psoas sign

Etiology

• appendicitis (right-sided)
• iliopsoas hematoma

Clinical significance

• right lower quadrant pain on flexion of the right hip against resistance or hyperextension of the right hip, elicited in the classic presentation of appendicitis
  • the former maneuver contracts & the latter maneuver stretches the psoas muscle

Procedure

• pain ellicited by extension of the hip
• painful limitation of hip movement

Radiology

• CT of abdomen

More general terms

• sign/symptom

Additional terms

• appendicitis