Three-Dimensional Surface Deviation Maps for Analysis of Retrieved Polyethylene Acetabular Liners Using Micro-Computed Tomography

Micro-computed tomography (micro-CT) has previously been validated for measuring wear volume in polyethylene acetabular liners. The creation of 3-dimensional (3D) articular and backside surface deviation maps using micro-CT is described. An acetabular liner was retrieved after 16.7 years of implanta...

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Vydáno v:The Journal of arthroplasty Ročník 25; číslo 2; s. 330 - 332
Hlavní autoři: Teeter, Matthew G., Naudie, Douglas D.R., Charron, Kory D., Holdsworth, David W.
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States Elsevier Inc 01.02.2010
Témata:
acetabular liner
Acetabulum
Arthroplasty, Replacement, Hip - instrumentation
Device Removal
Equipment Failure Analysis - methods
Hip Joint - surgery
Hip Prosthesis
Humans
micro-computed tomography
Orthopedics
Polyethylene
polyethylene wear
retrieval analysis
total hip arthroplasty
X-Ray Microtomography - methods
total hip arthroplasty
acetabular liner
micro-computed tomography
retrieval analysis
polyethylene wear
ISSN:0883-5403, 1532-8406, 1532-8406
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Shrnutí:Micro-computed tomography (micro-CT) has previously been validated for measuring wear volume in polyethylene acetabular liners. The creation of 3-dimensional (3D) articular and backside surface deviation maps using micro-CT is described. An acetabular liner was retrieved after 16.7 years of implantation and scanned with micro-CT along with a new, never-implanted liner of the same size and type. The liner surface geometries were reconstructed and co-aligned. A 3D comparison and cross-sectional analysis was performed. Maximum 3D deviation of the articular surface was −2.48 ± 0.02 mm, with maximum backside deviation of 0.46 ± 0.02 mm. Micro-CT can measure surface deviation and therefore calculate the volume of wear plus creep of retrieved acetabular liners, and may be applicable for wear simulator studies and analyzing other polyethylene components including tibial inserts.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0883-5403
1532-8406
1532-8406
DOI:10.1016/j.arth.2009.11.001