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Roesner M, Zankovic S, Kovacs A, Benner M, Barkhoff R, Seidenstuecker M. Mechanical Properties and Corrosion Rate of ZnAg3 as a Novel Bioabsorbable Material for Osteosynthesis. J Funct Biomater 2024; 15:28. [PMID: 38391881 PMCID: PMC10890006 DOI: 10.3390/jfb15020028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/12/2024] [Accepted: 01/20/2024] [Indexed: 02/24/2024] Open
Abstract
Osteosynthesis in fracture treatment typically uses hardware that remains in the patient's body, which brings a permanent risk of negative side effects such as foreign body reactions or chronic inflammation. Bioabsorbable materials, however, can degrade and slowly be replaced by autologous bone tissue. A suitable material is requested to offer great biocompatibility alongside excellent mechanical properties and a reasonable corrosion rate. Zinc-silver alloys provide these characteristics, which makes them a promising candidate for research. This study investigated the aptitude as a bioabsorbable implant of a novel zinc-silver alloy containing 3.3 wt% silver (ZnAg3). Here, the tensile strength as well as the corrosion rate in PBS solution (phosphate buffered solution) of ZnAg3 were assessed. Furthermore, shear tests, including fatigue and quasi-static testing, were conducted with ZnAg3 and magnesium pins (MAGNEZIX®, Syntellix AG, Hannover, Germany), which are already in clinical use. The detected corrosion rate of 0.10 mm/year for ZnAg3 was within the proposed range for bioabsorbable implants. With a tensile strength of 237.5 ± 2.12 MPa and a shear strength of 144.8 ± 13.2 N, ZnAg3 satisfied the mechanical requirements for bioabsorbable implants. The fatigue testing did not show any significant difference between ZnAg3 and magnesium pins, whereas both materials withstood the cyclic loading. Thus, the results support the assumption that ZnAg3 is qualified for further investigation.
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Affiliation(s)
- Maria Roesner
- G.E.R.N. Tissue Replacement, Regeneration & Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center-Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany
| | - Sergej Zankovic
- G.E.R.N. Tissue Replacement, Regeneration & Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center-Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany
| | - Adalbert Kovacs
- Limedion GmbH, Coatings and Surface Analysis, Am Schäferstock 2-4, 68163 Mannheim, Germany
| | - Moritz Benner
- Limedion GmbH, Coatings and Surface Analysis, Am Schäferstock 2-4, 68163 Mannheim, Germany
- Quadralux e.K., Am Schäferstock 2-4, 68163 Mannheim, Germany
| | - Roland Barkhoff
- Quadralux e.K., Am Schäferstock 2-4, 68163 Mannheim, Germany
| | - Michael Seidenstuecker
- G.E.R.N. Tissue Replacement, Regeneration & Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center-Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany
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2
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Chen S, Du T, Zhang H, Qi J, Zhang Y, Mu Y, Qiao A. Methods for improving the properties of zinc for the application of biodegradable vascular stents. BIOMATERIALS ADVANCES 2024; 156:213693. [PMID: 37992478 DOI: 10.1016/j.bioadv.2023.213693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/24/2023]
Abstract
Biodegradable stents can support vessels for an extended period, maintain vascular patency, and progressively degrade once vascular remodeling is completed, thereby reducing the constraints of traditional metal stents. An ideal degradable stent must have good mechanical properties, degradation behavior, and biocompatibility. Zinc has become a new type of biodegradable metal after magnesium and iron, owing to its suitable degradation rate and good biocompatibility. However, zinc's poor strength and ductility make it unsuitable as a vascular stent material. Therefore, this paper reviewed the primary methods for improving the overall properties of zinc. By discussing the mechanical properties, degradation behavior, and biocompatibility of various improvement strategies, we found that alloying is the most common, simple, and effective method to improve mechanical properties. Deformation processing can further improve the mechanical properties by changing the microstructures of zinc alloys. Surface modification is an important means to improve the biological activity, blood compatibility and corrosion resistance of zinc alloys. Meanwhile, structural design can not only improve the mechanical properties of the vascular stents, but also endow the stents with special properties such as negative Poisson 's ratio. Manufacturing zinc alloys with excellent degradation properties, improved mechanical properties and strong biocompatibility and exploring their mechanism of interaction with the human body remain areas for future research.
