title: Failed metal-on-metal total hip arthroplasty presenting as painful groin mass with associated weight loss and night sweats.
abstract: We report an unusual case of a failed metal-on-metal total hip arthroplasty presenting as a groin mass with associated weight loss, night sweats, and raised inflammatory markers. After a malignant process was ruled out, the patient was found to have a loose acetabular component. Histopathologic results revealed features of an aseptic lymphocytic vasculitic associated lesion. All symptoms resolved completely after the metal-on-metal bearing was revised to metal-on-polyethylene.
authors.affiliation: Department of Orthopaedic Surgery, Lister Hospital, East and North Hertfordshire NHS Trust, Stevenage, United Kingdom.
authors.forename: Håvard
authors.initials: H
authors.lastname: Molvik
authors.forename: Sammy A
authors.initials: SA
authors.lastname: Hanna
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: de Roeck
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D003937:Diagnosis, Differential; D005260:Female; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D006945:Hyperhidrosis; D008214:Lymphocytes / Q000473:pathology; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D016896:Treatment Outcome; D014657:Vasculitis / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D014800:Vitallium / Q000009:adverse effects*; D015431:Weight Loss
chemical_list: D014800:Vitallium