Pneumoarthrogram Sign
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Atlas of Signs in Musculoskeletal Radiology is approved by the ARRS (American Roentgen Ray Society) and is included in AJR Webreview
A. Gentili,MD, M. Beller, MD, S. Masih, MD, L.L. Seeger, MD

Diagnosis:

Normal - No joint effusion

Discussion:

One radiograph of the shoulder (A), and one of the hip (B), both with a crescent of air-density within the joint adjacent to the head of the humerus and femur respectively. The pneumoarthrogram sign is simply the finding of gas-density within the joint and signifies that no joint effusion is present. It is a reliable sign and of great value when identified.


AP Shoulder - Click on the image for a larger versionAFrog lateral hip - Click on the image for a larger versionB

References:

bulletMartel W, Poznanski AK: The value of traction during roentgenography of the hip. Radiology 1970, 94:497-503.          [See related articles]

 

 

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Atlas of Signs in Musculoskeletal Radiology is approved by the ARRS (American Roentgen Ray Society) and is included in AJR Webreview
A. Gentili,MD, M. Beller, MD, S. Masih, MD, L.L. Seeger, MD