High Failure Rates of the Spectron EF Stem at a Minimum of 10 Year's Follow-up |
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| Authors: | Ben J Burston Jane H Wood James R Lewis Gareth H Prosser Laura Firth David J Wood Piers J Yates |
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| Institution: | 1. Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust, Oswestry, Shropshire, UK;2. Perth Orthopaedic Institute, Nedlands, Perth WA, Australia;3. Royal Derby Hospital, Derby, UK;4. The University of Western Australia, Fremantle University Hospital, Fremantle, WA, Australia;5. School of Mathematics and Statistics, The University of Western Australia (M019), Crawley, Perth, WA, Australia;6. The University of Western Australia, Nedlands, Perth, WA, Australia;g The University of Western Australia, Fremantle University Hospital, Fremantle, WA, Australia |
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| Abstract: | We prospectively followed 112 hips, undergoing THA with a Spectron EF stem. At mean follow-up of 11.2 years, 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 11 years 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. |
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| Keywords: | spectron osteolysis hip arthroplasty failure rates aseptic loosening |
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