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Affiliation(s)
- Shiliang Chen
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
| | - Tianming Du
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China.
| | - Hanbing Zhang
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
| | - Jing Qi
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
| | - Yanping Zhang
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
| | - Yongliang Mu
- School of Metallurgy, Northeastern University, Shenyang, China
| | - Aike Qiao
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China.
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Zhao M, Feng S, Hu F, Geng H, Li X, Long Y, Feng W, Chen Z. Corrosion Studies of Temperature-Resistant Zinc Alloy Sacrificial Anodes and Casing Pipe at Different Temperatures. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7120. [PMID: 38005050 PMCID: PMC10672601 DOI: 10.3390/ma16227120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/22/2023] [Accepted: 08/27/2023] [Indexed: 11/26/2023]
Abstract
In order to solve the problem of external corrosion of deep well casing in oil and gas fields, a new type of high-temperature-resistant zinc alloy sacrificial anode material was used. The temperature and corrosion resistance of the new anode material and TP140 casing were investigated by simulating the high-temperature working conditions of a deep well in an oil field using high-temperature and high-pressure corrosion tests and electrochemical tests. The results showed that at 100-120 °C, the corrosion rate of TP140 protected by a sacrificial anode was only one-tenth of that under unprotected conditions, and the minimum corrosion rate of TP140 protected by a sacrificial anode at 100 °C was 0.0089 mm/a. The results of the dynamic potential polarization curve showed that the corresponding corrosion current density of TP140 first increased and then decreased with the increase in temperature. The self-corrosion potential in sacrificial anode materials first increased and then decreased with the increase in temperature, and the potential difference with TP140 gradually decreased.
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Affiliation(s)
- Mifeng Zhao
- Oil and Gas Engineering Research Institute, Tarim Oilfield Company of CNPC, Korla 841000, China; (M.Z.); (S.F.); (F.H.); (H.G.)
| | - Shaobo Feng
- Oil and Gas Engineering Research Institute, Tarim Oilfield Company of CNPC, Korla 841000, China; (M.Z.); (S.F.); (F.H.); (H.G.)
| | - Fangting Hu
- Oil and Gas Engineering Research Institute, Tarim Oilfield Company of CNPC, Korla 841000, China; (M.Z.); (S.F.); (F.H.); (H.G.)
| | - Hailong Geng
- Oil and Gas Engineering Research Institute, Tarim Oilfield Company of CNPC, Korla 841000, China; (M.Z.); (S.F.); (F.H.); (H.G.)
| | - Xuanpeng Li
- State Key Laboratory of Performance and Structural Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, China; (X.L.); (Y.L.)
| | - Yan Long
- State Key Laboratory of Performance and Structural Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, China; (X.L.); (Y.L.)
| | - Wenhao Feng
- State Key Laboratory of Performance and Structural Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, China; (X.L.); (Y.L.)
- Shaanxi Jiuzhou Petroleum Engineering Technical Service Co., Ltd., Xi’an 710075, China
| | - Zihan Chen
- State Key Laboratory of Performance and Structural Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, China; (X.L.); (Y.L.)
