A 25-year-old woman presented to the office due to a fever of 3 days duration. The fever is associated with difficulty walking and left flank pain. A few days ago, the patient has received IV antibiotics for a skin abscess. She has IV substance drug abuse. The temperature is 38.9° C (102° F). Physical examination shows the resistance to extension of the hip due to exacerbation of the pain. This patient's presentation is due to the involvement of which of the following muscles?

Question

Quizplus · Accepted Answer

Eductional Objective: Psoas abscess has the manifestations of fever, flank or back pain, groin mass, and impaired walking. Psoas sign is one of the signs of psoas abscess. Psoas sign manifests with the painful extension of the hip. Patients with diabetes mellitus, substance drug abuse, and immunosuppression are at risk to develop psoas abscess due to lymphatic or hematogenous spread.

A 25-Year-Old Woman Presented to the Office Due to a Fever