Archives of Orthopaedic and Trauma Surgery

, Volume 134, Issue 7, pp 913–918 | Cite as

Safety screw fixation technique in a case of coracoid base fracture with acromioclavicular dislocation and coracoid base cross-sectional size data from a computed axial tomography study

  • Yoshiteru Kawasaki
  • Tetsuya Hirano
  • Katsutoshi Miyatake
  • Koji Fujii
  • Yoshitsugu Takeda
Orthopaedic Surgery


Coracoid base fracture accompanied by acromioclavicular joint dislocation with intact coracoclavicular ligaments is a rare injury. Generally, an open reduction with screw fixation is the first treatment choice, as it protects the important structures around the coracoid process. This report presents a new technique of screw fixation for coracoid base fracture and provides anatomic information on cross-sectional size of the coracoid base obtained by computed tomography (CT). An axial image of the coracoid base was visualized over the neck of the scapula, and a guidewire was inserted into this circle under fluoroscopic guidance. The wire was inserted easily into the neck of scapula across the coracoid base fracture with imaging in only 1 plane. In addition, 25 measurements of the coracoid base were made in 25 subjects on axial CT images. Average length of the long and short axes at the thinnest part of the coracoid base was 13.9 ± 2.0 mm (range 10.6–17.0) and 10.5 ± 2.2 mm (6.6–15.1), respectively. This new screw fixation technique and measurement data on the coracoid base may be beneficial for safety screw fixation of coracoid base fracture.


Acromioclavicular joint dislocation Fracture of the coracoid base Screw fixation 


Conflict of interest

None of the authors have any conflicts of interest or disclosures in relation this report.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Yoshiteru Kawasaki
    • 1
  • Tetsuya Hirano
    • 1
  • Katsutoshi Miyatake
    • 1
  • Koji Fujii
    • 1
  • Yoshitsugu Takeda
    • 1
  1. 1.Department of OrthopedicsTokushima Red Cross HospitalKomatsushimaJapan

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