50 cases of C2 type fracture of the proximal humerus are presented. They were treated surgically by reduction and internal fixation with a locking plate (38 cases) or using a shoulder hemiarthroplasty (12 cases). The results were satisfactory at most of the patients concerning the residual pain (mean Constant-Murley pain score: 11,50/15), the strength (mean Constant-Murley strength score: 12,32/25) and the joint mobility of the shoulder (mean Constant-Murley mobility score: 22,20/40). The most important complications were rotator cuff disorders (12 cases), varus consolidation of fracture (7 cases), avascular necrosis of the humeral head (8 cases) and malunion of the tuberosities (4 cases). C2 proximal humerus fractures are injuries that evolve usually well, if the surgical indication is appropriate and the procedure is performed correctly.

50 cases of C2 type fracture of the proximal humerus are presented. They were treated surgically by reduction and internal fixation with a locking plate (38 cases) or using a shoulder hemiarthroplasty (12 cases). The results were satisfactory at most of the patients concerning the residual pain (mean Constant-Murley pain score: 11,50/15), the strength (mean Constant-Murley strength score: 12,32/25) and the joint mobility of the shoulder (mean Constant-Murley mobility score: 22,20/40). The most important complications were rotator cuff disorders (12 cases), varus consolidation of fracture (7 cases), avascular necrosis of the humeral head (8 cases) and malunion of the tuberosities (4 cases). C2 proximal humerus fractures are injuries that evolve usually well, if the surgical indication is appropriate and the procedure is performed correctly.