Blood metal ions after hybrid metal-on-polyethylene Exeter−Trident total hip replacement
| Autor: | Pete Craig, Simon G Collier, Phillip Shaylor, Gopikanthan Manoharan, Rohit Singh, Ashok Sinha |
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| Rok vydání: | 2015 |
| Předmět: |
Chromium
Male medicine.medical_specialty Arthroplasty Replacement Hip Metal ions in aqueous solution Total hip replacement chemistry.chemical_element Prosthesis Design 03 medical and health sciences Femoral head 0302 clinical medicine medicine Exeter Humans Orthopedics and Sports Medicine 030212 general & internal medicine Aged Ions 030222 orthopedics Hip Metal business.industry Radiochemistry Femur Head Cobalt Hybrid Surgery medicine.anatomical_structure England chemistry Polyethylene Trident Orthopedic surgery Metal on polyethylene Trunnion Original Article Female Hip Prosthesis business |
| Zdroj: | Journal of Orthopaedics and Traumatology : Official Journal of the Italian Society of Orthopaedics and Traumatology |
| ISSN: | 1590-9999 1590-9921 |
| DOI: | 10.1007/s10195-015-0369-4 |
| Popis: | Background Metal-on-metal total hip replacements (THRs) with large femoral heads have been associated with elevated levels of cobalt (Co) and chromium (Cr), which have been attributed to high levels of wear at the articular surface. Our unit recently published data showing a significant increase in the mean levels of Co ions in patients with a 36-mm diameter femoral head with the metal-on-polyethylene Trident−Accolade system. The aim of this study is to assess the levels of Co and Cr in the Exeter−Trident hybrid system, as similar findings would raise concern over the V40 taper trunnion. Materials and methods The study included 83 patients (45 male and 38 female with a mean age of 75.6 years) who received Exeter−Trident hybrid metal-on-polyethylene THRs. The patients were then divided into two groups according to the diameter of the femoral head used—38 patients in the 28-mm group (control), and 45 in the 36-mm (experimental) group. Serum levels of blood Co and Cr were analysed for all recruited patients. Results In the control group (28-mm femoral head) all Co and Cr values were normal (under the abnormal threshold), as were the experimental group (36-mm femoral head). The data values were below |
| Databáze: | OpenAIRE |
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