Psoas sign
2341983
184158812
2008-01-14T00:47:35Z
76.29.17.141
Elicited by the iliopsoas test, the '''psoas sign''' is an indicator of irritation to the [[iliopsoas group]] of [[hip flexors]] in the [[human abdomen|abdomen]].
The test is performed by passively extending the thigh of a patient with knees extended. In other words, the patient is positioned on his/her left side, and the right leg is extended behind the patient. If [[abdominal pain]] results, it is a positive psoas sign.
Because the right iliopsoas muscle lies under the appendix when the patient is [[supine_position|supine]], a "positive psoas sign" may suggest [[appendicitis]].
It could also be done by flexing the hip to 90 degrees -- with flexed knee -- asking the patient to actively flex their thigh against resistance.
==See also==
*[[Abdominal exam]]
*[[Obturator sign]]
==External links==
*[http://www.aafp.org/afp/991101ap/2027.html Acute appendicitis review in American Family Physician]
[[Category:Medical signs]]
[[es:Signo del psoas]]
[[pt:Sinal do psoas]]