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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Lachiewicz, Paul F. Soileau, Elizabeth S. |
| Description | Country affiliation: United States Author Affiliation: Lachiewicz PF ( Chapel Hill Orthopedics Surgery and Sports Medicine, 101 Conner Drive, Suite 200, Chapel Hill, NC 27514, USA. paul_lachiewicz@hotmail.com) |
| Abstract | UNLABELLED: Although porous-coated hemispherical components are usually successful in acetabular revisions, the rate of failure is increased in hips with severe bone loss. Tantalum acetabular implants are characterized by higher friction, higher porosity, and greater osteoconductivity than titanium mesh or chrome-cobalt beads. We asked whether these components would provide stable short-term fixation without radiographic loosening in revisions at higher risk for failure. We prospectively followed 37 patients (39 hips) who had an acetabular revision with tantalum acetabular components. The minimum followup time was 2 years (mean, 3.3 years; range, 2-7 years). The acetabular defects were classified as Paprosky et al. Type 3 in 26, Type 2 in 11, and Type 1 in two hips. The mean postoperative Harris hip score was 86. Thirty-eight of the 39 (97%) tantalum components were radiographically well fixed. There was one mechanical failure at 6 months, rerevised with a larger tantalum component. Bone ingrowth was apparent in 38 hips and four hips had a radiolucent line. There were six other reoperations, three recurrent dislocations (constrained liners leaving the shell in place), two infections that seeded to the hip from elsewhere and treated with drainage, and one supracondylar femur fracture, but the tantalum component was left in place. Tantalum acetabular components provide stable fixation in difficult acetabular revisions. LEVEL OF EVIDENCE: Level IV, case series. See Guidelines for Authors for a complete description of levels of evidence. |
| File Format | HTM / HTML |
| ISSN | 0009921X |
| e-ISSN | 15281132 |
| DOI | 10.1007/s11999-009-0940-5 |
| Journal | Clinical Orthopaedics and Related Researchtextregistered |
| Issue Number | 2 |
| Volume Number | 468 |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2010-02-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Discipline Orthopaedics Acetabulum Surgery Arthroplasty, Replacement, Hip Instrumentation Coated Materials, Biocompatible Hip Joint Hip Prosthesis Tantalum Adverse Effects Friction Physiopathology Dislocations Etiology Prevention & Control Joint Instability Pain Pain Measurement Porosity Prospective Studies Prosthesis Design Prosthesis Failure Radiography Recovery Of Function Reoperation Stress, Mechanical Surface Properties Time Factors |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Surgery Sports Science |
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