Patients with advanced facial palsy are those who have had facial palsy for more than 2 years with a definite diagnosis. In these patients, the facial muscles are no longer treatable by nerve repair due to prolonged paralysis. This is when the patient can consider replacing the paralyzed muscles on the affected side with other muscles that can pull the corners of the mouth, and this type of treatment is called powered facial palsy repair treatment. There are various methods of treatment for kinetic facial palsy, but regardless of the method, both the doctor and the patient are faced with the choice of balancing the cost to the patient with the results he will achieve! All treatments for kinetic repair must sacrifice one of the patient’s muscles with a specific function and transfer it to the corner of the affected side of the mouth, thus allowing it to produce a smile. Fortunately, the muscle chosen by the doctors is necessarily one that has minimal impact on the functional activity of the body and where the function lost after muscle excision can be compensated by other muscles. This being the case, how the desired muscle is obtained (i.e. the choice of the donor area, as clinically referred to, and the way in which the surgery is performed) is of great significance to the patient. This means how much scarring and trauma will be left on the patient’s body in order to obtain this muscle. The ideal option is to get the maximum benefit with the minimum cost! Unfortunately, this is difficult to achieve in actual clinical treatment. The balance between cost and effect sometimes has to be tilted to one side or the other. How to strike a better balance? Perhaps a modified temporalis flap procedure is an option. The temporalis muscle is a muscle located in the temporal region (covering the area commonly known as the “temple”) that contracts when the teeth are clenched. It is one of the many chewing muscles involved in the function of mastication, so sacrificing this muscle does not significantly affect the patient’s normal chewing function. Based on this factor, the temporalis flap has long been used in the treatment of patients with advanced facial palsy. The traditional method of temporal muscle flap transposition, which has the advantage of clear efficacy, has a number of significant disadvantages: there is scarring in the temporal region and the possibility of hair loss in the temporal region; in addition, the temporal region can appear sunken and pronounced due to the turning of the muscle; meanwhile, the zygomatic arch can appear bloated due to the spanning of the muscle. The modified temporal muscle flap surgery is an improvement to address the above deficiencies: the entire surgery is performed only through a hidden surgical incision in the nasolabial folds of the face (nasolabial folds incision, which is a surgical incision necessary for almost all facial palsy power repair surgeries) and there will no longer be temporal baldness, sunkenness and other defects mentioned above, in addition to the fact that the surgery is limited to the cheek area, so it will not cause more This is also more suitable for patients with normal eyebrow lift and eye closure function, avoiding the secondary damage that could be caused by previous surgery. This procedure has proven to be effective and can give patients a very natural smile with post-operative bite training. Of course, there are some temporary effects, such as a certain impact on the opening of the mouth in the early postoperative period and an overly pronounced pulling up of the affected corners of the mouth, which will be improved by functional rehabilitation within 2-3 months after surgery. Overall, this procedure allows the patient to obtain a definite surgical result at a small cost, finding a balance between the cost to the patient and the result he obtains!