SA Journal of Radiology
versão On-line ISSN 1027-202X
OBERHOLZER, Pieter J.. Humeral avulsion of the glenohumeral ligament: The J sign. S. Afr. J. radiol. (Online) [online]. 2014, vol.18, n.2, pp. 1-2. ISSN 1027-202X. http://dx.doi.org/10.4102/sajr.v18i2.709.
The lesion resulting from humeral avulsion of the glenohumeral ligament (HAGL) is an important cause of anterior glenohumeral instability and can be seen in isolation or combination with an antero-inferior labral complex lesion. A conclusive magnetic resonance imaging diagnosis is aided when either a joint effusion is present or a contrast arthrography of the shoulder is performed.It is important to be familiar with the J sign as it represents contrast leaking through the defect in the lateral attachment of the joint capsule.