Influence of Temperature on the Biomechanical Stability of Titanium, PEEK, Poly-L-Lactic Acid, and β–Tricalcium Phosphate Poly-L-Lactic Acid Suture Anchors Tested on Human Humeri In Vitro in a Wet Environment
| Autor: | Matthias F. Pietschmann, Christian Braun, Alexandra Mazur, Björn P. Roßbach, Peter E. Müller, Christian Schröder, Andreas Ficklscherer, Mehmet F. Gülecyüz |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
Calcium Phosphates medicine.medical_specialty Polymers Polyesters chemistry.chemical_element Biocompatible Materials Polyethylene Glycols Rotator Cuff Injuries Benzophenones Rotator Cuff chemistry.chemical_compound Polyether ether ketone Suture (anatomy) Suture Anchors Materials Testing Cadaver Peek Humans Medicine Orthopedics and Sports Medicine Lactic Acid Aged Titanium business.industry Rotator cuff injury Temperature Equipment Design Humerus Ketones Middle Aged medicine.disease Biomechanical Phenomena Surgery Lactic acid Polyester chemistry business Cadaveric spasm Biomedical engineering |
| Zdroj: | Arthroscopy: The Journal of Arthroscopic & Related Surgery. 31:1134-1141 |
| ISSN: | 0749-8063 |
| Popis: | Purpose The purpose of this study was to analyze the biomechanical integrity of suture anchors of different materials (titanium, PEEK [polyether ether ketone], poly-L-lactic acid [PLLA], and β–tricalcium phosphate PLLA) and almost identical design for rotator cuff repair in human humeri positioned in a water bath at room and body temperature undergoing cyclic loading rather than single-pull or static tests. Methods Four different anchor models (n = 6) were tested using healthy human cadaveric humeri in a water bath thermostatically regulated at 20°C and 37°C. A cyclic testing protocol was used. The maximum failure load, the system displacement, and the respective mode of failure were recorded. Results There were no significant differences regarding the maximum failure load values between the 20°C groups and 37°C groups for the 4 different anchor materials. The displacement values for the 20°C groups and 37°C groups also were not statistically significant. Anchor and suture dislocations were the predominant modes of failure; suture ruptures were observed in few cases. Conclusions This study shows that there are no significantly relevant differences regarding the maximum failure loads and the displacement values of the tested suture anchor systems in a wet environment at 20°C or 37°C. The temperature differences do not seem to affect the modes of failure either. Clinical Relevance Titanium, PEEK, PLLA, and β–tricalcium phosphate PLLA suture anchors for rotator cuff repair can be expected—on the basis of this investigation comparing laboratory temperature with body temperature and a wet environment—to perform in vivo similar to in vitro testing. |
| Databáze: | OpenAIRE |
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