Vitamin E-stabilized highly crosslinked polyethylenes: The role and effectiveness in total hip arthroplasty
| Autor: | Kengo Yamamoto, Toshiyuki Tateiwa, Yasuhito Takahashi |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
medicine.medical_specialty
Osteolysis Materials science medicine.medical_treatment Arthroplasty Replacement Hip Aseptic loosening Dentistry 02 engineering and technology Prosthesis Design Clinical success Antioxidants Diffusion 03 medical and health sciences 0302 clinical medicine Postoperative Complications Radiation Ionizing Materials Testing medicine Humans Vitamin E Orthopedics and Sports Medicine 030222 orthopedics business.industry 021001 nanoscience & nanotechnology medicine.disease Arthroplasty Structural evolution First generation Surgery Cross-Linking Reagents Hip Prosthesis Polyethylenes 0210 nano-technology business Total hip arthroplasty Forecasting |
| Zdroj: | Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association. 22(3) |
| ISSN: | 1436-2023 |
| Popis: | Morphology and design of ultra-high molecular weight polyethylene (UHMWPE or simply PE) acetabular components used in total hip arthroplasty (THA) have been evolving for more than half a century. Since the late-1990s, there were two major technological innovations in PE emerged from necessity to overcome the wear-induced periprosthetic osteolysis, i.e., the development of highly crosslinked PEs (HXLPEs). There are many literature reporting that radiation crosslinked and remelted/annealed (first-generation) HXLPEs markedly reduced the incidence of osteolysis and aseptic loosening. Regardless of such clinical success in the first-generation technologies, there were some recent shifts in Japan toward the use of new second-generation HXLPEs subjected to sequential irradiation/annealing or antioxidant vitamin E (α-tocopherol) incorporation. Although the selection rate of first-generation liners still account for more than half of all the PE THAs (∼58% in 2015), the use of vitamin E-stabilized liners has been steadily growing each year since their clinical introduction in 2010. In these contexts, it is of great importance to evaluate and understand the real clinical benefits of using the new second-generation liners as compared to the first generation. This article first summarizes structural evolution and characteristic features of first-generation HXLPEs, and then provides a detailed description of second-generation antioxidant HXLPEs in regard to the role of vitamin E incorporation on their chemical and mechanical performances in THA. |
| Databáze: | OpenAIRE |
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