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Stich T, Alagboso F, Křenek T, Kovářík T, Alt V, Docheva D. Implant-bone-interface: Reviewing the impact of titanium surface modifications on osteogenic processes in vitro and in vivo. Bioeng Transl Med 2022; 7:e10239. [PMID: 35079626 PMCID: PMC8780039 DOI: 10.1002/btm2.10239] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/08/2021] [Accepted: 06/13/2021] [Indexed: 12/12/2022] Open
Abstract
Titanium is commonly and successfully used in dental and orthopedic implants. However, patients still have to face the risk of implant failure due to various reasons, such as implant loosening or infection. The risk of implant loosening can be countered by optimizing the osteointegration capacity of implant materials. Implant surface modifications for structuring, roughening and biological activation in favor for osteogenic differentiation have been vastly studied. A key factor for a successful stable long-term integration is the initial cellular response to the implant material. Hence, cell-material interactions, which are dependent on the surface parameters, need to be considered in the implant design. Therefore, this review starts with an introduction to the basics of cell-material interactions as well as common surface modification techniques. Afterwards, recent research on the impact of osteogenic processes in vitro and vivo provoked by various surface modifications is reviewed and discussed, in order to give an update on currently applied and developing implant modification techniques for enhancing osteointegration.
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Affiliation(s)
- Theresia Stich
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
| | - Francisca Alagboso
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
| | - Tomáš Křenek
- New Technologies Research CentreUniversity of West BohemiaPilsenCzech Republic
| | - Tomáš Kovářík
- New Technologies Research CentreUniversity of West BohemiaPilsenCzech Republic
| | - Volker Alt
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
- Clinic and Polyclinic for Trauma Surgery, University Regensburg Medical CentreRegensburgGermany
| | - Denitsa Docheva
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
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Yang J, Li Y, Shi X, Shen M, Shi K, Shen L, Yang C. Design and analysis of three-dimensional printing of a porous titanium scaffold. BMC Musculoskelet Disord 2021; 22:654. [PMID: 34340671 PMCID: PMC8330076 DOI: 10.1186/s12891-021-04520-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 07/12/2021] [Indexed: 11/16/2022] Open
Abstract
Objective Mechanic strength, pore morphology and size are key factors for the three-dimensional (3D) printing of porous titanium scaffolds, therefore, developing optimal structure for the 3D printed titanium scaffold to fill bone defects in knee joints is instructive and important. Methods Structural models of titanium scaffolds with fifteen different pore unit were designed with 3D printing computer software; five different scaffold shapes were designed: imitation diamond-60°, imitation diamond-90°, imitation diamond-120°, regular tetrahedron and regular hexahedron. Each structural shape was evaluated with three pore sizes (400, 600 and 800 μm), and fifteen types of cylindrical models (size: 20 mm; height: 20 mm). Autodesk Inventor software was used to determine the strength and safety of the models by simulating simple strength acting on the knee joints. We analyzed the data and found suitable models for the design of 3D printing of porous titanium scaffolds. Results Fifteen different types of pore unit structural models were evaluated under positive pressure and lateral pressure; the compressive strength reduced when the pore size increased. Under torsional pressure, the strengths of the imitation diamond structure were similar when the pore size increased, and the strengths of the regular tetrahedron and regular hexahedron structures reduced when the pore size increased. In each case, the compressive strength of the regular hexahedron structure was highest, that of the regular tetrahedron was second highest, and that of the imitation diamond structure was relatively low. Fifteen types of cylindrical models under a set force were evaluated, and the sequence of comprehensive compressive strength, from strong to weak was: regular hexahedron > regular tetrahedron > imitation diamond-120° > imitation diamond-90° > imitation diamond-60°. The compressive strength of cylinder models was higher when the pore size was smaller. Conclusion The pore size and pore morphology were important factors influencing the compressive strength. The strength of each structure reduced when the pore size (400, 600 and 800 μm) increased. The models of regular hexahedron, regular tetrahedron and imitation diamond-120°appeared to meet the conditions of large pore sizes and high compressive strength.
