Delayed diagnosis and treatment of a psoas abscess as a link between spondylodiscitis and septic necrosis of the femoral head: a case report

Main Article Content

Marco Scaglia
Giovanni Lugani
Marco Cassini
Carlo Ambrosini
Bruno Magnan

Keywords

Spine, Hip, Infection, Spondylodiscitis, Psoas abscess, Femoral head necrosis

Abstract

Background: Infections of the spine and hip joint are not common and, as described in literature,
they are occasionally linked by a psoas abscess. In patients suffering back pain with history of spondylodiscitis,
the spine as primary source of infection for a secondary psoas abscess should always be included in differential
diagnosis. A delay in diagnosis of the psoas abscess could lead to septic femoral head necrosis. Case report: A
case of a 65-year-old woman affected by septic femoral head necrosis due to spondylodiscitis and secondary
psoas abscess is reported; the patient needed a specific antibiotic therapy then undergoing a total hip arthroplasty(THA). Discussion and conclusion: Diagnoses of lumbar spine infection and psoas abscess are difficultand often delayed. Since the symptoms of both are non-specific, high degree of suspicious is necessary. In psoas abscess, an early diagnosis is important, because a delayed treatment could result in septic femoral head necrosis requiring both a prolonged antibiotic therapy and a THA.

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