title: High failure rates of the Spectron EF stem at a minimum of 10 year's follow-up.
abstract: We prospectively followed 112 hips, undergoing THA with a Spectron EF stem. At mean follow-up of 11.2years, 21 patients had died. We obtained radiological follow-up in 99% and clinical follow-up in 100% of the surviving 91 hips. Fifty-four percent demonstrated osteolysis in at least one Gruen zone. Twenty-two hips required revision for all causes, with a further five stems radiologically loose. With endpoint being stem revision for aseptic loosening or radiological failure, survivorship at 11years was 0.783. We believe the addition of a rougher surface finish has contributed to the high levels of osteolysis and stem failure seen with the Spectron EF.
authors.affiliation: Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust, Oswestry, Shropshire, UK.
authors.forename: Ben J
authors.initials: BJ
authors.lastname: Burston
authors.affiliation: Perth Orthopaedic Institute, Nedlands, Perth WA, Australia.
authors.forename: Jane H
authors.initials: JH
authors.lastname: Wood
authors.affiliation: Royal Derby Hospital, Derby, UK.
authors.forename: James R
authors.initials: JR
authors.lastname: Lewis
authors.affiliation: The University of Western Australia, Fremantle University Hospital, Fremantle, WA, Australia.
authors.forename: Gareth H
authors.initials: GH
authors.lastname: Prosser
authors.affiliation: School of Mathematics and Statistics, The University of Western Australia (M019), Crawley, Perth, WA, Australia.
authors.forename: Laura
authors.initials: L
authors.lastname: Firth
authors.affiliation: The University of Western Australia, Nedlands, Perth, WA, Australia.
authors.forename: David J
authors.initials: DJ
authors.lastname: Wood
authors.affiliation: The University of Western Australia, Fremantle University Hospital, Fremantle, WA, Australia.
authors.forename: Piers J
authors.initials: PJ
authors.lastname: Yates
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D002484:Cementation; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000601:surgery*; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D007592:Joint Diseases / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000209:etiology / Q000601:surgery; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D013997:Time Factors; D016896:Treatment Outcome
keywords: aseptic loosening; failure rates; hip arthroplasty; osteolysis; spectron