Patient: Li Moumou, male, 30 years old, complained of “deformity, pain, and dysfunction of the right upper limb caused by a car accident for 12 hours” Diagnosis: 1, left brachial plexus injury; 2, left humerus fracture Zhou Zhenyu, Department of Orthopedic and Traumatic Surgery, Jinan General Hospital, Jinan Military Region, Treatment: left humerus cut and reset with plate fixation + brachial plexus exploration and repair under general anesthesia Nerve repair: C3 transposition repair of the distal part of C5; use of C7 to bridge the proximal end of C5 with the distal part of C6; C4 combined with the phrenic nerve repair of C8, T1 Brachial plexus diagram Probing cuts The total brachial plexus was seen to be torn off in the operation After repair of brachial plexus