Objective To investigate the effect of internal fixation with cannulated compression countersunk head screw for the treatment of Mason type Ⅱ and Ⅲ radial head fractures.Methods The 46 cases of Mason type Ⅱ andⅢ radial head fractures were treated by internal fixation with cannulated compression countersunk head screws.The fracture reduction conditions,fracture healing time,incidence of postoperative complications and elbow joint range of motion were recorded.The Broberg-Morrey scoring criterion was used to evaluate elbow joint function.Results All patients were followed up for 12～36 months.There were 35 cases of anatomical reduction of fractures and 11 cases of functional reduction.All fractures healed within 12～24 weeks.There were no postoperative complications such as fracture displacement,deep branch injury of the radial nerve,specific inflammation,joint instability,pain,and mal-union of fractures.At the last follow-up,the range of motion of the elbow joint was flexion with 120°～140°,hyperex-tension with 5°～10°;forearm pronation was 80°～90°,forearm supination was 80°～90°.Using the Broberg-Morrey scoring system to evaluate elbow joint function,29 cases were excellent,13 good,and 4 fair,with an excellent-good rate of 91.3％.Conclusions Cannulated compression countersunk head screw internal fixation for the treatment of Mason type Ⅱ and Ⅲ radial head fractures has the advantages of less trauma,high safety,stable fracture fixation,ear-ly recovery of elbow joint function,fewer complications,and no need for internal fixation removal.
cannulated compression countersunk head screwinternal fixationMason type Ⅱ and Ⅲ radial head frac-tures
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