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Abstract #3184

Assessment of Length Variations of the Coracoclavicular Ligaments During Arm Movement from MRI Data

Matthias Honal1, Marco Vicari2, Elisabeth Weitzel3, Kaywan Izadpanah3

1Department of Radiology, Medical Physics, University Medical Center Freiburg, Freiburg, Germany; 2Esaote S. p. A., Genova, Italy; 3Department of Orthopeadic & Trauma Surgery, University Medical Center Freiburg, Freiburg, Germany

The precise analysis of the coracoclavicular ligaments during arm movement may be important for the treatment of acromioclavicular joint disruption. In this study a semi-automatic method based on the registration of MRI images is introduced which allows for the accurate assessment of length variations of the coracoclavicular ligaments for different arm abductions. Points in the ligament insertion regions are manually defined for one arm abduction only and automatically propagated to the other arm abductions with high accuracy. Thus the distance variations between points as a function of the arm abduction can be reliably obtained.