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Affiliation(s)
- Jiajie Yang
- Nantong Haimen People's Hospital, 1201 Beijing Road, Haimen District, Nantong City, 226100, Jiangsu Province, China
| | - Yaqiang Li
- Renji Hospital Affiliated to Shanghai Jiaotong University School of Medicine, 145 Shandong Zhong Lu, Shanghai, 200001, China
| | - Xiaojian Shi
- Nantong Haimen People's Hospital, 1201 Beijing Road, Haimen District, Nantong City, 226100, Jiangsu Province, China
| | - Meihua Shen
- Nantong Haimen People's Hospital, 1201 Beijing Road, Haimen District, Nantong City, 226100, Jiangsu Province, China
| | - Kaibing Shi
- Nantong Haimen People's Hospital, 1201 Beijing Road, Haimen District, Nantong City, 226100, Jiangsu Province, China
| | - Lingjie Shen
- Nantong Haimen People's Hospital, 1201 Beijing Road, Haimen District, Nantong City, 226100, Jiangsu Province, China
| | - Chunxi Yang
- Renji Hospital Affiliated to Shanghai Jiaotong University School of Medicine, 145 Shandong Zhong Lu, Shanghai, 200001, China.
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Doi K, Kobatake R, Makihara Y, Oki Y, Umehara H, Kubo T, Tsuga K. The development of novel bioactive porous titanium as a bone reconstruction material. RSC Adv 2020; 10:22684-22690. [PMID: 35514562 PMCID: PMC9054584 DOI: 10.1039/d0ra03202f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 05/27/2020] [Indexed: 11/21/2022] Open
Abstract
Porous titanium fabricated by the resin-impregnated titanium substitute technique has good mechanical strength and osteoconduction. The alkali treatment of the titanium surface creates a bioactive surface. Alkali-treated porous titanium is expected to accelerate bone formation. The purpose of this study was to evaluate the bone reconstruction ability of alkali-treated porous titanium. Porous titanium (85% porosity) was treated with an alkali solution (5 N NaOH, 24 h). To assess material properties, we analyzed the surface structure by scanning electron microscopy (SEM) and mechanical strength testing. To assess bioactivity, each sample was soaked in a simulated body fluid (Hank's solution) for 7 days. Surface observations, weight change ratio measurement (after/before being soaked in Hank's solution) and surface elemental analysis were performed. We also designed an in vivo study with rabbit femurs. After 2 and 3 weeks of implantation, histological observations and histomorphometric bone formation ratio analysis were performed. All data were statistically analyzed using a Student's t-test (P < 0.05) (this study was approved by the Hiroshima University animal experiment ethics committee: A11-5-5). Non-treated porous titanium (control) appeared to have a smooth surface and the alkali-treated porous titanium (ATPT) had a nano-sized needle-like rough surface. ATPT had similar mechanical strength to that of the control. After soaking into the Hank's solution, we observed apatite-like crystals in the SEM image, weight gain, and high Ca and P contents in ATPT. There was significant bone formation at an early stage in ATPT compared with that in control. It was suggested that the alkali-treated porous titanium had a bioactive surface and induced bone reconstruction effectively. This novel bioactive porous titanium can be expected to be a good bone reconstruction material. Porous titanium fabricated by the resin-impregnated titanium substitute technique has good mechanical strength and osteoconduction.![]()
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Affiliation(s)
- Kazuya Doi
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Hiroshima 734-8553
- Japan
| | - Reiko Kobatake
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Hiroshima 734-8553
- Japan
| | - Yusuke Makihara
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Hiroshima 734-8553
- Japan
| | - Yoshifumi Oki
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Hiroshima 734-8553
- Japan
| | - Hanako Umehara
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Hiroshima 734-8553
- Japan
| | - Takayasu Kubo
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Hiroshima 734-8553
- Japan
| | - Kazuhiro Tsuga
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Hiroshima 734-8553
- Japan
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Kobatake R, Doi K, Kubo T, Makihara Y, Oki Y, Yokoi M, Umehara H, Tsuga K. Novel fabrication of porous titanium by a resin-impregnated titanium substitution technique for bone reconstruction. RSC Adv 2019; 9:1625-1631. [PMID: 35518009 PMCID: PMC9059756 DOI: 10.1039/c8ra08744j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 11/25/2018] [Indexed: 11/21/2022] Open
Abstract
The purpose of this study was to evaluate the characteristic structures and osteoconduction ability of porous titanium structures using a resin-impregnated titanium substitution fabrication technique.
