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Comparison of early migration patterns between a ceramic and polyethylene liner in uncemented Trabecular Titanium cups: a 2-year randomized controlled trial of 52 hips using radiostereometric analysis

BACKGROUND AND PURPOSE: Ceramic liners may reduce early stability of uncemented acetabular components due to higher stiffness. However, the bone ingrowth capacities of porous trabecular titanium might compensate for this effect. This prospective randomized trial quantifies migration patterns of the...

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Autores principales: KLAASSEN, Amanda D, SCHÄFFER, Elisabeth A, WILLIGENBURG, Nienke W, VAN BEERS, Loes W A H, SCHOLTES, Vanessa A B, VAN DER HULST, Victor P M, KOSTER, Lennard A, KAPTEIN, Bart L, MOOJEN, Dirk Jan F, POOLMAN, Rudolf W
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medical Journals Sweden, on behalf of the Nordic Orthopedic Federation 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9052219/
https://www.ncbi.nlm.nih.gov/pubmed/35485295
http://dx.doi.org/10.2340/17453674.2022.2267
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author KLAASSEN, Amanda D
SCHÄFFER, Elisabeth A
WILLIGENBURG, Nienke W
VAN BEERS, Loes W A H
SCHOLTES, Vanessa A B
VAN DER HULST, Victor P M
KOSTER, Lennard A
KAPTEIN, Bart L
MOOJEN, Dirk Jan F
POOLMAN, Rudolf W
author_facet KLAASSEN, Amanda D
SCHÄFFER, Elisabeth A
WILLIGENBURG, Nienke W
VAN BEERS, Loes W A H
SCHOLTES, Vanessa A B
VAN DER HULST, Victor P M
KOSTER, Lennard A
KAPTEIN, Bart L
MOOJEN, Dirk Jan F
POOLMAN, Rudolf W
author_sort KLAASSEN, Amanda D
collection PubMed
description BACKGROUND AND PURPOSE: Ceramic liners may reduce early stability of uncemented acetabular components due to higher stiffness. However, the bone ingrowth capacities of porous trabecular titanium might compensate for this effect. This prospective randomized trial quantifies migration patterns of the Delta-TT cup, and compares polyethylene and ceramic liners. PATIENTS AND METHODS: Patients undergoing primary uncemented total hip arthroplasty with the Delta-TT cup and femoral stem with ceramic head were randomized to a polyethylene (n = 25) or ceramic (n = 28) liner. Radiostereometric analysis (RSA) radiographs, patient-reported hip function (HOOS-PS, OHS), and quality of life (EQ5D) were collected at baseline and 1.5, 3, 6, 12, and 24 months postoperatively. Model-based RSA was used to calculate 3D cup translation and rotation, and mixed models were used to compare effects over time between groups. RESULTS: At 2 years follow-up, Delta-TT cups showed similar mean proximal translation of 0.56 mm (95% CI 0.38– 0.75) in the ceramic (CE) group and 0.54 mm (0.30–0.77) in the polyethylene (PE) group, with a between group effect of 0.02 mm (–0.20–0.23). Most cup migration occurred in the first 1.5 to 3 months, stabilizing within 6 months. Any between-group effects were ≤ 0.30 mm for translation and ≤ 0.45° for rotation. Improvements in patient-reported hip function and quality of life were similar in both groups. INTERPRETATION: Regardless of liner type, Delta-TT cups showed some initial migration and stabilized within 6 months, which seems promising for longterm fixation in both cup-liner constructs.
