Retrieval Analysis of Posterior Stabilized Polyethylene Tibial Inserts and Its Clinical Relevance

This was a retrieval analysis of 83 PS inserts to assess the effect of limb alignment, implant position and joint line position on the pattern of wear in posterior stabilized (PS) tibial inserts. The total damage score was significantly higher in knees with postoperative varus alignment more than 3°...

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Bibliographic Details
Published in:The Journal of arthroplasty Vol. 29; no. 2; pp. 365 - 368
Main Authors: Pang, Hee-Nee, Jamieson, Paul, Teeter, Matthew G., McCalden, Richard W., Naudie, Douglas D.R., MacDonald, Steven J.
Format: Journal Article
Language:English
Published: United States Elsevier Inc 01.02.2014
Subjects:
Aged
Aged, 80 and over
arthroplasty
Arthroplasty, Replacement, Knee - adverse effects
Arthroplasty, Replacement, Knee - instrumentation
Biocompatible Materials
Biomechanical Phenomena
damage
Device Removal
Equipment Failure Analysis
Female
Humans
knee
Knee Joint - surgery
Knee Prosthesis - adverse effects
Male
Middle Aged
Orthopedics
Polyethylene
posterior stabilized
Prosthesis Design
Prosthesis Failure
Radiography
Reoperation
Tibia - diagnostic imaging
Tibia - surgery
knee
damage
posterior stabilized
arthroplasty
ISSN:0883-5403, 1532-8406, 1532-8406
Online Access:Get full text
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Summary:This was a retrieval analysis of 83 PS inserts to assess the effect of limb alignment, implant position and joint line position on the pattern of wear in posterior stabilized (PS) tibial inserts. The total damage score was significantly higher in knees with postoperative varus alignment more than 3° (P = 0.03). The total damage score to the post was significantly more in knees with joint line elevation more than 5 mm (9.7 ± 3.9, compared to 6.5 ± 3.7 in knees with less joint line elevation) (P = 0.05). Limb malalignment and joint line elevation resulted in more damage in PS inserts. An external rotation subluxation damage pattern was found in joint line elevation.
Bibliography:ObjectType-Article-1
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ISSN:0883-5403
1532-8406
1532-8406
DOI:10.1016/j.arth.2013.05.029