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Equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses: A randomized clinical RSA study with 2-year follow-up
BACKGROUND AND PURPOSE: Cup failure is a recognized problem in total trapeziometacarpal (TM) joint prostheses; it may be related to poor fixation, which can be revealed by radiostereometric analysis (RSA). We compared the early implant migration of cemented trapezium cups to that of uncemented screw...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Informa Healthcare
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3584612/ https://www.ncbi.nlm.nih.gov/pubmed/23343372 http://dx.doi.org/10.3109/17453674.2013.765625 |
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author | Hansen, Torben Bæk Stilling, Maiken |
author_facet | Hansen, Torben Bæk Stilling, Maiken |
author_sort | Hansen, Torben Bæk |
collection | PubMed |
description | BACKGROUND AND PURPOSE: Cup failure is a recognized problem in total trapeziometacarpal (TM) joint prostheses; it may be related to poor fixation, which can be revealed by radiostereometric analysis (RSA). We compared the early implant migration of cemented trapezium cups to that of uncemented screw cups. PATIENTS AND METHODS: In a prospective, parallel-group, randomized patient-blinded clinical trial, we included 32 hands in 28 patients (5 males) with a mean age of 58 (40–77) years and with Eaton stage-2 or -3 osteoarthritis of the trapeziometacarpal joint. Patients were randomized to surgery with a cemented DLC all-polyethylene cup (C) (n = 16) or an uncemented hydroxyapatite-coated chrome-cobalt Elektra screw cup (UC) (n = 16). Uncemented cups were inserted without threading of the bone. Stereoradiographs for evaluation of cup migration (primary effect size) and DASH and pain scores were obtained during 2 years of follow-up. RESULTS: The 2-year total translation (TT) was similar (p = 0.2): 0.24 mm (SD 0.10) for the C (n = 11) and 0.19 mm (SD 0.16) for the UC (n = 11). Variances were similar (p = 0.4). Judged by RSA, 2 UC cups and 1 C cup became loose (TT > 1 mm). Both UC cups were found to be loose at revision. Grip strength, pain, and DASH scores were similar between groups at all measurement points. INTERPRETATION: Early implant fixation and clinical outcome were equally good with both cup designs. This is the first clinical RSA study on trapezium cups, and the method appears to be clinically useful for detection of loose implants. |
format | Online Article Text |
id | pubmed-3584612 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Informa Healthcare |
record_format | MEDLINE/PubMed |
spelling | pubmed-35846122013-03-07 Equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses: A randomized clinical RSA study with 2-year follow-up Hansen, Torben Bæk Stilling, Maiken Acta Orthop Hand BACKGROUND AND PURPOSE: Cup failure is a recognized problem in total trapeziometacarpal (TM) joint prostheses; it may be related to poor fixation, which can be revealed by radiostereometric analysis (RSA). We compared the early implant migration of cemented trapezium cups to that of uncemented screw cups. PATIENTS AND METHODS: In a prospective, parallel-group, randomized patient-blinded clinical trial, we included 32 hands in 28 patients (5 males) with a mean age of 58 (40–77) years and with Eaton stage-2 or -3 osteoarthritis of the trapeziometacarpal joint. Patients were randomized to surgery with a cemented DLC all-polyethylene cup (C) (n = 16) or an uncemented hydroxyapatite-coated chrome-cobalt Elektra screw cup (UC) (n = 16). Uncemented cups were inserted without threading of the bone. Stereoradiographs for evaluation of cup migration (primary effect size) and DASH and pain scores were obtained during 2 years of follow-up. RESULTS: The 2-year total translation (TT) was similar (p = 0.2): 0.24 mm (SD 0.10) for the C (n = 11) and 0.19 mm (SD 0.16) for the UC (n = 11). Variances were similar (p = 0.4). Judged by RSA, 2 UC cups and 1 C cup became loose (TT > 1 mm). Both UC cups were found to be loose at revision. Grip strength, pain, and DASH scores were similar between groups at all measurement points. INTERPRETATION: Early implant fixation and clinical outcome were equally good with both cup designs. This is the first clinical RSA study on trapezium cups, and the method appears to be clinically useful for detection of loose implants. Informa Healthcare 2013-02 2013-02-26 /pmc/articles/PMC3584612/ /pubmed/23343372 http://dx.doi.org/10.3109/17453674.2013.765625 Text en Copyright: © Nordic Orthopaedic Federation http://creativecommons.org/licenses/by-nc/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the source is credited. |
spellingShingle | Hand Hansen, Torben Bæk Stilling, Maiken Equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses: A randomized clinical RSA study with 2-year follow-up |
title | Equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses: A randomized clinical RSA study with 2-year follow-up |
title_full | Equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses: A randomized clinical RSA study with 2-year follow-up |
title_fullStr | Equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses: A randomized clinical RSA study with 2-year follow-up |
title_full_unstemmed | Equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses: A randomized clinical RSA study with 2-year follow-up |
title_short | Equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses: A randomized clinical RSA study with 2-year follow-up |
title_sort | equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses: a randomized clinical rsa study with 2-year follow-up |
topic | Hand |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3584612/ https://www.ncbi.nlm.nih.gov/pubmed/23343372 http://dx.doi.org/10.3109/17453674.2013.765625 |
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