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Uklejewski R, Winiecki M, Dąbrowski M, Rogala P. Towards the First Generation of Biomimetic Fixation for Resurfacing Arthroplasty Endoprostheses. Biomimetics (Basel) 2024; 9:99. [PMID: 38392145 PMCID: PMC10887084 DOI: 10.3390/biomimetics9020099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/21/2024] [Accepted: 02/06/2024] [Indexed: 02/24/2024] Open
Abstract
This paper presents advances in designs of resurfacing arthroplasty endoprostheses that occurred through their historical generations. The critical characteristics of contemporary generation hip resurfacing arthroplasty endoprostheses are given and the failures resulting from the specific generation cemented and short stem fixation of the femoral component are reviewed. On the background of these failures, the critical need arises for an alternative approach to the fixation of components of resurfacing arthroplasty leading towards the first generation of biomimetic fixation for resurfacing arthroplasty endoprostheses. The state of the art of the completed bioengineering research on the first biomimetic fixation for resurfacing arthroplasty endoprostheses is presented. This new design type of completely cementless and stemless resurfacing arthroplasty endoprostheses of the hip joint (and other joints), where endoprosthesis components are embedded in the surrounding bone via the prototype biomimetic multi-spiked connecting scaffold (MSC-Scaffold), initiates the first at all generations of biomimetic endoprostheses of diarthrodial joints.
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Affiliation(s)
- Ryszard Uklejewski
- Department of Constructional Materials and Biomaterials, Faculty of Materials Engineering, Kazimierz Wielki University, Jan Karol Chodkiewicz Street 30, 85-064 Bydgoszcz, Poland
| | - Mariusz Winiecki
- Department of Constructional Materials and Biomaterials, Faculty of Materials Engineering, Kazimierz Wielki University, Jan Karol Chodkiewicz Street 30, 85-064 Bydgoszcz, Poland
| | - Mikołaj Dąbrowski
- Adult Spine Orthopaedics Department, Wiktor Dega Orthopaedic and Rehabilitation Clinical Hospital, Poznan University of Medical Sciences, 28 Czerwca 1956 Street 135/147, 61-545 Poznan, Poland
| | - Piotr Rogala
- Institute of Health Sciences, Hipolit Cegielski State College of Higher Education, Card. Stefan Wyszyński Street 38, 62-200 Gniezno, Poland
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Subchondral Bone Relative Area and Density in Human Osteoarthritic Femoral Heads Assessed with Micro-CT before and after Mechanical Embedding of the Innovative Multi-Spiked Connecting Scaffold for Resurfacing THA Endoprostheses: A Pilot Study. J Clin Med 2021; 10:jcm10132937. [PMID: 34208953 PMCID: PMC8268800 DOI: 10.3390/jcm10132937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 12/19/2022] Open
Abstract
The multi-spiked connecting scaffold (MSC-Scaffold) prototype is the essential innovation in the fixation of components of resurfacing total hip arthroplasty (THRA) endoprostheses in the subchondral trabecular bone. We conducted the computed micro-tomography (micro-CT) assessment of the subchondral trabecular bone microarchitecture before and after the MSC-Scaffold embedding in femoral heads removed during long-stem endoprosthesis total hip arthroplasty (THA) of different bone densities from 4 patients with hip osteoarthritis (OA). The embedding of the MSC-Scaffold in subchondral trabecular bone causes the change in its relative area (BA/TA, bone area/total area ratio) ranged from 18.2% to 24.7% (translating to the calculated density ρB relative change 11.1–14.4%, and the compressive strength S relative change 75.3–122.7%) regardless of its initial density (before the MSC-Scaffold embedding). The densification of the trabecular microarchitecture of subchondral trabecular bone due to the MSC-Scaffold initial embedding gradually decreases with the increasing distance from the apexes of the MSC-Scaffold’s spikes while the spatial extent of this subchondral trabecular bone densification ranged from 1.5 to 2.5 mm (which is about half the height of the MSC-Scaffold’s spikes). It may be suggested, despite the limited number of examined femoral heads, that: (1) the magnitude of the effect of the MSC-Scaffold embedding on subchondral trabecular bone densification may be a factor contributing to the maintenance of the MSC-Scaffold also for decreased initial bone density values, (2) the deeper this effect of the subchondral trabecular bone densification, the better strength of subchondral trabecular bone, and as consequence, the better post-operative embedding of the MSC-Scaffold in the bone should be expected.
