Tribocorrosion: Ceramic and Oxidized Zirconium vs Cobalt-Chromium Heads in Total Hip Arthroplasty
| Autor: | James L. Howard, Sok Chuen Tan, Christopher Del Balso, Brent A. Lanting, Matthew G. Teeter, Adrian C.K. Lau |
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| Rok vydání: | 2016 |
| Předmět: |
Male
Ceramics Arthroplasty Replacement Hip Tribocorrosion Oxinium heads Dentistry Body Mass Index Cohort Studies 0302 clinical medicine ceramic heads Medicine and Health Sciences Orthopedics and Sports Medicine 030212 general & internal medicine Ceramic Aged 80 and over 030222 orthopedics Femur Head Cobalt Middle Aged Prosthesis Failure Corrosion medicine.anatomical_structure visual_art visual_art.visual_art_medium Oxinium Female Adult inorganic chemicals oxidized zirconium heads chemistry.chemical_element Fretting Prosthesis Design 03 medical and health sciences Femoral head medicine Humans Aged Zirconium business.industry cobalt-chromium heads Metallurgy taper corrosion chemistry trunnionosis Trunnion Chromium Alloys Hip Prosthesis business |
| Zdroj: | Bone and Joint Institute |
| ISSN: | 0883-5403 |
| DOI: | 10.1016/j.arth.2016.02.027 |
| Popis: | © 2016 Elsevier Inc. Background This matched-cohort study aims to compare tribocorrosion between matched ceramic and cobalt-chromium femoral head trunnions and between matched Oxinium and cobalt-chromium femoral head trunnions. Secondary objectives were to investigate whether taper design, depth of trunnion, implantation time, age, body mass index, and gender have an effect on fretting and corrosion. Methods All hip prostheses retrieved between 1999 and 2015 at one center were reviewed, giving a total of 52 ceramic heads. These were matched to a cobalt-chromium cohort according to taper design, head size, neck length, and implantation time. The trunnions were examined by 2 observers using a 4-point scoring technique and scored in 3 zones: apex, middle, and base. The observers were blinded to clinical and manufacturing data where possible. A separate matched-cohort analysis was performed between 8 Oxinium heads and 8 cobalt-chromium heads, which were similarly scored. Results Ceramic head trunnions demonstrated a lower median fretting and corrosion score at the base zone (P |
| Databáze: | OpenAIRE |
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