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Roesner M, Zankovic S, Kovacs A, Benner M, Barkhoff R, Seidenstuecker M. Biocompatibility Assessment of Zinc Alloys as a New Potential Material for Bioabsorbable Implants for Osteosynthesis. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5224. [PMID: 37569926 PMCID: PMC10419914 DOI: 10.3390/ma16155224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/17/2023] [Accepted: 07/23/2023] [Indexed: 08/13/2023]
Abstract
In the last several years, zinc and its alloys have come into focus as bioabsorbable materials by qualifying themselves with an excellent corrosion rate, mechanical properties, anti-bacterial effects. and considerable biocompatibility. In this study, the biocompatibility of zinc-silver alloys containing 3.3 wt% silver (ZnAg3) was assessed by evaluating their cell viability, the proliferation rate, and the cell toxicity. Two alloys were investigated in which one was phosphated and the other was non-phosphated. The alloys were tested on human osteoblasts (hOb), which are, to a large extent, responsible for bone formation and healing processes. The performance of the phosphated alloy did not differ significantly from the non-phosphated alloy. The results showed a promising biocompatibility with hOb for both alloys equally in all conducted assays, qualifying ZnAg3 for further investigations such as in vivo studies.
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Affiliation(s)
- Maria Roesner
- G.E.R.N. Tissue Replacement, Regeneration & Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center-Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany; (M.R.); (S.Z.)
| | - Sergej Zankovic
- G.E.R.N. Tissue Replacement, Regeneration & Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center-Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany; (M.R.); (S.Z.)
| | - Adalbert Kovacs
- Limedion GmbH, Coatings and Surface Analysis, Am Schäferstock 2-4, 68163 Mannheim, Germany; (A.K.); (M.B.)
| | - Moritz Benner
- Limedion GmbH, Coatings and Surface Analysis, Am Schäferstock 2-4, 68163 Mannheim, Germany; (A.K.); (M.B.)
- Quadralux e.K., Am Schäferstock 2-4, 68163 Mannheim, Germany;
| | - Roland Barkhoff
- Quadralux e.K., Am Schäferstock 2-4, 68163 Mannheim, Germany;
| | - Michael Seidenstuecker
- G.E.R.N. Tissue Replacement, Regeneration & Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center-Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany; (M.R.); (S.Z.)
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5
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Kong L, Heydari Z, Lami GH, Saberi A, Baltatu MS, Vizureanu P. A Comprehensive Review of the Current Research Status of Biodegradable Zinc Alloys and Composites for Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4797. [PMID: 37445111 DOI: 10.3390/ma16134797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/23/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023]
Abstract
Zinc (Zn)-based biodegradable materials show moderate degradation rates in comparison with other biodegradable materials (Fe and Mg). Biocompatibility and non-toxicity also make them a viable option for implant applications. Furthermore, Pure Zn has poor mechanical behavior, with a tensile strength of around 100-150 MPa and an elongation of 0.3-2%, which is far from reaching the strength required as an orthopedic implant material (tensile strength is more than 300 MPa, elongation more than 15%). Alloy and composite fabrication have proven to be excellent ways to improve the mechanical performance of Zn. Therefore, their alloys and composites have emerged as an innovative category of biodegradable materials. This paper summarizes the most important recent research results on the mechanical and biological characteristics of biodegradable Zn-based implants for orthopedic applications and the most commonly added components in Zn alloys and composites.
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Affiliation(s)
- Lingyun Kong
- School of Electronic Information, Xijing University, Xi'an 710123, China
| | - Zahra Heydari
- School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran 1439957131, Iran
| | - Ghadeer Hazim Lami
- Department of Material Engineering, South Tehran Branch, Islamic Azad University, Tehran 1777613651, Iran
| | - Abbas Saberi
- Department of Material Engineering, South Tehran Branch, Islamic Azad University, Tehran 1777613651, Iran
- Department of Biomedical Engineering, Islamic Azad University, South Tehran Branch, Tehran 1777613651, Iran
| | - Madalina Simona Baltatu
- Department of Technologies and Equipments for Materials Processing, Faculty of Materials Science and Engineering, Gheorghe Asachi Technical University of Iaşi, Blvd. Mangeron, No. 51, 700050 Iasi, Romania
| | - Petrica Vizureanu
- Department of Technologies and Equipments for Materials Processing, Faculty of Materials Science and Engineering, Gheorghe Asachi Technical University of Iaşi, Blvd. Mangeron, No. 51, 700050 Iasi, Romania
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Mamrilla W, Molčanová Z, Ballóková B, Džupon M, Džunda R, Csík D, Michalik Š, Lisnichuk M, Saksl K. The Influence of Manganese Addition on the Properties of Biodegradable Zinc-Manganese-Calcium Alloys. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4655. [PMID: 37444969 DOI: 10.3390/ma16134655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023]
Abstract
This study focuses on the preparation and characterization of zinc-based alloys containing magnesium, calcium, and manganese. The alloys were prepared by the melting of pure elements, casting them into graphite molds, and thermo-mechanically treating them via hot extrusion. The phase compositions of the samples were analyzed using X-ray diffraction technique and SEM/EDX analysis. The analysis confirmed that in addition to the Zn matrix, the materials are reinforced by the CaZn13, MgZn2, and Mn-based precipitates. The mechanical properties of the alloys were ascertained by tensile, compressive, and bending tests, measurement of the samples microhardness and elastic modulus. The results indicate that an increase in Mn content leads to an increase in the maximum stress experienced under both tension and compression. However, the plastic deformation of the alloys decreases with increasing Mn content. This study provides valuable insights into the microstructural changes and mechanical behavior of zinc-based alloys containing magnesium, calcium, and manganese, which can be used to design alloys for specific biomedical applications.
