Cracking and impingement in ultra-high-molecular-weight polyethylene acetabular liners

Michael V. Birman; Philip C. Noble; Michael A. Conditt; Steve Li; Kenneth Mathis

doi:10.1016/j.arth.2005.05.001

Cracking and impingement in ultra-high-molecular-weight polyethylene acetabular liners

Michael V. Birman, Philip C. Noble, Michael A. Conditt, Steve Li, Kenneth Mathis

Academic Institute

Research output: Contribution to journal › Article › peer-review

65 Scopus citations

Abstract

The purpose of this study was to determine the prevalence of crack formation in conventional ultra-high-molecular-weight polyethylene cups and its association with rim impingement, oxidation, and time in situ. One hundred twenty acetabular cups were retrieved during revision total hip arthroplasty. In 40% (48/120) of the retrieved specimens, multiple subsurface cracks of several millimeters in length were revealed by transillumination. In 5 specimens, full thickness cracks led to fragmentation of the liner before revision. Thirty-eight (32%) liners had regions of moderate to severe impingement damage to the rim; cracks were initiated at the site of impingement in all but 1 liner (P < .0001). Cracks commonly occur in conventional ultra-high-molecular-weight polyethylene liners, often after neck impingement and almost always in association with oxidation of the polymer.

Original language	English (US)
Pages (from-to)	87-92
Number of pages	6
Journal	Journal of Arthroplasty
Volume	20
Issue number	SUPPL. 3
DOIs	https://doi.org/10.1016/j.arth.2005.05.001
State	Published - Oct 2005

Keywords

Cross-linked polyethylene
Hip arthroplasty
Impingement
Oxidation
Retrieval
Wear

ASJC Scopus subject areas

Orthopedics and Sports Medicine
Surgery

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10.1016/j.arth.2005.05.001

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title = "Cracking and impingement in ultra-high-molecular-weight polyethylene acetabular liners",

abstract = "The purpose of this study was to determine the prevalence of crack formation in conventional ultra-high-molecular-weight polyethylene cups and its association with rim impingement, oxidation, and time in situ. One hundred twenty acetabular cups were retrieved during revision total hip arthroplasty. In 40% (48/120) of the retrieved specimens, multiple subsurface cracks of several millimeters in length were revealed by transillumination. In 5 specimens, full thickness cracks led to fragmentation of the liner before revision. Thirty-eight (32%) liners had regions of moderate to severe impingement damage to the rim; cracks were initiated at the site of impingement in all but 1 liner (P < .0001). Cracks commonly occur in conventional ultra-high-molecular-weight polyethylene liners, often after neck impingement and almost always in association with oxidation of the polymer.",

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author = "Birman, {Michael V.} and Noble, {Philip C.} and Conditt, {Michael A.} and Steve Li and Kenneth Mathis",

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AU - Birman, Michael V.

AU - Noble, Philip C.

AU - Conditt, Michael A.

AU - Li, Steve

AU - Mathis, Kenneth

PY - 2005/10

Y1 - 2005/10

N2 - The purpose of this study was to determine the prevalence of crack formation in conventional ultra-high-molecular-weight polyethylene cups and its association with rim impingement, oxidation, and time in situ. One hundred twenty acetabular cups were retrieved during revision total hip arthroplasty. In 40% (48/120) of the retrieved specimens, multiple subsurface cracks of several millimeters in length were revealed by transillumination. In 5 specimens, full thickness cracks led to fragmentation of the liner before revision. Thirty-eight (32%) liners had regions of moderate to severe impingement damage to the rim; cracks were initiated at the site of impingement in all but 1 liner (P < .0001). Cracks commonly occur in conventional ultra-high-molecular-weight polyethylene liners, often after neck impingement and almost always in association with oxidation of the polymer.

AB - The purpose of this study was to determine the prevalence of crack formation in conventional ultra-high-molecular-weight polyethylene cups and its association with rim impingement, oxidation, and time in situ. One hundred twenty acetabular cups were retrieved during revision total hip arthroplasty. In 40% (48/120) of the retrieved specimens, multiple subsurface cracks of several millimeters in length were revealed by transillumination. In 5 specimens, full thickness cracks led to fragmentation of the liner before revision. Thirty-eight (32%) liners had regions of moderate to severe impingement damage to the rim; cracks were initiated at the site of impingement in all but 1 liner (P < .0001). Cracks commonly occur in conventional ultra-high-molecular-weight polyethylene liners, often after neck impingement and almost always in association with oxidation of the polymer.

KW - Cross-linked polyethylene

KW - Hip arthroplasty

KW - Impingement

KW - Oxidation

KW - Retrieval

KW - Wear

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Cracking and impingement in ultra-high-molecular-weight polyethylene acetabular liners

Abstract

Keywords

ASJC Scopus subject areas

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