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Bone Density Micro-CT Assessment during Embedding of the Innovative Multi-Spiked Connecting Scaffold in Periarticular Bone to Elaborate a Validated Numerical Model for Designing Biomimetic Fixation of Resurfacing Endoprostheses. MATERIALS 2021; 14:ma14061384. [PMID: 33809176 PMCID: PMC8000753 DOI: 10.3390/ma14061384] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/26/2021] [Accepted: 03/09/2021] [Indexed: 11/21/2022]
Abstract
Our team has been working for some time on designing a new kind of biomimetic fixation of resurfacing endoprostheses, in which the innovative multi-spiked connecting scaffold (MSC-Scaffold) that mimics the natural interface between articular cartilage and periarticular trabecular bone in human joints is the crucial element. This work aimed to develop a numerical model enabling the design of the considered joint replacement implant that would reflect the mechanics of interacting biomaterials. Thus, quantitative micro-CT analysis of density distribution in bone material during the embedding of MSC-Scaffold in periarticular bone was applied. The performed numerical studies and corresponding mechanical tests revealed, under the embedded MSC-Scaffold, the bone material densification affecting its mechanical properties. On the basis of these findings, the built numerical model was modified by applying a simulated insert of densified bone material. This modification led to a strong correlation between the re-simulation and experimental results (FVU = 0.02). The biomimetism of the MSC-Scaffold prototype that provided physiological load transfer from implant to bone was confirmed based on the Huber–von Mises–Hencky (HMH) stress maps obtained with the validated finite element (FE) model of the problem. The micro-CT bone density assessment performed during the embedding of the MSC-Scaffold prototype in periarticular bone provides insight into the mechanical behaviour of the investigated implant-bone system and validates the numerical model that can be used for the design of material and geometric features of a new kind of resurfacing endoprostheses fixation.
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Native Osseous CaP Biomineral Coating on a Biomimetic Multi-Spiked Connecting Scaffold Prototype for Cementless Resurfacing Arthroplasty Achieved by Combined Electrochemical Deposition. MATERIALS 2019; 12:ma12233994. [PMID: 31810185 PMCID: PMC6927003 DOI: 10.3390/ma12233994] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/22/2019] [Accepted: 11/27/2019] [Indexed: 11/29/2022]
Abstract
The multi-spiked connecting scaffold (MSC-Scaffold) prototype with spikes mimicking the interdigitations of articular subchondral bone is an essential innovation in surgically initiated fixation of resurfacing arthroplasty (RA) endoprosthesis components. This paper aimed to present a determination of the suitable range of conditions for the calcium phosphate (CaP) potentiostatic electrochemical deposition (ECDV=const) on the MSC-Scaffold prototype spikes to achieve a biomineral coating with a native Ca/P ratio. The CaP ECDV=const process on the MSC-Scaffold Ti4Al6V pre-prototypes was investigated for potential VECDfrom −9 to −3 V, and followed by 48 h immersion in a simulated body fluid. An acid–alkaline pretreatment (AAT) was applied for a portion of the pre-prototypes. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) studies of deposited coatings together with coatings weight measurements were performed. Themost suitable VECD range, from −5.25 to −4.75 V, was determined as the native biomineral Ca/P ratio of coatings was achieved. AAT increases the weight of deposited coatings (44% for VECD = −5.25 V, 9% for VECD = −5.00 V and 15% for VECD = −4.75 V) and the coverage degree of the lateral spike surfaces (40% for VECD = −5.25 V, 14% for VECD = −5.00 V and 100% for VECD = −4.75 V). XRD confirmed that the multiphasic CaP coating containing crystalline octacalcium phosphate is produced on the lateral surface of the spikes of the MSC-Scaffold. ECDV=const preceded by AAT prevents micro-cracks on the bone-contacting surfaces of the MSC-Scaffold prototype, increases its spikes’ lateral surface coverage, and results in the best modification effect at VECD = −5.00 V. To conclude, the biomimetic MSC-Scaffold prototype with desired biomineral coating of native Ca/P ratio was obtained for cementless RA endoprostheses.
