Revision 4 for 'Posterior fat pad sign (elbow)'

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Posterior fat pad sign

Posterior fat pad sign is visualzation of lucent crescent of fat located in olecranon fossa on true lateral veiw of elbow joint while the elbow flexed in right angle.Normally posterior fat pad will not be visualize in this view . It indicates elbow joint effusion . In appropriate setting of trauma , it can be a clue for occult non displaced supracondar fractures particularly  in children or occult non displaced radial head fracutre particularly in adult .

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