The Impact of Coronal Plane Alignment on Polyethylene Wear and Damage in Total Knee Arthroplasty: A Retrieval Study

Coronal plane alignment is one of the contributing factors to polyethylene wear in total knee arthroplasty. Based on 95 retrieved polyethylene inserts, wear and damage patterns were analyzed in relationship to the overall mechanical alignment and to the position of the tibial component. A progressio...

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Veröffentlicht in:The Journal of arthroplasty Jg. 32; H. 6; S. 2012 - 2016
Hauptverfasser: Vandekerckhove, Pieter-Jan T.K., Teeter, Matthew G., Naudie, Douglas D.R., Howard, James L., MacDonald, Steven J., Lanting, Brent A.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States Elsevier Inc 01.06.2017
Schlagworte:
Aged
Arthroplasty, Replacement, Knee - instrumentation
Arthroplasty, Replacement, Knee - methods
Body Mass Index
coronal plane alignment
Extremities
Female
Humans
Knee Prosthesis
Male
Middle Aged
Orthopedics
Polyethylene - chemistry
polyethylene wear
Prosthesis Failure
retrieval study
Tibia - surgery
total knee arthroplasty
wear and damage
coronal plane alignment
total knee arthroplasty
wear and damage
retrieval study
polyethylene wear
ISSN:0883-5403, 1532-8406, 1532-8406
Online-Zugang:Volltext
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Zusammenfassung:Coronal plane alignment is one of the contributing factors to polyethylene wear in total knee arthroplasty. Based on 95 retrieved polyethylene inserts, wear and damage patterns were analyzed in relationship to the overall mechanical alignment and to the position of the tibial component. A progression of wear was observed with progressively mechanical varus alignment. However, there was significantly more damage in the lateral compartment in the mild and moderate varus group compared to the valgus group. No difference in damage was seen between all groups for tibial component positioning in valgus or varus. Progressive wear was observed with progressively varus alignment with more damage at the lateral side. This observation is unique and might be explained by lateral condylar lift-off inducing impact and shear loading in the varus group.
Bibliographie: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.2016.12.048