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Affiliation(s)
- Wanda Mamrilla
- Department of Biomedical Engineering and Measurement, Faculty of Mechanical Engineering, Technical University of Košice, Letná 9, 040 01 Košice, Slovakia
- Slovak Academic of Science, Institute of Materials Research, Watsonova 47, 040 01 Košice, Slovakia
| | - Zuzana Molčanová
- Slovak Academic of Science, Institute of Materials Research, Watsonova 47, 040 01 Košice, Slovakia
| | - Beáta Ballóková
- Slovak Academic of Science, Institute of Materials Research, Watsonova 47, 040 01 Košice, Slovakia
| | - Miroslav Džupon
- Slovak Academic of Science, Institute of Materials Research, Watsonova 47, 040 01 Košice, Slovakia
| | - Róbert Džunda
- Slovak Academic of Science, Institute of Materials Research, Watsonova 47, 040 01 Košice, Slovakia
| | - Dávid Csík
- Slovak Academic of Science, Institute of Materials Research, Watsonova 47, 040 01 Košice, Slovakia
- Faculty of Materials, Metallurgy and Recycling, Institute of Materials and Quality, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia
| | - Štefan Michalik
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - Maksym Lisnichuk
- Faculty of Science, Institute of Physics, Pavol Jozef Šafárik University in Košice, Park Angelinum 9, 040 01 Košice, Slovakia
| | - Karel Saksl
- Slovak Academic of Science, Institute of Materials Research, Watsonova 47, 040 01 Košice, Slovakia
- Faculty of Materials, Metallurgy and Recycling, Institute of Materials and Quality, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia
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7
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Wątroba M, Bednarczyk W, Szewczyk PK, Kawałko J, Mech K, Grünewald A, Unalan I, Taccardi N, Boelter G, Banzhaf M, Hain C, Bała P, Boccaccini AR. In vitro cytocompatibility and antibacterial studies on biodegradable Zn alloys supplemented by a critical assessment of direct contact cytotoxicity assay. J Biomed Mater Res B Appl Biomater 2023; 111:241-260. [PMID: 36054531 PMCID: PMC10086991 DOI: 10.1002/jbm.b.35147] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 07/11/2022] [Accepted: 07/17/2022] [Indexed: 12/15/2022]
Abstract
In vitro cytotoxicity assessment is indispensable in developing new biodegradable implant materials. Zn, which demonstrates an ideal corrosion rate between Mg- and Fe-based alloys, has been reported to have excellent in vivo biocompatibility. Therefore, modifications aimed at improving Zn's mechanical properties should not degrade its biological response. As sufficient strength, ductility and corrosion behavior required of load-bearing implants has been obtained in plastically deformed Zn-3Ag-0.5Mg, the effect of simultaneous Ag and Mg additions on in vitro cytocompatibility and antibacterial properties was studied, in relation to Zn and Zn-3Ag. Direct cell culture on samples and indirect extract-based tests showed almost no significant differences between the tested Zn-based materials. The diluted extracts of Zn, Zn-3Ag, and Zn-3Ag-0.5Mg showed no cytotoxicity toward MG-63 cells at a concentration of ≤12.5%. The cytotoxic effect was observed only at high Zn2+ ion concentrations and when in direct contact with metallic samples. The highest LD50 (lethal dose killing 50% of cells) of 13.4 mg/L of Zn2+ ions were determined for the Zn-3Ag-0.5Mg. Similar antibacterial activity against Escherichia coli and Staphylococcus aureus was observed for Zn and Zn alloys, so the effect is attributed mainly to the released Zn2+ ions exhibiting bactericidal properties. Most importantly, our experiments indicated the limitations of water-soluble tetrazolium salt-based cytotoxicity assays for direct tests on Zn-based materials. The discrepancies between the WST-8 assay and SEM observations are attributed to the interference of Zn2+ ions with tetrazolium salt, therefore favoring its transformation into formazan, giving false cell viability quantitative results.
