Late stabilization after initial migration in patients undergoing cemented total knee arthroplasty : a 5-year followup of 2 randomized controlled trials using radiostereometric analysis

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Hasan, ShahoLeiden University Medical Centre (author)

Late stabilization after initial migration in patients undergoing cemented total knee arthroplasty : a 5-year followup of 2 randomized controlled trials using radiostereometric analysis

Article/chapterEnglish2022

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2022-01-24
Medical Journals Sweden AB,2022
6 s.

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LIBRIS-ID:oai:lup.lub.lu.se:04644d3d-c855-4332-ac69-2581cd8e5b67
https://lup.lub.lu.se/record/04644d3d-c855-4332-ac69-2581cd8e5b67URI
https://doi.org/10.2340/17453674.2022.1381DOI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype
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BACKGROUND AND PURPOSE: In total knee arthroplasty (TKA), metal-backed (MBT) and all-polyethylene (APT) designs have shown comparable implant migration up to 2 years postoperatively using radiostereometric analysis (RSA). However, studies comparing mid-term migration of both designs are lacking. Furthermore, continuously migrating TKAs up to 2 years may continue to migrate or stabilize thereafter. Therefore, we compared 5-year migration of MBT and APT using either cruciate-stabilizing (CS) or posteriorstabilizing (PS) designs and specifically assessed migration profiles of continuously migrating TKAs beyond 2 years. PATIENTS AND METHODS: The present study includes results from 2 randomized trials comparing migration of cemented MBT with APT of either CS (CS study, n = 59) or PS (PS study, n = 56) design. 2 surgeons performed all surgeries. We used a linear mixed model for the analyses. RESULTS: The overall migration between MBT and APT TKAs was similar for either the CS or PS design over a 5-year period. In both studies combined, 9 implants showed continuous migration in the second postoperative year, of which 1 (APT-CS) was revised for instability, 4 (2 MBT-CS, MBT-PS, APT-PS) stabilized, and 4 (2 MBT-CS, APT-CS, MBT-PS) lacked 5-year data. INTERPRETATION: Overall migration was similar between MBT and APT TKAs up to 5 years, for both the CS and PS design. 4 initially migrating TKAs stabilized between 2- and 5-year follow-up, stressing the need for longer-term followup to determine whether second-year continuous migration correctly predicts loosening.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Ortopedi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Orthopaedics hsv//eng

Added entries (persons, corporate bodies, meetings, titles ...)

Kaptein, Bart L.Leiden University Medical Centre (author)
Marang-van de Mheen, Perla J.Leiden University Medical Centre (author)
Van Hamersveld, Koen T.Leiden University Medical Centre (author)
Nelissen, Rob G.H.H.Leiden University Medical Centre (author)
Toksvig-Larsen, SörenLund University,Lunds universitet,Ortopedi, Lund,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Orthopaedics (Lund),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Hässleholm hospital(Swepub:lu)ort-stl (author)
Leiden University Medical CentreOrtopedi, Lund (creator_code:org_t)

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In:Acta Orthopaedica: Medical Journals Sweden AB93, s. 271-2761745-36821745-3674

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By the author/editor: Hasan, Shaho; Kaptein, Bart L.; Marang-van de Mh ...; Van Hamersveld, ...; Nelissen, Rob G. ...; Toksvig-Larsen, ...

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Orthopaedics

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By the university: Lund University

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