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Rogala P, Uklejewski R, Winiecki M, Dąbrowski M, Gołańczyk J, Patalas A. First Biomimetic Fixation for Resurfacing Arthroplasty: Investigation in Swine of a Prototype Partial Knee Endoprosthesis. BIOMED RESEARCH INTERNATIONAL 2019; 2019:6952649. [PMID: 31355275 PMCID: PMC6634287 DOI: 10.1155/2019/6952649] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 04/10/2019] [Accepted: 05/21/2019] [Indexed: 02/05/2023]
Abstract
Resurfacing hip and knee endoprostheses are generally embedded in shallow, prepared areas in the bone and secured with cement. Massive cement penetration into periarticular bone, although it provides sufficient primary fixation, leads to the progressive weakening of peri-implant bone and results in failures. The aim of this paper was to investigate in an animal model the first biomimetic fixation of components of resurfacing arthroplasty endoprostheses by means of the innovative multispiked connecting scaffold (MSC-Scaffold). The partial resurfacing knee arthroplasty (RKA) endoprosthesis working prototype with the MSC-Scaffold was designed for biomimetic fixation investigations using reverse engineering methods and manufactured by selective laser melting. After Ca-P surface modification of bone contacting surfaces of the MSC-Scaffold, the working prototypes were implanted in 10 swines. Radiological, histopathological, and micro-CT examinations were performed on retrieved bone-implant specimens. Clinical examination confirmed very good stability (4 in 5-point Likert scale) of the operated knee joints. Radiological examinations showed good implant fixation (radiolucency less than 2 mm) without any signs of migration. Spaces between the MSC-Scaffold spikes were penetrated by bone tissue. The histological sections showed newly formed trabecular bone tissue between the spikes, and the trabeculae of periscaffold bone were seen in contact with the spikes. The micro-CT results showed the highest percentage of bone tissue ingrowths into the MSC-Scaffold at a distance of 2.5÷3.0 mm from the spikes bases. The first biomimetic fixation for resurfacing arthroplasty was successfully verified in 10 swines investigations using RKA endoprosthesis working prototypes. The performed research shows that the MSC-Scaffold allows for cementless and biomimetic fixation of resurfacing endoprosthesis components in periarticular cancellous bone.
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Affiliation(s)
- Piotr Rogala
- Department of Orthopaedics and Traumatology, W. Dega University Hospital, Poznan University of Medical Sciences, 28 Czerwca 1956 Street 135/147, 61-545 Poznan, Poland
- Institute of Health Sciences, Hipolit Cegielski State College of Higher Education, Card. Stefan Wyszyński Street 38, 62-200 Gniezno, Poland
- Veterinary Surgery Department, Naramowicka Street 68, 61-619 Poznań, Poland
| | - Ryszard Uklejewski
- Institute of Health Sciences, Hipolit Cegielski State College of Higher Education, Card. Stefan Wyszyński Street 38, 62-200 Gniezno, Poland
- Department of Medical Bioengineering Fundamentals, Institute of Technology, Kazimierz Wielki University, Karol Chodkiewicz Street 30, 85-064 Bydgoszcz, Poland
- Department of Technology Design/Laboratory of Bone Implants Research and Design, Institute of Mechanical Technology, Poznan University of Technology, Piotrowo Street 3, 60-965 Poznan, Poland
| | - Mariusz Winiecki
- Department of Medical Bioengineering Fundamentals, Institute of Technology, Kazimierz Wielki University, Karol Chodkiewicz Street 30, 85-064 Bydgoszcz, Poland
- Department of Technology Design/Laboratory of Bone Implants Research and Design, Institute of Mechanical Technology, Poznan University of Technology, Piotrowo Street 3, 60-965 Poznan, Poland
| | - Mikołaj Dąbrowski
- Department of Orthopaedics and Traumatology, W. Dega University Hospital, Poznan University of Medical Sciences, 28 Czerwca 1956 Street 135/147, 61-545 Poznan, Poland
- Department of Spondyloorthopaedics and Biomechanics, W. Dega University Hospital, Poznan University of Medical Sciences, 28 Czerwca 1956 Street 135/147, 61-545 Poznan, Poland
