Zusammenfassung
Das Auftreten von Rotatorenmanschettenrupturen wird verschiedenen extrinsischen und intrinsischen Faktoren zugeschrieben. Einer der wichtigsten extrinsischen Faktoren ist die Akromionmorphologie, die die Grundlage der Theorie des mechanischen Outlet-Impingements und der sukzessiven Entstehung von Rotatorenmanschettenrupturen darstellt. Die Beurteilung der Akromionmorphologie in Nativröntgenaufnahmen wird anhand verschiedener Parameter objektivierbar. Die häufigsten Parameter werden vorgestellt und eine Übersicht über mögliche Korrelationen mit dem Auftreten von Rotatorenmanschettenrupturen gegeben. Der Akromiontyp nach Bigliani, zu beurteilen anhand einer lateralen Y-Aufnahme, ist die am meisten angewendete Klassifikation, die jedoch oft eine geringe Reproduzierbarkeit zeigt. Bisher weniger bekannte Parameter wie der Akromionindex und der laterale Akromionwinkel zeigen dagegen eine höhere Reproduzierbarkeit und eine klare Assoziation mit dem Auftreten von Rotatorenmanschettenrupturen. Allen Parametern ist die gegebene Variabilität der Aufnahmen durch die Aufnahmetechnik und Skapulaposition gemeinsam.
Abstract
The incidence of rotator cuff tears is attributed to a number of extrinsic and intrinsic factors. One of the most important extrinsic factors is acromial morphology on which the theory of mechanical outlet impingement and successive tearing of the rotator cuff is based. Acromial morphology can be assessed on X-rays using several parameters. The most common parameters will be discussed and an overview of their association with the incidence of rotator cuff tears will be given. The acromion type according to Bigliani is the most commonly used classification; however the reproducibility has been questioned. More seldomly used parameters, such as the acromion index and the lateral acromion angle, show higher reproducibility and a clearer association with the incidence of rotator cuff tears. The variability due to imaging technique and scapula position for all parameters has to be kept in mind.
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Liem, D., Schmidt, C., Vogler, T. et al. Einfluss der Akromionmorphologie auf Rotatorenmanschettenrupturen. Obere Extremität 8, 41–45 (2013). https://doi.org/10.1007/s11678-012-0186-9
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DOI: https://doi.org/10.1007/s11678-012-0186-9