a unit shows.
Composite defects. Where skin, lining and cartilage or bone are all missing — a through-and-through cheek or a nose — each layer must be replaced. Reconstructing skin over an absent lining fails.
Symmetry and the other side. The unaffected side is the template, and sometimes it is altered slightly to match.
Hair-bearing skin. Eyebrow, moustache, beard and scalp all need hair-bearing replacement, which limits the donor options.
What a good plan states. Which tissue is coming from where, why that rather than something simpler, how many stages, and what the scars will look like.
Ask: why this reconstruction rather than a simpler one, and what will the colour match be like?