| | - Jacek Gołańczyk
- Veterinary Surgery Department, Naramowicka Street 68, 61-619 Poznań, Poland
| | - Adam Patalas
- Department of Technology Design/Laboratory of Bone Implants Research and Design, Institute of Mechanical Technology, Poznan University of Technology, Piotrowo Street 3, 60-965 Poznan, Poland
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Narra SP, Mittwede PN, DeVincent Wolf S, Urish KL. Additive Manufacturing in Total Joint Arthroplasty. Orthop Clin North Am 2019; 50:13-20. [PMID: 30477702 PMCID: PMC6555404 DOI: 10.1016/j.ocl.2018.08.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Additive manufacturing (AM) has demonstrated the potential to revolutionize manufacturing for various applications across the medical, aerospace, automobile, and energy sectors. It is a layer-by-layer manufacturing process in which the computer-aided design model is sliced into layers and each layer is deposited successively to realize the final product. This article provides a general overview of AM and discusses current state-of-the-art AM methodologies as they apply to total joint arthroplasty. Specifically, details on their applications and current challenges are summarized to provide orthopedic surgeons with a basic understanding of current and potential applications of AM in total joint arthroplasty.
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Affiliation(s)
- Sneha Prabha Narra
- NextManufacturing Center, College of Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA,Corresponding author.
| | - Peter N. Mittwede
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 3471 Fifth Avenue, Suite 1010, Pittsburgh, PA 15213, USA
| | - Sandra DeVincent Wolf
- NextManufacturing Center, College of Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA
| | - Kenneth L. Urish
- Department of Orthopaedic Surgery, Arthritis and Arthroplasty Design Group, Magee-Womens Hospital, University of Pittsburgh School of Medicine, 300 Halket Street, Pittsburgh, PA 15213, USA,The Bone and Joint Center, Magee-Womens Hospital, University of Pittsburgh School of Medicine, 300 Halket Street, Pittsburgh, PA 15213, USA
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Uklejewski R, Winiecki M, Patalas A, Rogala P. Numerical studies of the influence of various geometrical features of a multispiked connecting scaffold prototype on mechanical stresses in peri-implant bone. Comput Methods Biomech Biomed Engin 2018; 21:541-547. [PMID: 30396280 DOI: 10.1080/10255842.2018.1480759] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The multispiked connecting scaffold (MSC-scaffold) prototype is an essential innovation in the fixation of components of resurfacing arthroplasty (RA) endoprostheses, providing their entirely non-cemented and bone-tissue-preserving fixation in peri-articular bone. An FE study is proposed to evaluate the influence of geometrical features of the MSC-scaffold on the transfer of mechanical load in peri-implant bone. For this study, an FE model of Ti-Alloy MSC-scaffold prototype embedded in a bilinear elastic, transversely isotropic bone material was built. For the compressive load on the MSC-scaffold, maps of Huber-Mises-Hencky (HMH) stress in peri-implant bone were determined. The influence of the distance between the bases of neighbouring spikes, the apex angle of spikes, and the height of the spherical cup of spikes of the MSC-scaffold were analysed. It was found that the changes in the distance between the bases of neighbouring spikes from 0.2 to 0.5 mm cause the HMH stress to increase in bone material by 32%. The changes of the apex angle of spikes from 2° to 4° decrease the HMH stress in bone material by 39%. The changes of height of the spherical cup of spikes from 0 to 0.12 mm increase the HMH stress in bone material by 24%. In conclusion, the spikes' apex angle and the distance between the bases of spikes of the MSC-scaffold are the key geometrical features determining the appropriate MSC-scaffold prototype design. The built FE model was found to be useful in bioengineering design of the novel fixation system for RA endoprostheses by means of the MSC-scaffold.
