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]]