Ulnar radius rotational osteotomy is generally safe. Rotational osteotomy of the ulnar radius is indicated for patients with congenital fusion of the ulnar radius and forearm rotation of 60 degrees or more in front. The procedure is best performed in childhood, and improves the functional deficit of the affected limb, which is not able to rotate back. The surgery is performed by making a long incision from the ulnar humerus along the posterior margin of the ulna to the distal side to fully reveal the fused part of the ulna-radius, marking the ulnar lateral margin, transverse osteotomy at the proximal 1 cm of the ulnar-radius bifurcation, longitudinal distal traction after osteotomy, rotation of the forearm to the most appropriate functional position, and then cross fixation of the osteotomy broken end with a Gerber’s needle and completion of the hemostasis suture. Currently, rotational osteotomy of the ulnar radius is relatively safe, with fewer postoperative complications and a higher rate of correction of the deformity. After surgery, the tourniquet should be relaxed and the patient’s blood circulation should be observed. If the blood circulation is poor, the angle of rotation should be reduced to avoid ischemic contracture. Although the surgery is relatively safe, it is still recommended that patients undergo examination and treatment in regular hospitals to avoid postoperative complications.