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Affiliation(s)
- Reiko Kobatake
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Minami-ku, Hiroshima 734-8553
- Japan
| | - Kazuya Doi
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Minami-ku, Hiroshima 734-8553
- Japan
| | - Takayasu Kubo
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Minami-ku, Hiroshima 734-8553
- Japan
| | - Yusuke Makihara
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Minami-ku, Hiroshima 734-8553
- Japan
| | - Yoshifumi Oki
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Minami-ku, Hiroshima 734-8553
- Japan
| | - Miyuki Yokoi
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Minami-ku, Hiroshima 734-8553
- Japan
| | - Hanako Umehara
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Minami-ku, Hiroshima 734-8553
- Japan
| | - Kazuhiro Tsuga
- Department of Advanced Prosthodontics
- Hiroshima University Graduate School of Biomedical and Health Sciences
- Minami-ku, Hiroshima 734-8553
- Japan
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Tovar N, Witek L, Atria P, Sobieraj M, Bowers M, Lopez CD, Cronstein BN, Coelho PG. Form and functional repair of long bone using 3D-printed bioactive scaffolds. J Tissue Eng Regen Med 2018; 12:1986-1999. [PMID: 30044544 DOI: 10.1002/term.2733] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 04/18/2018] [Accepted: 07/17/2018] [Indexed: 01/08/2023]
Abstract
Injuries to the extremities often require resection of necrotic hard tissue. For large-bone defects, autogenous bone grafting is ideal but, similar to all grafting procedures, is subject to limitations. Synthetic biomaterial-driven engineered healing offers an alternative approach. This work focuses on three-dimensional (3D) printing technology of solid-free form fabrication, more specifically robocasting/direct write. The research hypothesizes that a bioactive calcium-phosphate scaffold may successfully regenerate extensive bony defects in vivo and that newly regenerated bone will demonstrate mechanical properties similar to native bone as healing time elapses. Robocasting technology was used in designing and printing customizable scaffolds, composed of 100% beta tri-calcium phosphate (β-TCP), which were used to repair critical sized long-bone defects. Following full thickness segmental defects (~11 mm × full thickness) in the radial diaphysis in New Zealand white rabbits, a custom 3D-printed, 100% β-TCP, scaffold was implanted or left empty (negative control) and allowed to heal over 8, 12, and 24 weeks. Scaffolds and bone, en bloc, were subjected to micro-CT and histological analysis for quantification of bone, scaffold and soft tissue expressed as a function of volume percentage. Additionally, biomechanical testing at two different regions, (a) bone in the scaffold and (b) in native radial bone (control), was conducted to assess the newly regenerated bone for reduced elastic modulus (Er ) and hardness (H) using nanoindentation. Histological analysis showed no signs of any adverse immune response while revealing progressive remodelling of bone within the scaffold along with gradual decrease in 3D-scaffold volume over time. Micro-CT images indicated directional bone ingrowth, with an increase in bone formation over time. Reduced elastic modulus (Er ) data for the newly regenerated bone presented statistically homogenous values analogous to native bone at the three time points, whereas hardness (H) values were equivalent to the native radial bone only at 24 weeks. The negative control samples showed limited healing at 8 weeks. Custom engineered β-TCP scaffolds are biocompatible, resorbable, and can directionally regenerate and remodel bone in a segmental long-bone defect in a rabbit model. Custom designs and fabrication of β-TCP scaffolds for use in other bone defect models warrant further investigation.
