aseptic loosening bone ingrowth porous tantalum components
While first generation porous coatings have had clinical success, aseptic loosening remains a leading cause of revision. The purpose of this study was to investigate the reasons for revision and to assess the amount of bone ingrowth in retrieved porous tantalum components. In a prospective multicenter retrieval program, 76 porous tantalum acetabular shells, 5 femoral stems, 7 patellas and 36 tibial trays were collected from revision surgeries. A subset of the implants was analyzed for bone ingrowth. The main reason for revision was infection for acetabular shells (1.4years implantation time) and instability for tibial trays (1.8years implantation time). Two of the thirty primary surgery acetabular shells and one of the thirty-six primary surgery tibial trays were revised for implant loosening. We observed full depth penetration of bone into the porous tantalum layer for the acetabular shells and femoral stems.
Bone Ingrowth in Well-Fixed Retrieved Porous Tantalum Implants
Creators
Josa A. Hanzlik - Drexel University
Judd S. Day - Exponent
Acknowledged Contributors: Ingrowth Retrieval Study Group
Steven M Kurtz - School of Biomedical Engineering, Science, and Health Systems (1997-)
Publication Details
The Journal of arthroplasty, v 28(6), pp 922-927
Publisher
Elsevier
Grant note
Stelkast, Inc.
Stryker Orthopaedics, Inc.
R01 AR47904 / National Institutes of Health (NIAMS)
Zimmer, Inc.
Wilbert J. Austin Professor of Engineering Chair (CMR)
Resource Type
Journal article
Language
English
Academic Unit
College of Medicine; School of Biomedical Engineering, Science, and Health Systems
Web of Science ID
WOS:000319846400010
Scopus ID
2-s2.0-84878212668
Other Identifier
991019176797304721
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