title: Iliopsoas Irritation as Presentation of Head-Neck Corrosion After Total Hip Arthroplasty: A Case Series.
abstract: Corrosion of modular components at the femoral neck remains a complication of total hip arthroplasty (THA). The authors have found the iliopsoas sign (pain on resisted flexion of the hip) to be suggestive of femoral component corrosion. These cases represented 8 of 120 revision hip arthroplasties (7%) performed at the authors' institution. After the revisions, all iliopsoas tendonitis symptoms resolved. Based on the authors' experience and the recent literature, they recommend that the iliopsoas sign or presentation of a sterile iliopsoas abscess in a previously well-functioning THA be concern for corrosion of the femoral component of the total hip.
authors.affiliation: Orthopedic + Fracture Specialists, Providence St. Vincent Medical Center, 11782 Southwest Barnes Road #300, Portland, OR 97225, USA.
authors.forename: Laura
authors.initials: L
authors.lastname: Matsen Ko
authors.affiliation: Providence Health & Services, Orthopedic Institute, 5251 Northeast Glisan Street, Building A, Suite 326, Portland, OR 97213, USA. Electronic address: jacob.coleman@providence.org.
authors.forename: Jacob J
authors.initials: JJ
authors.lastname: Coleman
authors.affiliation: Orthopedic + Fracture Specialists, Providence St. Vincent Medical Center, 11782 Southwest Barnes Road #300, Portland, OR 97225, USA.
authors.forename: Venessa
authors.initials: V
authors.lastname: Stas
authors.affiliation: Orthopedic + Fracture Specialists, Providence St. Vincent Medical Center, 11782 Southwest Barnes Road #300, Portland, OR 97225, USA.
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Duwelius
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D003343:Corrosion; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D016659:Psoas Abscess / Q000175:diagnosis / Q000209:etiology; D016658:Psoas Muscles; D012189:Retrospective Studies; D052256:Tendinopathy / Q000175:diagnosis* / Q000209:etiology
keywords: Complication; Corrosion; Iliopsoas; Metallosis; Pseudotumor; Total hip arthroplasty