Ausgewählte Aspekte zur Instabilität des Schultereckgelenkes

Acute injuries of the acromioclavicular joint (AC joint) are frequently observed and are a part our daily practise. An adequate knowledge and understanding of functional anatomy is necessary for successful treatment of AC joint injuries. Type 1 and 2 injuries (according to Rockwood) should be treated conservatively. Grade 4 and higher should be treated surgically. For type 3 instability according to Rockwood, no clear recommendations for an operative or conservative method can be given on the basis of the currently available literature. For the surgical treatment of high-grade instabilities, the hook plate is commonly used as an open procedure and, increasingly, also mini-open or arthroscopic-assisted flexible button-systems are used. In this article, selected aspects for treating the instability of the AC joint are discussed.