Patients with meniscal injuries should wear a hinge brace to protect the knee joint, as follows. After a meniscal injury, a hinge brace is needed to prevent the knee joint from inversion and valgus activities and from rotational activities, as these activities can aggravate the meniscal injury and are not conducive to meniscal recovery. In addition, the hinge brace can make the knee joint complete flexion and extension activities to avoid stiffness of the knee joint. The range of knee flexion and extension activities can be gradually increased by adjusting the angle to ensure the gradual healing of the meniscus injury, but also to restore the range of motion of the knee joint and avoid stiffness of the joint. Therefore, patients with meniscal injuries, especially after surgery, need to wear a hinge brace for immobilization to protect the knee joint and meniscus.