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https://hdl.handle.net/2440/60809
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Type: | Journal article |
Title: | Second-generation highly cross-linked X3™ polyethylene wear: A preliminary radiostereometric analysis study |
Other Titles: | Second-generation highly cross-linked X3(TM) polyethylene wear: A preliminary radiostereometric analysis study |
Author: | Campbell, D. Field, J. Callary, S. |
Citation: | Clinical Orthopaedics and Related Research, 2010; 468(10):2704-2709 |
Publisher: | Lippincott Williams & Wilkins |
Issue Date: | 2010 |
ISSN: | 0009-921X 1528-1132 |
Statement of Responsibility: | David G. Campbell, John R. Field and Stuart A. Callary |
Abstract: | Background: First-generation highly cross-linked polyethylene liners have reduced the incidence of wear particle-induced osteolysis. However, failed acetabular liners have shown evidence of surface cracking, mechanical failure, and oxidative damage. This has led to the development of second-generation highly cross-linked polyethylene, which has improved wear and mechanical properties and resistance to oxidation in vitro. Owing to its recent introduction, there are no publications describing its clinical performance. Questions/purposes: We assessed early clinical wear of a second-generation highly cross-linked polyethylene liner and compared its clinical performance with the published results of hip simulator tests and with first-generation highly cross-linked polyethylene annealed liners. Patients and Methods: Twenty-one patients were enrolled in a prospective cohort study. Clinical outcome and femoral head penetration were measured for 19 patients at 6 months and 1 and 2 years postoperatively. Results: The median proximal head penetration was 0.009 mm and 0.024 mm at 1 and 2 years, respectively. The median two-dimensional (2-D) head penetration was 0.083 mm and 0.060 mm at 1 and 2 years, respectively. The median proximal wear rate between 1 and 2 years was 0.015 mm/year. Conclusions: The wear rate calculated was similar to the in vitro wear rate reported for this material; however, it was less than the detection threshold for this technique. Although longer followup is required for wear to reach a clinically quantifiable level, this low level of wear is encouraging for the future clinical performance of this material. |
Keywords: | Hip Joint Humans Osteoarthritis, Hip Prosthesis Failure Polyethylene Radiography Range of Motion, Articular Treatment Outcome Arthroplasty, Replacement, Hip Prospective Studies Prosthesis Design Hip Prosthesis Recovery of Function Surface Properties Stress, Mechanical Gamma Rays Time Factors Aged Middle Aged South Australia Female Male |
Rights: | © The Association of Bone and Joint Surgeons ® 2010 |
DOI: | 10.1007/s11999-010-1259-y |
Published version: | http://dx.doi.org/10.1007/s11999-010-1259-y |
Appears in Collections: | Aurora harvest 5 Orthopaedics and Trauma publications |
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