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Skin from the thigh is cut away using a specialized scalpel, then is fed through a machine the punches holes in it to make it more elastic, it can then be used as a skin graft. The advantages are there is little to no chance of rejection, But the disadvantages are that if the donor site isn't cleaned and taken care of properly there is a high rate of infection.
Posterior auricular cartilage can be used for rhinoplasties.
The fibula can be used for mandibular reconstruction.
Breast reconstruction is often done with myocutaneous flaps using rectus abdominis or latissimus dorsi muscles. Flaps over the anterior neck can be done using pectoralis major. Latissimus dorsi can also be used for posterior neck or scalp coverage. Free flaps from the forearm are often used for face/neck reconstruction. Myocutaneous flaps can be placed almost anywhere really, as long as appropriate vasculature exists to rotate a pedicled flap around, or attach a free flap to.
Split thickness skin grafts can be harvested from any place with a large area of relatively flat skin and can be placed anywhere that needs coverage. The most common donor site is the thigh, since there is lots of skin there, and it is typically a covered area--so the scars are not easily visible. Full thickness skin grafts are needed when covering certain areas like the palms of the hands or soles of the feet where the skin needs to be thick. Common places to take them are from the groin creases, lower back/upper buttocks, or lower abdomen--places where removal of some skin won't be missed.
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