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spelling pubmed-90522192022-04-29 Comparison of early migration patterns between a ceramic and polyethylene liner in uncemented Trabecular Titanium cups: a 2-year randomized controlled trial of 52 hips using radiostereometric analysis KLAASSEN, Amanda D SCHÄFFER, Elisabeth A WILLIGENBURG, Nienke W VAN BEERS, Loes W A H SCHOLTES, Vanessa A B VAN DER HULST, Victor P M KOSTER, Lennard A KAPTEIN, Bart L MOOJEN, Dirk Jan F POOLMAN, Rudolf W Acta Orthop Article BACKGROUND AND PURPOSE: Ceramic liners may reduce early stability of uncemented acetabular components due to higher stiffness. However, the bone ingrowth capacities of porous trabecular titanium might compensate for this effect. This prospective randomized trial quantifies migration patterns of the Delta-TT cup, and compares polyethylene and ceramic liners. PATIENTS AND METHODS: Patients undergoing primary uncemented total hip arthroplasty with the Delta-TT cup and femoral stem with ceramic head were randomized to a polyethylene (n = 25) or ceramic (n = 28) liner. Radiostereometric analysis (RSA) radiographs, patient-reported hip function (HOOS-PS, OHS), and quality of life (EQ5D) were collected at baseline and 1.5, 3, 6, 12, and 24 months postoperatively. Model-based RSA was used to calculate 3D cup translation and rotation, and mixed models were used to compare effects over time between groups. RESULTS: At 2 years follow-up, Delta-TT cups showed similar mean proximal translation of 0.56 mm (95% CI 0.38– 0.75) in the ceramic (CE) group and 0.54 mm (0.30–0.77) in the polyethylene (PE) group, with a between group effect of 0.02 mm (–0.20–0.23). Most cup migration occurred in the first 1.5 to 3 months, stabilizing within 6 months. Any between-group effects were ≤ 0.30 mm for translation and ≤ 0.45° for rotation. Improvements in patient-reported hip function and quality of life were similar in both groups. INTERPRETATION: Regardless of liner type, Delta-TT cups showed some initial migration and stabilized within 6 months, which seems promising for longterm fixation in both cup-liner constructs. Medical Journals Sweden, on behalf of the Nordic Orthopedic Federation 2022-04-28 /pmc/articles/PMC9052219/ /pubmed/35485295 http://dx.doi.org/10.2340/17453674.2022.2267 Text en © 2022 The Author(s) https://creativecommons.org/licenses/by-nc/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (https://creativecommons.org/licenses/by-nc/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material for non-commercial purposes, provided proper attribution to the original work.
spellingShingle Article
KLAASSEN, Amanda D
SCHÄFFER, Elisabeth A
WILLIGENBURG, Nienke W
VAN BEERS, Loes W A H
SCHOLTES, Vanessa A B
VAN DER HULST, Victor P M
KOSTER, Lennard A
KAPTEIN, Bart L
MOOJEN, Dirk Jan F
POOLMAN, Rudolf W
Comparison of early migration patterns between a ceramic and polyethylene liner in uncemented Trabecular Titanium cups: a 2-year randomized controlled trial of 52 hips using radiostereometric analysis
title Comparison of early migration patterns between a ceramic and polyethylene liner in uncemented Trabecular Titanium cups: a 2-year randomized controlled trial of 52 hips using radiostereometric analysis
title_full Comparison of early migration patterns between a ceramic and polyethylene liner in uncemented Trabecular Titanium cups: a 2-year randomized controlled trial of 52 hips using radiostereometric analysis
title_fullStr Comparison of early migration patterns between a ceramic and polyethylene liner in uncemented Trabecular Titanium cups: a 2-year randomized controlled trial of 52 hips using radiostereometric analysis
title_full_unstemmed Comparison of early migration patterns between a ceramic and polyethylene liner in uncemented Trabecular Titanium cups: a 2-year randomized controlled trial of 52 hips using radiostereometric analysis
title_short Comparison of early migration patterns between a ceramic and polyethylene liner in uncemented Trabecular Titanium cups: a 2-year randomized controlled trial of 52 hips using radiostereometric analysis
title_sort comparison of early migration patterns between a ceramic and polyethylene liner in uncemented trabecular titanium cups: a 2-year randomized controlled trial of 52 hips using radiostereometric analysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9052219/
https://www.ncbi.nlm.nih.gov/pubmed/35485295
http://dx.doi.org/10.2340/17453674.2022.2267
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