Square face, commonly known as "big cheeks (bones)"; It is medically called mandibular angle hypertrophy or square face deformity. This kind of face is out of tune with the aesthetics of orientals. Especially women, oriental women advocate oval face or oval face. In addition to the aesthetic standard of "three stops and five eyes" and the golden ratio, the face should also have beautiful curves. The upper part of the face (that is, the width of the temporal bone or the distance between temples), the middle part of the face (the distance between the outer edges of the zygomatic arches on both sides) and the lower part of the face (that is, the distance between the outermost points of the two mandibles) should have a proper proportion and be coordinated with the length of the face. Maxillary angle hypertrophy is generally bilateral, and unilateral is not uncommon. It is often related to teenagers eating too many snacks and chewing gum (or betel nut) during their physical development, or it may be caused by grinding their teeth at night. All these make the levator palatini muscle group (masseter muscle, medial pterygoid muscle, etc. ) excessive exercise stimulates the development of muscles and bones in the mandibular angle area, and finally presents "square face deformity". Therefore, it can be considered that there are two reasons for mandibular angle hypertrophy: one is mandibular angle bony hypertrophy; Second, the masseter muscle is overdeveloped, with prominent cheeks on both sides. Specific to each patient, the influence of the two causes may be different, which may be skeletal or muscular, but from the clinical experience, they are often accompanied at the same time. Some patients are also caused by heredity, and their parents or relatives often have mandibular angle hypertrophy. Understand the etiology and pathogenesis of mandibular angle hypertrophy, and then talk about its treatment. With the development of high technology, human beings can walk into the earth in nature, and they can also "walk through the snow without trace" when treating their own diseases. The operation level of plastic and cosmetic surgeons is constantly improving. Originally, it was necessary to make an incision and leave a scar on the face and neck to treat the square face. In the craniofacial surgery of the Plastic Surgery Hospital of China Academy of Medical Sciences, it has long been possible to leave no scars on the patient's body surface. In addition, nearly 2000 such operations have been performed so far. Have nearly ten years of experience. At that time, returning professors returned from France, the birthplace of craniomaxillofacial surgery, not only brought advanced technology and sophisticated surgical instruments. But also bring back advanced medical concepts, with the highest goal of improving the quality of life of medical practitioners. He changed the need to cut the skin and muscles near the mandibular margin, leaving a 5 cm long scar; Moreover, it is easy to damage the mandibular marginal branch of facial nerve and cause facial paralysis. Instead, make an incision from the mucous membrane in the mouth, and truly "walk through the snow without a trace." Because the returned professors deeply know that for young people, a 5 cm long scar on their face and neck means that they will lose too much. Many patients who have undergone mandibular angle surgery with backward methods and have scars on their faces and necks come to our hospital. On the one hand, they are deeply amazed at the magic of technology, on the other hand, they regret that they failed to find a returned professor in the first operation. In the Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital of China Academy of Medical Sciences, anesthesia and nursing during and after operation are of high quality and well-trained. The operation was performed under general anesthesia. The patient woke up after a sleep and found that the operation had been completed. Many people have doubts about general anesthesia, fearing that it will do harm to the brain. In fact, the current general anesthesia technology is quite safe, and the harm to the human body is not even too much. In the United States and other western developed countries, most operations are performed under general anesthesia. In addition, patients do not have to worry about intraoperative discomfort, and postoperative pain can be completely avoided. The pain treatment experts in the Plastic Surgery Hospital of China Academy of Medical Sciences are equipped with advanced "micro-pump", which can give painkillers continuously and in small amount within 48 hours after operation, so that patients can recover in a happy state of mind. Patients usually need to stay in hospital for 12 days, and the total cost is about 16000 yuan. /kloc-it can work normally after 0/0. But the effect of surgery only shows 80-90% at this time. Why? First of all, the swelling of soft tissue has not completely subsided. Secondly. Masseter muscle hypertrophy 10 days ago was just removed. It often takes half a year for muscle fibers to "go in and out" (some muscle volume decreases). So, remember: although the effect is good in the short term after surgery, the best effect of surgery should be six months later! Don't be too hasty.