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Affiliation(s)
- Maria Wątroba
- Laboratory for Mechanics of Materials and Nanostructures, Empa, Swiss Federal Laboratories for Materials Science and Technology, Thun, Switzerland.,Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow, Poland
| | - Wiktor Bednarczyk
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Piotr K Szewczyk
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow, Poland
| | - Jakub Kawałko
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Krakow, Poland
| | - Krzysztof Mech
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Krakow, Poland
| | - Alina Grünewald
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Irem Unalan
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Nicola Taccardi
- Institute of Chemical Reaction Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Gabriela Boelter
- Institute of Microbiology and Infection and School of Biosciences, University of Birmingham, Birmingham, UK
| | - Manuel Banzhaf
- Institute of Microbiology and Infection and School of Biosciences, University of Birmingham, Birmingham, UK
| | - Caroline Hain
- Laboratory for Mechanics of Materials and Nanostructures, Empa, Swiss Federal Laboratories for Materials Science and Technology, Thun, Switzerland.,Institute for Applied Laser Photonics and Surface Technologies ALPS, Bern University of Applied Sciences, Biel/Bienne, Switzerland
| | - Piotr Bała
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow, Poland.,Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Krakow, Poland
| | - Aldo R Boccaccini
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Erlangen, Germany
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8
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Fixation Performance of Bioabsorbable Zn-6Ag Pins for Osteosynthesis. MATERIALS 2022; 15:ma15093280. [PMID: 35591612 PMCID: PMC9101395 DOI: 10.3390/ma15093280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 04/27/2022] [Accepted: 05/01/2022] [Indexed: 11/17/2022]
Abstract
Bioabsorbable implants have become the focus of the latest research for new bone implant materials. With favorable characteristics such as compatible mechanical characteristics, no long-term side effects, and even osteogenesis enhancing properties they seem to be the future of osteosynthesis. Besides these characteristics, they must perform on the same level as traditional implant materials regarding their mechanical support for bone healing. A particular focus in the research for bioabsorbable implants has been on metal alloys, as these have particularly good mechanical properties such as excellent maximum force and high stability. This study focused on the shear strength of new bioabsorbable zinc and magnesium pins in comparison to traditional implants such as K-wires and cancellous bone screws in bone-implant connections. During quasi-static and fatigue loading experiments, magnesium pins (MAGNEZIX, Syntellix AG, Hannover, Germany) and new zinc silver pins (Zn-6Ag) by Limedion (Limedion GmbH., Mannheim, Germany) were compared with conventional osteosynthetic materials. The pins made of the new bioabsorbable alloys withstood the cyclic loads to the same extent as the conventional osteosynthesis materials. In the quasi-static loading, it was shown that the novel Zn-6Ag from Limedion has the same shear strength as the magnesium pin from Syntellix, which is already in clinical use. In addition, the zinc pin showed significantly better shear strength compared to osteosynthesis with K-wires (p < 0.05).
