Local tissue damage caused by electrical burns is often deep and severe. After debridement, tendons, nerves, important blood vessels, bones, and joints are easily exposed, making the wound difficult to repair [
1]. In the past, these required multiple surgical treatments, which were of high risk and long duration; this could have a serious impact on the patient's shape and function [
2]. Deep electrical burns on the neck, shoulders and back are complicated by their complex anatomical structure which is adjacent to vital organs. The long exposure time of the wound predisposes it to serious complications such as major bleeding, making it more difficult to clinically repair the wound. The trapezius myocutaneous flap is a pedicled composite tissue flap consisting of skin and soft tissue on the surface of the shoulders, neck and trapezius. It can repair tissue defects on the neck, cheeks, skull, mouth, and even the skull base. The trapezius muscle is a flat muscle located on the back, near the head and neck. Beneath the trapezius muscle are the levator scapulae, the large rhomboid muscles and the scapula. The texture of the skin is similar to that of the head and neck. It is commonly used for the repair and reconstruction of various defects in the site [
3]. According to the function of the trapezius and direction of its muscle fibers, it can be divided into upper, middle, and lower parts [
4]. Multiple types of myocutaneous flaps can be designed from the trapezius, such as a lateral trapezius myocutaneous flap, upper trapezius myocutaneous flap, lower trapezius myocutaneous flap, and scapular skeletal myocutaneous flap. Clinical trials have been carried out based on a large number of anatomical studies, especially in the reconstruction of the back, head and neck defects, and in large-area defects after surgery and repair of bone defect. Meanwhile, there are also ongoing studies and applications of myocutaneous flaps, fasciocutaneous flaps, and skeletal myocutaneous flaps based on the trapezius muscle. We used lower trapezius myocutaneous flaps to repair the wounds of two patients with deep electrical burns on the shoulder, neck, and back. These have achieved satisfactory clinical results. According to our research, we found that the lower trapezius myocutaneous flap is convenient, feasible and effective in repairing neck, shoulder, and back defects.