Plastic Surgery includes the repair, reconstruction, or replacement of physical defects of form or function involving the skin, musculoskeletal system, cranio-maxillofacial structures, hand, extremities, breast and trunk, and external genitalia or cosmetic enhancement to these areas of the body. Cosmetic surgery is an essential component of plastic surgery. The plastic surgeon uses cosmetic surgical procedures both to improve overall appearance and to optimize the outcome of reconstructive procedures.