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9
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Liu WC, Chang CH, Chen CH, Lu CK, Ma CH, Huang SI, Fan WL, Shen HH, Tsai PI, Yang KY, Fu YC. 3D-Printed Double-Helical Biodegradable Iron Suture Anchor: A Rabbit Rotator Cuff Tear Model. MATERIALS 2022; 15:ma15082801. [PMID: 35454494 PMCID: PMC9027822 DOI: 10.3390/ma15082801] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/07/2022] [Accepted: 04/07/2022] [Indexed: 12/16/2022]
Abstract
Suture anchors are extensively used in rotator cuff tear surgery. With the advancement of three-dimensional printing technology, biodegradable metal has been developed for orthopedic applications. This study adopted three-dimensional-printed biodegradable Fe suture anchors with double-helical threads and commercialized non-vented screw-type Ti suture anchors with a tapered tip in the experimental and control groups, respectively. The in vitro study showed that the Fe and Ti suture anchors exhibited a similar ultimate failure load in 20-pound-per-cubic-foot polyurethane foam blocks and rabbit bone. In static immersion tests, the corrosion rate of Fe suture anchors was 0.049 ± 0.002 mm/year. The in vivo study was performed on New Zealand white rabbits and SAs were employed to reattach the ruptured supraspinatus tendon. The in vivo ultimate failure load of the Fe suture anchors was superior to that of the Ti suture anchors at 6 weeks. Micro-computed tomography showed that the bone volume fraction and bone surface density in the Fe suture anchors group 2 and 6 weeks after surgery were superior, and the histology confirmed that the increased bone volume around the anchor was attributable to mineralized osteocytes. The three-dimensional-printed Fe suture anchors outperformed the currently used Ti suture anchors.
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Affiliation(s)
- Wen-Chih Liu
- Ph.D. Program in Biomedical Engineering, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan; (W.-C.L.); (C.-H.C.)
- Department Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Orthopedic Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chih-Hau Chang
- Division of Plastic Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan;
| | - Chung-Hwan Chen
- Ph.D. Program in Biomedical Engineering, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan; (W.-C.L.); (C.-H.C.)
- Department Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Orthopedic Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Graduate Institute of Animal Vaccine Technology, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912301, Taiwan
- Department of Orthopedic Surgery, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
- Department of Healthcare Administration and Medical Informatics, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 80420, Taiwan
| | - Chun-Kuan Lu
- Department of Orthopedic Surgery, Park One International Hospital, Kaohsiung 81367, Taiwan;
| | - Chun-Hsien Ma
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu 31057, Taiwan; (C.-H.M.); (S.-I.H.); (W.-L.F.); (H.-H.S.); (P.-I.T.)
| | - Shin-I Huang
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu 31057, Taiwan; (C.-H.M.); (S.-I.H.); (W.-L.F.); (H.-H.S.); (P.-I.T.)
| | - Wei-Lun Fan
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu 31057, Taiwan; (C.-H.M.); (S.-I.H.); (W.-L.F.); (H.-H.S.); (P.-I.T.)
| | - Hsin-Hsin Shen
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu 31057, Taiwan; (C.-H.M.); (S.-I.H.); (W.-L.F.); (H.-H.S.); (P.-I.T.)
| | - Pei-I Tsai
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu 31057, Taiwan; (C.-H.M.); (S.-I.H.); (W.-L.F.); (H.-H.S.); (P.-I.T.)
| | - Kuo-Yi Yang
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu 31057, Taiwan; (C.-H.M.); (S.-I.H.); (W.-L.F.); (H.-H.S.); (P.-I.T.)
- Correspondence: (K.-Y.Y.); (Y.-C.F.)
| | - Yin-Chih Fu
- Ph.D. Program in Biomedical Engineering, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan; (W.-C.L.); (C.-H.C.)
- Department Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Orthopedic Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Division of Plastic Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan;
- Department of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: (K.-Y.Y.); (Y.-C.F.)
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