Radial tuberosity fractures are one of the elbow injuries that occur easily in adults, accounting for about 17-19% of elbow fractures. According to Mason’s classification, Mason type I radial tuberosity fracture can achieve good therapeutic results with nonoperative treatment because the fracture is nondisplaced and more stable, while the treatment and efficacy of Mason type II and III radial tuberosity fractures are still controversial, and improperly treated deformities are often accompanied by varying degrees of forearm rotation dysfunction after healing. In unstable radial tuberosity fractures, it is difficult to maintain good position after repositioning by external fixation alone, and the traditional treatment is radial tuberosity resection, which has varying degrees of impact on forearm rotation and stability. This patient was a radial tuberosity fracture, a Mason II or III radial tuberosity fracture, and I treated many cases surgically after admission: internal fixation with miniature locking plate screws was used, with good follow-up results.