title: Radiological evaluation of acetabular erosion after antibiotic-impregnated polymethylmethacrylate spacer (Spacer-G).
abstract: Different types of hip spacers have been described (hand-made, custom-molded or prefabricated) for treatment of a chronic hip infection. A potential disadvantage of monoblock prefabricated spacer is that it may cause acetabular bone loss. This study assesses the radiological acetabular erosion using an antibiotic-impregnated pre-fabricated polymethylmethacrylate Spacer-G. We retrospectively reviewed the radiographs of thirty five patients who were managed with Spacer-G to treat chronic hip infection. No acetabular erosion were observed in thirty two patients with a mean time from the first to second stage and from the first to the last radiograph of 5.09 and 3.77 months respectively. In three patients the time between the radiographs was more than one year and the second stage was not performed; two developed a protrusion acetabuli whereas the other one a destruction of the acetabular roof. Using a Spacer-G in chronic hip infection treatment for less than one year is not associated with radiological acetabular erosion if the patient is maintained at partial weight bearing.
authors.affiliation: Department of Orthopaedic Surgery, Hospital Clínic, University of Barcelona, Spain.
authors.forename: Ester
authors.initials: E
authors.lastname: García-Oltra
authors.forename: Guillem
authors.initials: G
authors.lastname: Bori
authors.forename: Xavier
authors.initials: X
authors.lastname: Tomas
authors.forename: Xavier
authors.initials: X
authors.lastname: Gallart
authors.forename: Sebastian
authors.initials: S
authors.lastname: Garcia
authors.forename: Alex
authors.initials: A
authors.lastname: Soriano
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging* / Q000293:injuries*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000008:administration & dosage*; D005260:Female; D005839:Gentamicins / Q000008:administration & dosage*; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D019904:Polymethyl Methacrylate; D011474:Prosthesis Design; D016459:Prosthesis-Related Infections / Q000000981:diagnostic imaging* / Q000188:drug therapy* / Q000209:etiology; D011859:Radiography; D012189:Retrospective Studies
chemical_list: D000900:Anti-Bacterial Agents; D005839:Gentamicins; D019904:Polymethyl Methacrylate