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Affiliation(s)
- Ryszard Uklejewski
- a Department of Medical Bioengineering Fundamentals , Institute of Technology, Kazimierz Wielki University , Karola Chodkiewicza Street 30 , 85-064 Bydgoszcz , Poland .,b Department of Technology Design/Laboratory of Bone Implants Research and Design , Institute of Mechanical Technology, Poznan University of Technology , Piotrowo Street 3 , 60-965 Poznan , Poland
| | - Mariusz Winiecki
- a Department of Medical Bioengineering Fundamentals , Institute of Technology, Kazimierz Wielki University , Karola Chodkiewicza Street 30 , 85-064 Bydgoszcz , Poland .,b Department of Technology Design/Laboratory of Bone Implants Research and Design , Institute of Mechanical Technology, Poznan University of Technology , Piotrowo Street 3 , 60-965 Poznan , Poland
| | - Adam Patalas
- b Department of Technology Design/Laboratory of Bone Implants Research and Design , Institute of Mechanical Technology, Poznan University of Technology , Piotrowo Street 3 , 60-965 Poznan , Poland
| | - Piotr Rogala
- c Department of Orthopaedics and Traumatology , W. Dega University Hospital, Poznan University of Medical Sciences , 28 Czerwca 1956 Street 135/147 , 61-545 Poznan , Poland
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Stana J, Stergar J, Gradišnik L, Flis V, Kargl R, Fröhlich E, Stana Kleinschek K, Mohan T, Maver U. Multilayered Polysaccharide Nanofilms for Controlled Delivery of Pentoxifylline and Possible Treatment of Chronic Venous Ulceration. Biomacromolecules 2017; 18:2732-2746. [DOI: 10.1021/acs.biomac.7b00523] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jan Stana
- Schön Klinik Vogtareuth, Department of Vascular
and Endovascular Surgery, Krankenhausstraße 20, 83569 Vogtareuth, Germany
| | - Janja Stergar
- University of Maribor, Faculty of Medicine, Institute
of Biomedical Sciences, Taborska ulica 8, SI-2000 Maribor, Slovenia
| | - Lidija Gradišnik
- University of Maribor, Faculty of Medicine, Institute
of Biomedical Sciences, Taborska ulica 8, SI-2000 Maribor, Slovenia
| | - Vojko Flis
- University Medical Centre Maribor, Division of Surgery,
Department of Vascular Surgery, Ljubljanka ulica 5, SI-2000 Maribor, Slovenia
| | - Rupert Kargl
- University of Maribor, Faculty of Mechanical Engineering,
Laboratory for Characterisation and Processing of Polymers, Smetanova 17, SI-2000 Maribor, Slovenia
| | - Eleonore Fröhlich
- Medical University of Graz, Center for Medical Research,
Core Facility Microscopy, Stiftingtalstraße 24, 8010 Graz, Austria
| | - Karin Stana Kleinschek
- University of Maribor, Faculty of Mechanical Engineering,
Laboratory for Characterisation and Processing of Polymers, Smetanova 17, SI-2000 Maribor, Slovenia
| | - Tamilselvan Mohan
- University of Graz, Institute of Chemistry, Heinrichstrasse 28, 8010 Graz, Austria
| | - Uroš Maver
- University of Maribor, Faculty of Medicine, Institute
of Biomedical Sciences, Taborska ulica 8, SI-2000 Maribor, Slovenia
- University of Maribor, Faculty of Medicine, Department
of Pharmacology, Taborska
ulica 8, SI-2000 Maribor, Slovenia
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Structural-Geometric Functionalization of the Additively Manufactured Prototype of Biomimetic Multispiked Connecting Ti-Alloy Scaffold for Entirely Noncemented Resurfacing Arthroplasty Endoprostheses. Appl Bionics Biomech 2017; 2017:5638680. [PMID: 28785159 PMCID: PMC5530447 DOI: 10.1155/2017/5638680] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 05/31/2017] [Indexed: 11/17/2022] Open
Abstract
