title: Psoas muscle pyogenic abscess in association with infected hip arthroplasty: a rare case of simultaneous bilateral presentation.
abstract: Simultaneous bilateral presentation of psoas abscess with prosthetic joint involvement is extremely rare. A 68-year-old woman presented to us with bilateral dull aching groin pain of 6 months' duration, which flared up in the past month, associated with pyrexial symptoms. She had undergone bilateral hip replacements in the past with uneventful recovery. MRI showed bilateral psoas muscle collection in communication with the hip joints. Preoperative hip aspirate demonstrated frank pus with positivity on Gram stain and radiographs confirmed prosthetic loosening of bilateral hips. The patient subsequently underwent two-stage revision arthroplasty of both infected hip implants. At 5-year follow-up, the patient remains asymptomatic with good functional outcome and no recurrence on serial MRI.
authors.affiliation: Department of Orthopaedics, University of Padova, Padova, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Volpin
authors.affiliation: Department of Orthopaedics, University College Hospitals London, London, UK.
authors.forename: Sunil Gurpur
authors.initials: SG
authors.lastname: Kini
authors.affiliation: University of Padova, Padova, Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Berizzi
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011475:Prosthesis Failure / Q000009:adverse effects; D016459:Prosthesis-Related Infections / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D016659:Psoas Abscess / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D012086:Reoperation; D013203:Staphylococcal Infections / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D016896:Treatment Outcome