Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Hauer, G; Leitner, L; Ackerl, MC; Klim, S; Vielgut, I; Ehall, R; Glehr, M; Leithner, A; Sadoghi, P.
Titanium-Nitride Coating Does Not Result in a Better Clinical Outcome Compared to Conventional Cobalt-Chromium Total Knee Arthroplasty after a Long-Term Follow-Up: A Propensity Score Matching Analysis.
COATINGS. 2020; 10(5): 442
Doi: 10.3390/coatings10050442
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- Führende Autor*innen der Med Uni Graz
- Hauer Georg
- Sadoghi Patrick
- Co-Autor*innen der Med Uni Graz
- Glehr Mathias
- Klim Sebastian Martin
- Leithner Andreas
- Leitner Lukas
- Vielgut Ines
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- Abstract:
- Background: The impact of titanium nitride (TiN) coating on implant components is controversial. TiN coating is proposed as having superior biomechanical properties compared to conventional cobalt-chromium (CoCr) alloy. This study compared long-term clinical data as well as meteoro-sensitivity in patients who underwent total knee arthroplasty (TKA), with either CoCr alloy or TiN coating. Methods: In this retrospective observational study, the clinically approved cemented "low contact stress" (LCS) TKA with conventional CoCr coating, was compared to un-cemented TiN-coated "advanced coated system" (ACS) TKA. Propensity score matching identified comparable patients based on their characteristics in a one-to-one ratio using the nearest-neighbor method. The final cohort comprised 260 knees in each cohort, with a mean follow-up of 10.1 +/- 1.0 years for ACS patients and 14.9 +/- 3.0 years for the LCS group. Physical examinations, meteoro-sensitivity, and knee scoring were assessed. Results: The clinical and functional Knee Society Score (KSS) (82.6 vs. 70.8; p < 0.001 and 61.9 vs. 71.1; p = 0.011), the postoperative Visual Analogue Scale (VAS) (2.9 vs. 1.4; p = 0.002), and the postoperative Tegner Score (2.6 vs. 2.2; p = 0.001) showed significant intergroup differences. The postoperative Western Ontario & McMaster Universities Osteoarthritis Index (WOMAC) was similar (79.9 vs. 81.3; p = 0.453) between groups. Meteoro-sensitivity of the artificial joint was significantly more prevalent in the ACS patient cohort (56% vs. 23%; p < 0.001). Conclusion: This study suggests that TiN coating does not provide improved clinical outcomes in this patient cohort after a long-term follow-up. Interestingly, sensitivity to weather changes were more correlated with un-cemented ACS implants.
- Find related publications in this database (Keywords)
- knee arthroplasty
- functional outcome
- titanium-nitride
- meteoro-sensitivity