Posterior dislocation of the elbow is an unusual event; however, it is the second most common major joint dislocation (after the shoulder) in adults, and it is the most common dislocation in children less than 10 years of age.30 Many of the dislocations that occur in children go unrecognized because of spontaneous reduction, with swollen, tender elbow as the only finding.31 MRI in such cases usually shows both an effusion and a contusion or strain of the brachialis muscle (Fig. 4.7). Bone contusions may be seen at the posterior margin of the capitellum and at the radial head and coronoid process.
We have found MRI to be very reliable in detecting rupture of the LUCL. This ligament usually tears proxi-mally at the lateral margin of the capitellum and is best evaluated on coronal and axial images.5,32 The LUCL may tear as an isolated finding on MRI in patients who have posterolateral rotatory instability in stage 1. Tears of the LUCL also may be detected in association with rupture of the MCL in stage 3B. Disruption of the LUCL is commonly seen in patients who have severe tennis elbow and tears of the common extensor tendon on MRI.
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Everything you wanted to know about. How To Cure Tennis Elbow. Are you an athlete who suffers from tennis elbow? Contrary to popular opinion, most people who suffer from tennis elbow do not even play tennis. They get this condition, which is a torn tendon in the elbow, from the strain of using the same motions with the arm, repeatedly. If you have tennis elbow, you understand how the pain can disrupt your day.