ABSTRACT
The treatment results of the acute iliopsoitis in 29 patients were analyzed. The right side inflammation was observed more frequently (n=17). The most common infectious agent was the Staphylococcus aureus. The source of the inflammation was septic lesions of the lower body, whereas the perdisposal factors were considered to be the diabetes mellitus, drug abuse and immunodeficiency. The cardinal diagnostic sign of the acute iliopsoitis proved to be the psoas-symptom. The main diagnostic instruments were the ultrasound investigation, CT and MRI. 1 patient was successfully treated conservatively, though the rest 28 demanded surgical opening and drainage of m. iliopsoas. The lethality rate was 3,4%. 96,6% of the treated patients were successfully cured.