• Timo Stübig, Torsten Jähnisch, Angela Reichelt, Christian Krettek, Musa Citak, and Rupert Meller.
• Trauma Department, Hannover Medical School, Germany.
• Int J Med Robot. 2013 Sep 1;9(3):359-64.

BackgroundAnatomical reconstruction of the coracoclavicular ligaments is a relatively new technique for acromioclavicular (AC) joint injuries.MethodsEighteen procedures (nine non-navigated, nine navigated) of anatomical reconstruction were performed minimally invasively, using the Tight Rope system, on cadaveric shoulders. Two Kirschner wires were placed, freehand under fluoroscopic control (non-navigated) or 3D C-arm navigated. The insertion point on the clavicle as well as the position of the K-wire in the coracoid were measured in the axial and coronal planes; points were assigned for different zones. For statistical analysis, the significance level was set to p = 0.05.ResultsThe accuracy of the entry point in the clavicle was significantly more accurate for the conoidal (p = 0.022) and trapezoidal ( p = 0.0062) drillings. The positioning in the coronal (p = 0.037) and axial (p = 0.0416) planes also showed higher accuracy for the navigated procedures.ConclusionThe accuracy of anatomical AC joint reconstruction can be improved using 3D C-arm flat detector navigation.Copyright © 2013 John Wiley & Sons, Ltd.

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