Operative treatment of coronoid process fractures associated with acromioclavicular dislocation
CHEN Hang
HU Xiao-chuan
YANG Guo-yong
XIANG Ming
Abstract：Objective To investigate the diagnosis and effectiveness of operative treatment of acromioclavicular dislocation associated with coronoid process fractures.Methods From May 2007 to May 2014, 12 cases ( 9 males, 3 females ) of acromioclavicular dislocation associated with coronoid process fractures underwent longitudinal exposure of the distal clavicle of the shoulder along Langer line, reduction, fixation of the acromioclavicular dislocation and coronoid process fractures, and acromioclavicular ligament repair. The average age was 33 years old ( range: 20-56 years ). All acromioclavicular dislocations were of Rockwood type III. Eyres type of coronoid process fractures: III B in 8 cases, IV B in 3 cases, V B in 1 case. All patients had injury history, coronoid process dislocation and fracture were conifrmed by preoperative X-ray iflms and CT scan.Results Ten out of 12 patients were followed up with the mean period of 12 months ( range: 9-15 months ). All incisions healed by the ifrst intention. Coronoid process fracture healing was achieved in all patients with good acromioclavicular joint reduction and shoulder joint functions. In the latest follow-up, the mean Constant score was 90.8 points ( range: 83-95 points ). The mean forward lfexion was 156°, while mean external rotation 45°. According to Herscovici evaluation criteria:excellent in 8 cases, good in 2 cases.Conclusions Missed diagnosis of coronoid process fractures may occur in the treatment of acromioclavicular dislocation associated with coronoid process fractures, which should be paid close attention. Longitudinal exposure of the distal clavicle of the shoulder along Langer line and reduction provide sufifcient view and convenience. By the double ifxation for acromioclavicular dislocation and coronoid process fractures, normal anatomical position can be restored, which is beneifcial for the recovery of affected limb functions and post-operative oppearance of the incision. It is an effective treatment method.
Keywords：Acromioclavicular jointDislocationsCoracoidFracturesboneFracture ifxationinternal
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 522-525 )