The multispiked connecting scaffold (MSC-Scaffold) prototype, inspired by the biological system of anchorage of the articular cartilage in the periarticular trabecular bone by means of subchondral bone interdigitations, is the essential innovation in fixation of the bone in resurfacing arthroplasty (RA) endoprostheses. The biomimetic MSC-Scaffold, due to its complex geometric structure, can be manufactured only using additive technology, for example, selective laser melting (SLM). The major purpose of this work is determination of constructional possibilities for the structural-geometric functionalization of SLM-manufactured MSC-Scaffold prototype, compensating the reduced ability-due to the SLM technological limitations-to accommodate the ingrowing bone filling the interspike space of the prototype, which is important for the prototype bioengineering design. Confocal microscopy scanning of components of the SLM-manufactured prototype of total hip resurfacing arthroplasty (THRA) endoprosthesis with the MSC-Scaffold was performed. It was followed by the geometric measurements of a variety of specimens designed as the fragments of the MSC-Scaffold of both THRA endoprosthesis components. The reduced ability to accommodate the ingrowing bone tissue in the SLM-manufactured prototypes versus that in the corresponding CAD models has been quantitatively determined. Obtained results enabled to establish a way of compensatory structural-geometric functionalization, allowing the MSC-Scaffold adequate redesigning and manufacturing in additive SLM technology.
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Horvat G, Xhanari K, Finšgar M, Gradišnik L, Maver U, Knez Ž, Novak Z. Novel ethanol-induced pectin–xanthan aerogel coatings for orthopedic applications. Carbohydr Polym 2017; 166:365-376. [DOI: 10.1016/j.carbpol.2017.03.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 02/13/2017] [Accepted: 03/04/2017] [Indexed: 10/20/2022]
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Uklejewski R, Rogala P, Winiecki M, Tokłowicz R, Ruszkowski P, Wołuń-Cholewa M. Biomimetic Multispiked Connecting Ti-Alloy Scaffold Prototype for Entirely-Cementless Resurfacing Arthroplasty Endoprostheses-Exemplary Results of Implantation of the Ca-P Surface-Modified Scaffold Prototypes in Animal Model and Osteoblast Culture Evaluation. MATERIALS 2016; 9:ma9070532. [PMID: 28773652 PMCID: PMC5456909 DOI: 10.3390/ma9070532] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 06/07/2016] [Accepted: 06/23/2016] [Indexed: 12/02/2022]
Abstract
We present here—designed, manufactured, and tested by our research team—the Ti-alloy prototype of the multispiked connecting scaffold (MSC-Scaffold) interfacing the components of resurfacing arthroplasty (RA) endoprostheses with bone. The spikes of the MSC-Scaffold prototype mimic the interdigitations of the articular subchondral bone, which is the natural biostructure interfacing the articular cartilage with the periarticular trabecular bone. To enhance the osteoinduction/osteointegration potential of the MSC-Scaffold, the attempts to modify its bone contacting surfaces by the process of electrochemical cathodic deposition of Ca-P was performed with further immersion of the MSC-Scaffold prototypes in SBF in order to transform the amorphous calcium-phosphate coating in hydroxyapatite-like (HA-like) coating. The pilot experimental study of biointegration of unmodified and Ca-P surface-modified MSC-Scaffold prototypes was conducted in an animal model (swine) and in osteoblast cell culture. On the basis of a microscope-histological method the biointegration was proven by the presence of trabeculae in the interspike spaces of the MSC-Scaffold prototype on longitudinal and cross-sections of bone-implant specimens. The percentage of trabeculae in the area between the spikes of specimen containing Ca-P surface modified scaffold prototype observed in microCT reconstructions of the explanted joints was visibly higher than in the case of unmodified MSC-Scaffold prototypes. Significantly higher Alkaline Phosphatase (ALP) activity and the cellular proliferation in the case of Ca-P-modified MSC-Scaffold pre-prototypes, in comparison with unmodified pre-prototypes, was found in osteoblast cell cultures. The obtained results of experimental implantation in an animal model and osteoblast cell culture evaluations of Ca-P surface-modified and non-modified biomimetic MSC-Scaffold prototypes for biomimetic entirely-cementless RA endoprostheses indicate the enhancement of the osteoinduction/osteointegration potential by the Ca-P surface modification of the Ti-alloy MSC-Scaffold prototype. Planned further research on the prototype of this biomimetic MSC-Scaffold for a new generation of RA endoprostheses is also given.
