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Evaluation of a new...
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Otten, Volker,1973-Umeå universitet,Ortopedi
(författare)
Evaluation of a new cemented highly cross-linked all-polyethylene cup : a prospective and randomised study assessing wear and fixation characteristics using radiostereometric analysis
- Artikel/kapitelEngelska2022
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2021-02-10
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Sage Publications,2022
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printrdacarrier
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LIBRIS-ID:oai:DiVA.org:umu-180299
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-180299URI
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https://doi.org/10.1177/1120700021989991DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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BACKGROUND AND PURPOSE: The aim of this prospective, randomised and controlled study was to evaluate the wear and fixation properties of a new cemented highly cross-linked all-polyethylene (HXLPE) cup in comparison with a conventional cemented ultra-high molecular weight polyethylene (ConvPE) cup using radiostereometric analysis (RSA).PATIENTS AND METHODS: A total of 58 patients (58 hips) with primary osteoarthritis (OA) were enrolled in a randomised controlled trial to receive either a ConvPE cup (control) or HXLPE cup (intervention) with identical geometry. The subjects were randomised in a 1:1 ratio. The primary endpoint was proximal wear measured as femoral head penetration into the cup, secondary outcomes were 3D-wear and annual proximal wear from 1 to 5 years. Cup fixation was measured as movement of the cup in relation to the acetabular bone with proximal migration being the primary outcome measure, 3D-migration and change in inclination as secondary outcomes. The patients were followed for 5 years with RSA performed postoperatively, at 3, 12, 24, and 60 months.RESULTS: The HXLPE displayed a lower median proximal femoral head penetration compared to ConvPE, with a median difference at 2 years of -0.07 mm (95% CI, -0.10 to -0.04 mm), and -0.19 mm (95% CI, -0.27 to -0.15 mm) at 5 years. Annual proximal wear between 1 and 5 years was 0.03 mm/year for HXLPE and 0.06 mm/year for ConvPE (mean difference 0.05 mm, [95% CI, 0.03-0.07 mm]). Proximal migration, 3D migration and change in inclination was numerically slightly higher for HXLPE, albeit not statistically significant.CONCLUSIONS: Compared to ConvPE, the HXLPE cup displayed significantly lower polyethylene wear. Cup migration was not statistically significant different.CLINICALTRIALS.GOV IDENTIFIER: NCT04322799.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Wästerlund, DanielUmeå universitet,Ortopedi
(författare)
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Lindbjörn, JohnUmeå universitet,Ortopedi
(författare)
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Mertens, CarlUmeå universitet,Ortopedi
(författare)
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Mukka, SebastianUmeå universitet,Ortopedi(Swepub:umu)semu0002
(författare)
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Crnalic, SeadUmeå universitet,Ortopedi(Swepub:umu)secr0001
(författare)
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Nilsson, Kjell G.Umeå universitet,Ortopedi(Swepub:umu)kjni0001
(författare)
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Umeå universitetOrtopedi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:HIP International: Sage Publications32:6, s. 779-7861120-70001724-6067
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