Importance of Plastic Surgery Plastic surgery deals with the repair, reconstruction, or replacement of physical defects of form or function involving the skin, musculoskeletal system, hand, extremities, breast and trunk, external genitalia or cosmetic enhancement of these areas of the body. The best plastic surgeon uses cosmetic surgical principles both to improve overall appearance and to optimize the outcome of reconstructive procedures. In fact, the most popular procedures at this time entail the use of inject able substances, such as Arm Lift Surgery, Brow Lift Surgery, Cosmetic Ear Surgery, Eyelid Surgery etc.