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Affiliation(s)
- Nick Tovar
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, New York
| | - Lukasz Witek
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, New York
| | - Pablo Atria
- Biomaterials Department, Universidad de los Andes, Santiago, Chile
| | - Michael Sobieraj
- Department of Orthopaedic Surgery, University of Pennsylvania, Penn Presbyterian Medical Center, Philadelphia, Pennsylvania
| | - Michelle Bowers
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, New York
| | - Christopher D Lopez
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, New York.,Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, New York
| | - Bruce N Cronstein
- Department of Medicine, New York University School of Medicine, New York, New York
| | - Paulo G Coelho
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, New York.,Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, New York
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6
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Wang Q, Zhang H, Gan H, Wang H, Li Q, Wang Z. Application of combined porous tantalum scaffolds loaded with bone morphogenetic protein 7 to repair of osteochondral defect in rabbits<sup/>. INTERNATIONAL ORTHOPAEDICS 2018; 42:1437-1448. [PMID: 29445961 DOI: 10.1007/s00264-018-3800-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 01/23/2018] [Indexed: 11/30/2022]
Abstract
PURPOSE Porous tantalum (PT) has been widely used in orthopaedic applications for low modulus of elasticity, excellent biocompatibility, and the microstructures similar to cancellous bone. In order to improve the biological activity of PT, biologically active factors can be combined with the material. The purpose of this study was to investigate if bone morphogenetic protein 7 (BMP-7) modifications could enhance the repairing of cartilage of PT in osteochondral defect in medial femoral condyle of rabbits. METHODS A cylindrical osteochondral defect model was created on the animal medial femoral condyle of and filled as follows: PT modified with BMP-7 for MPT group, non-modified PT for the PT group, while no implants were used for the blank group. The regenerated osteochondral tissue was assessed and analyzed by histological observations at four, eight and 16 weeks post-operation and evaluated in an independent and blinded manner by five different observers using a histological score. Osteochondral and subchondral bone defect repair was assessed by micro-CT scan at 16 weeks post-operation, while the biomechanical test was performed at 16 weeks post-operation. RESULTS Briefly, higher overall histological score was observed in the MPT group compared to PT group. Furthermore, more new osteochondral tissue and bone formed at the interface and inside the inner pores of scaffolds of the MPT group compared to PT group. Additionally, the micro-CT data suggested that the new bone volume fractions and the quantity and quality of trabecular bone, as well as the maximum release force of the bone, were higher in the MPT group compared to PT group. CONCLUSIONS We demonstrated that the applied modified PT with BMP-7 promotes excellent subchondral bone regeneration and may serve as a novel approach for osteochondral defects repair.
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Affiliation(s)
- Qian Wang
- Experimental Center, North China University of Science and Technology, Tangshan, 063000, China
| | - Hui Zhang
- Department of Joint Surgery 1, The Second Hospital of Tangshan, Tangshan, 063000, China
| | - Hongquan Gan
- Department of Orthopaedics, Affiliated Hospital, North China University of Science and Technology, No. 73 Jianshe Road, Tangshan, 063000, China
| | - Hui Wang
- Hand Surgery Department, The Second Hospital of Tangshan, Tangshan, 063000, China
| | - Qijia Li
- Experimental Center, North China University of Science and Technology, Tangshan, 063000, China
| | - Zhiqiang Wang
- Department of Orthopaedics, Affiliated Hospital, North China University of Science and Technology, No. 73 Jianshe Road, Tangshan, 063000, China.
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Zhu W, Zhao Y, Ma Q, Wang Y, Wu Z, Weng X. 3D-printed porous titanium changed femoral head repair growth patterns: osteogenesis and vascularisation in porous titanium. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:62. [PMID: 28251470 DOI: 10.1007/s10856-017-5862-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 01/30/2017] [Indexed: 06/06/2023]
Abstract
Osteonecrosis of the femoral head (ONFH) is a major cause of morbidity, and total hip arthroplasty is both traumatic and expensive. Here, we created a gelatine scaffold embedded in uniquely shaped, 3D-printed porous titanium parts, which could attract and promote the proliferation of osteoblasts as well as bone regeneration, as the extracellular matrix (ECM) does in vivo. Interestingly, after hybridisation with platelets, the scaffold exhibited a low yet considerable rate of stable, safe and long-term growth factor release. Additionally, a novel ONFH model was constructed and verified. Scaffolds implanted in this model were found to accelerate bone repair. In conclusion, our scaffold successfully simulates the ECM and considerably accelerates bone regeneration, in which platelets play an indispensable role. We believe that platelets should be emphasised as carriers that may be employed to transport drugs, cytokines and other small molecules to target locations in vivo. In addition, this novel scaffold is a useful material for treating ONFH. An overview of the novel scaffold mimicking the extracellular environment in bone repair. a and b: A gelatine scaffold was cross-linked and freeze-dried within 3D-printed porous titanium. c: Platelets were coated onto the gelatine microscaffold after freeze-drying platelet-rich plasma. d: The microscaffold supported the migration of cells into the titanium pores and their subsequent growth, while the platelets slowly released cell factors, exerting bioactivity.
