title: Influence of clinical and radiological variables on the extent and distribution of periprosthetic osteolysis in total hip arthroplasty with a hydroxyapatite-coated multiple-hole acetabular component: a magnetic resonance imaging study.
abstract: Polyethylene wear-induced osteolysis constitutes the most severe long-term complication of total hip arthroplasties (THA). Our aim was to assess through MRI the severity and growth pattern of osteolysis, as well as the influence clinical-radiographic variables exert. We analyzed 75 THA with an average evolution time of 13.67years. The implant was a titanium alloy, non-cemented, multiple-hole model with hydroxyapatite coating. Osteolysis was found with a peripheral pattern in 48 and a central pattern in 6; in 52 cases it was continuous, and in 4, isolated. Out of 118 screws, 20 exhibited lysis. There was a proportional correlation between osteolysis severity and wear rate with age, physical activity and acetabular abduction, as well as an association between said variables and peripheral and continuous patterns.
authors.affiliation: Department of Orthopedic Surgery and Traumatology, "San Agustín" Hospital, Avilés, Spain.
authors.forename: Iván
authors.initials: I
authors.lastname: Pérez-Coto
authors.affiliation: Department of Orthopedic Surgery and Traumatology, "San Agustín" Hospital, Avilés, Spain; Department of Orthopedic Surgery, School of Medicine, Oviedo, Spain.
authors.forename: Daniel
authors.initials: D
authors.lastname: Hernández-Vaquero
authors.affiliation: Department of Orthopedic Surgery and Traumatology, "Cabueñes" Hospital, Gijon, Spain.
authors.forename: Abelardo
authors.initials: A
authors.lastname: Suárez-Vázquez
authors.affiliation: Department of Orthopedic Surgery and Traumatology, "San Agustín" Hospital, Avilés, Spain.
authors.forename: Manuel Ángel
authors.initials: MÁ
authors.lastname: Sandoval-García
authors.affiliation: Department of Orthopedic Surgery and Traumatology, "San Agustín" Hospital, Avilés, Spain.
authors.forename: Ana
authors.initials: A
authors.lastname: Escandon-Rodriguez
mesh_terms: D000077:Acetabulum / Q000601:surgery; D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects* / Q000379:methods; D001863:Bone Screws / Q000009:adverse effects; D020099:Coated Materials, Biocompatible; D017886:Durapatite; D005260:Female; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography
chemical_list: D020099:Coated Materials, Biocompatible; D017886:Durapatite
keywords: hip arthroplasty; hydroxyapatite; magnetic resonance imaging; osteolysis; polyethylene wear; revision surgery