Joao Paulo Oliveira Araujo MD, Presenter: Nothing to Disclose

Fernando Mesquita Lima, Abstract Co-Author: Nothing to Disclose

Douglas Leal, Abstract Co-Author: Nothing to Disclose

Hamilton Guidorizzi MD, Abstract Co-Author: Nothing to Disclose

Julio Brandao Guimaraes, Abstract Co-Author: Nothing to Disclose

Andre Yui Aihara MD, Abstract Co-Author: Nothing to Disclose

Carlos Henrique Longo MD, Abstract Co-Author: Nothing to Disclose

Objective .: The purpose of this presentation is to understand the biomechanics of the elbow joint and review the spectrum of imaging findings in instability. Technical overview The work will focus on evaluation of the elbow by magnetic resonance imaging.

Discussion: The instability of the elbow has been recognized as a spectrum ranging from a small lesion to frank dislocation. Between these two extremes, the more subtle instability is Posterolateral rotatory instability of elbow, which can cause functional impairment, but cant be detected accurately only by radiographic study. Lesions of fibrous capsule and ligaments of the elbow usually progress in rotational direction from lateral to medial. Consequently, the dislocation occurs in the final stage of instability of the elbow with the coronoid process being located behind of the humerus. We will demonstrate the key imaging features of elbow instability, particularly when evaluated by MRI. Conclusion: The knowledge of the various imaging findings of elbow instability may allow precise recognition of soft tissue injuries and bone structures, thereby assisting in patient treatment and surgical planning.

http://abstract.rsna.org/uploads/2014/14016858/14016858_n9py.pdf

Araujo, J, Lima, F, Leal, D, Guidorizzi, H, Guimaraes, J, Aihara, A, Longo, C, Instability of the Elbow: Spectrum of Imaging Findings.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14016858.html