Epidemiology
Etiology
Pathophysiology
The radial head is anchored to the ulna by the annular ligament, which encircles the proximal radius. In children age <5, this tissue is relatively thin compared to older children and adults. Sudden axial traction (eg, pulling up on the arm by the hand) or twisting can cause the annular ligament to slip over the radial head and become entrapped in the radiohumeral joint.
Clinical features
Diagnostics
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Treatment
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