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Affiliation(s)
- Ryszard Uklejewski
- Department of Medical Bioengineering Fundamentals, Institute of Technology, Casimir the Great University, Karola Chodkiewicza Street 30, Bydgoszcz 85-064, Poland.
- Department of Process Engineering, Institute of Technology and Chemical Engineering, Poznan University of Technology, Marii Sklodowskiej-Curie 2, Poznan 60-965, Poland.
| | - Piotr Rogala
- Department of Spine Surgery, Oncologic Orthopaedics and Traumatology, Poznan University of Medical Sciences, 28 Czerwca 1956 135/147, Poznan 61-545, Poland.
| | - Mariusz Winiecki
- Department of Medical Bioengineering Fundamentals, Institute of Technology, Casimir the Great University, Karola Chodkiewicza Street 30, Bydgoszcz 85-064, Poland.
- Department of Process Engineering, Institute of Technology and Chemical Engineering, Poznan University of Technology, Marii Sklodowskiej-Curie 2, Poznan 60-965, Poland.
| | - Renata Tokłowicz
- Department of Process Engineering, Institute of Technology and Chemical Engineering, Poznan University of Technology, Marii Sklodowskiej-Curie 2, Poznan 60-965, Poland.
| | - Piotr Ruszkowski
- Department of Pharmacology, Poznan University of Medical Sciences, Rokietnicka 5A, Poznan 60-806, Poland.
| | - Maria Wołuń-Cholewa
- Department of Cell Biology, Poznan University of Medical Sciences, Rokietnicka 5D, Poznan 60-806, Poland.
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12
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Finšgar M, Uzunalić AP, Stergar J, Gradišnik L, Maver U. Novel chitosan/diclofenac coatings on medical grade stainless steel for hip replacement applications. Sci Rep 2016; 6:26653. [PMID: 27215333 PMCID: PMC4877581 DOI: 10.1038/srep26653] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 05/04/2016] [Indexed: 12/12/2022] Open
Abstract
Corrosion resistance, biocompatibility, improved osteointegration, as well the prevention of inflammation and pain are the most desired characteristics of hip replacement implants. In this study we introduce a novel multi-layered coating on AISI 316LVM stainless steel that shows promise with regard to all mentioned characteristics. The coating is prepared from alternating layers of the biocompatible polysaccharide chitosan and the non-steroid anti-inflammatory drug (NSAID), diclofenac. Electrochemical methods were employed to characterize the corrosion behavior of coated and uncoated samples in physiological solution. It is shown that these coatings improve corrosion resistance. It was also found that these coatings release the incorporated drug in controlled, multi-mechanism manner. Adding additional layers on top of the as-prepared samples, has potential for further tailoring of the release profile and increasing the drug dose. Biocompatibility was proven on human-derived osteoblasts in several experiments. Only viable cells were found on the sample surface after incubation of the samples with the same cell line. This novel coating could prove important for prolongation of the application potential of steel-based hip replacements, which are these days often replaced by more expensive ceramic or other metal alloys.
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Affiliation(s)
- Matjaž Finšgar
- University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| | - Amra Perva Uzunalić
- University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| | - Janja Stergar
- University of Maribor, Faculty of Medicine, Institute of Biomedical Sciences, Taborska ulica 8, SI-2000 Maribor, Slovenia
| | - Lidija Gradišnik
- University of Maribor, Faculty of Medicine, Institute of Biomedical Sciences, Taborska ulica 8, SI-2000 Maribor, Slovenia
| | - Uroš Maver
- University of Maribor, Faculty of Medicine, Institute of Biomedical Sciences, Taborska ulica 8, SI-2000 Maribor, Slovenia
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