obturator sign


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obturator

 [ob´too͡-ra″tor]
1. a disk or plate that closes an opening.
2. a prosthesis for closing an acquired or congenital opening of the palate (cleft palate).
obturator sign pain on outward pressure on the obturator foramen as a sign of inflammation in the sheath of the obturator nerve, probably caused by appendicitis.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

obturator sign

Obturator test Internal medicine A clinical finding in a Pt lying on his back with the right hip and knee flexed and rotated internally and externally; pain in the right lower quadrant is due to irritation of the medial internal obturator muscle, and is 'classically' associated with appendicitis, but may also occur in right pelvic abscesses Imaging A unilateral ↑ in obturator muscle bulk, seen as a soft tissue bulge on the inner pelvis with medial displacement of the normal fat line, is characteristic of infectious arthritis, but may be seen in traumatic hemorrhage.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

obturator sign

Pain on inward rotation of the hip, which stretches the obturator internus muscle. The result may be positive in acute appendicitis.
See also: sign
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