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Acetabular Debonding: An Investigation of Porous Coating Delamination in Hip Resurfacing Arthroplasty
Joint Authors
Gaillard-Campbell, Dani M.
Gross, Thomas P.
Robinson, Eric
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-11-01
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Background.
To date, there have been no published investigations on the cause of acetabular debonding, a rare failure phenomenon in metal-on-metal hip resurfacing where the acetabular porous coating delaminates from the implant while remaining well fixed to the pelvic bone.
Purposes.
This study aims to summarize the current understanding of acetabular debonding and to investigate the discrepancy in rate of debonding between two implant systems.
Patients and Methods.
To elucidate potential causes of debonding, we retrospectively analyzed a single-surgeon cohort of 839 hip resurfacing cases.
Specifically, we compared rate of debonding and manufacturing processes between two implant systems.
Results.
Group 1 experienced significantly more cases of debonding than Group 2 cases (4.0% versus 0.0%, p value<0.0001).
Implant manufacturing processes differed in surface coating, heat treatment, postmanufacturing treatment, and apex thickness.
Debonded implants were more likely to have missed RAIL guidelines (p=0.04).
Conclusions.
We identified implant system, postoperative time, and acetabular component placement as variables contributing to rate of debonding.
We recommend minimizing acetabular inclination angle according to RAIL guidelines.
Further, we evaluated manufacturing differences between the two implant systems but did not have access to proprietary data to identify the cause of debonding.
Both implants met ASTM standards, yet only the Group 1 implant debonded.
This suggests the second implant had greater fatigue shear strength.
Because the Group 2 implant achieved a more durable interface that did not debond, we suggest the ASTM F1160 standard for fatigue shear strength be increased to that achieved by its manufacturer.
Level of Evidence II.
A retrospective evaluation of prospectively collected data.
American Psychological Association (APA)
Robinson, Eric& Gaillard-Campbell, Dani M.& Gross, Thomas P.. 2018. Acetabular Debonding: An Investigation of Porous Coating Delamination in Hip Resurfacing Arthroplasty. Advances in Orthopedics،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1122618
Modern Language Association (MLA)
Robinson, Eric…[et al.]. Acetabular Debonding: An Investigation of Porous Coating Delamination in Hip Resurfacing Arthroplasty. Advances in Orthopedics No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1122618
American Medical Association (AMA)
Robinson, Eric& Gaillard-Campbell, Dani M.& Gross, Thomas P.. Acetabular Debonding: An Investigation of Porous Coating Delamination in Hip Resurfacing Arthroplasty. Advances in Orthopedics. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1122618
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122618