Abstract
The glenoid labrum is a peripherally elevated part of the glenoid rim that consists mostly of fibrous tissue. It plays an important role in the stabilization of the glenohumeral joint. The normal anatomy of the glenoid labrum varies widely and it is difficult to distinguish between normal conditions and a pathological finding. Good knowledge of the anatomy of the glenoid labrum is essential to judge clinical, radiographic and arthroscopic findings. Use of magnetic resonance arthrography (Arthro-MRI) of the shoulder is the best method to evaluate pathologic conditions of the glenoid labrum. The status of the labrum in anteroinferior, posterior and multidirectional instability of the shoulder will be shown in this article by Arthro-MRI and arthroscopic views.
Zusammenfassung
Das Labrum glenoidale ist sowohl für die Funktion der Schulter als auch für ihre Stabilität von großer Bedeutung. Das Labrum glenoidale gehört zu den statischen Stabilisatoren der Schulter und trägt wesentlich dazu bei, das knöcherne Ungleichgewicht zwischen Humeruskopf und Gelenkpfanne auszugleichen. Um zwischen einem Normalbefund, einer anatomischen Variante und einem pathologischen Befund unterscheiden zu können, ist die Kenntnis der Anatomie des Labrum glenoidales grundlegend. Das periartikuläre Fasersystem, welches das Labrum glenoidale bildet, stabilisiert zum einen das Glenohumeralgelenk, zum anderen bildet es die Verbindung zwischen der Cavitas glenoidalis und der angrenzenden Kapsel, inklusive den glenohumeralen Bändern. Den Goldstandard in der Diagnostik von Verletzungen des Labrum glenoidale stellt die MRT-Untersuchung mit intraartikulärer Kontrastmittelgabe (Arthro-MRT) dar. Die unterschiedlichen Läsionen des Labrum glenoidalis bei anteroinferiorer, posteriorer und multidirektionaler Instabilität sowie bei SLAP-Läsionen werden anhand von Fallbeispielen mit Arthro-MRT Bildern und arthroskopischen Bildern veranschaulicht.
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Paul, J., Schöttle, P.B. & Imhoff, A.B. Die Pathologie des Labrum glenoidale. Obere Extremität 2, 143–149 (2007). https://doi.org/10.1007/s11678-007-0055-0
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DOI: https://doi.org/10.1007/s11678-007-0055-0