The patient, female, 26 years old, fell and fractured her left humerus six years ago when she was working abroad, and underwent internal fixation with an incisional plate in a local hospital. Six months ago, he came to our hospital for treatment because his economic situation had improved. On examination: abnormal activity of the middle part of the left humerus, pseudarthrosis, mild pressure pain, and slightly limited movement of the left shoulder and elbow joint. There was no abnormal sensory movement of the left hand. The admission X-ray showed that the fracture of the lower and middle segments of the left humerus did not heal, the medullary cavity at both fracture ends was occluded, and a pseudarthrosis was formed. After admission to the hospital, the sclerotic bone of the left humeral fracture was resected under brachial plexus anesthesia and an autologous iliac bone graft was taken for internal fixation with a locking plate. After the operation, functional exercises of the joints of the left upper limb were performed. This is the postoperative radiograph: today is six months after the operation, the patient has joined the work (cashier), complained of no discomfort in the left upper arm, the left upper limb is strong, and the left upper limb joints are moving normally. The film review showed that after the internal fixation of the left humeral implant, the fracture gap was significantly smaller, and the fracture line was blurred, with obvious signs of healing. See the following figure.