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Affiliation(s)
- Wei Zhu
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Yan Zhao
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Qi Ma
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Yingjie Wang
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Zhihong Wu
- Beijing Key Laboratory for Genetic Research of Bone and Joint Disease, Central Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan, Beijing, 100730, P.R. China.
| | - Xisheng Weng
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China.
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Wang H, Li Q, Wang Q, Zhang H, Shi W, Gan H, Song H, Wang Z. Enhanced repair of segmental bone defects in rabbit radius by porous tantalum scaffolds modified with the RGD peptide. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:50. [PMID: 28197822 DOI: 10.1007/s10856-017-5860-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 01/30/2017] [Indexed: 06/06/2023]
Abstract
Fast and stable repair of segmental bone defects remains a challenge for clinical orthopedic surgery. In recent years, porous tantalum has been widely applied in clinical orthopedics for low modulus of elasticity, with three-dimensional microstructures similar to cancellous bone and excellent biocompatibility. To further improve bone the repairing ability of porous tantalum, the cyclo(-RGDfK-) peptide was coated on the surface of porous tantalum scaffolds. A model of 15 mm segmental defect was made at the midshaft of right radius in New Zealand White rabbits. In the experimental group, defects were implanted (press-fit) using porous tantalum scaffolds modified with cyclo(-RGDfK-) peptide. Control animals were implanted with non-modified porous tantalum scaffolds or xenogeneic cancellous bone scaffolds, respectively. No implant was provided for the blank group. Bone repair was assessed by X-ray and histological observations at 4, 8, and 16 weeks post-operation, with biomechanical tests and micro-computed tomography performed at 16 weeks post-surgery. The results showed that bone formation was increased at the interface and inside the inner pores of modified porous tantalum scaffolds than those of non-modified porous tantalum scaffolds; biomechanical properties in the modified porous tantalum group were superior to those of the non-modified porous tantalum and xenogeneic cancellous bone groups, while new bone volume fractions using micro-computed tomography analysis were similar between the modified porous tantalum and xenogeneic cancellous bone groups. Our findings suggested that modified porous tantalum scaffolds had enhanced repairing ability in segmental bone defect in rabbit radius, and may serve as a potential material for repairing large bone defects.
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Affiliation(s)
- Hui Wang
- Hand Surgery Department, Tangshan orthopaedic hospital affiliated, North China University of Science and Technology, Tangshan, Hebei, 063000, P.R. China
| | - Qijia Li
- Experimental Center, North China University of Science and Technology, Tangshan, Hebei, 063000, P.R. China
| | - Qian Wang
- Department of Anatomy, Basic Medical College, North China University of Science and Technology, Tangshan, Hebei, 063000, P.R. China
| | - Hui Zhang
- Department of Joint Surgery, Tangshan orthopaedic hospital affiliated, North China University of Science and Technology, Tangshan, Hebei, 063000, P.R. China
| | - Wei Shi
- Department of Orthopaedics, Affiliated Hospital, North China University of Science and Technology, Tangshan, Hebei, 063000, P.R. China
| | - Hongquan Gan
- Department of Orthopaedics, Affiliated Hospital, North China University of Science and Technology, Tangshan, Hebei, 063000, P.R. China
| | - Huiping Song
- Department of Orthopaedics, Affiliated Hospital, North China University of Science and Technology, Tangshan, Hebei, 063000, P.R. China
| | - Zhiqiang Wang
- Department of Orthopaedics, Affiliated Hospital, North China University of Science and Technology, Tangshan, Hebei, 063000, P.R. China.
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Chen H, Ji XR, Zhang Q, Tian XZ, Zhang BX, Tang PF. Effects of Calcium Sulfate Combined with Platelet-rich Plasma on Restoration of Long Bone Defect in Rabbits. Chin Med J (Engl) 2017; 129:557-61. [PMID: 26904990 PMCID: PMC4804437 DOI: 10.4103/0366-6999.176981] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The treatment for long bone defects has been a hot topic in the field of regenerative medicine. This study aimed to evaluate the therapeutic effects of calcium sulfate (CS) combined with platelet-rich plasma (PRP) on long bone defect restoration. METHODS A radial bone defect model was constructed through an osteotomy using New Zealand rabbits. The rabbits were randomly divided into four groups (n = 10 in each group): a CS combined with PRP (CS-PRP) group, a CS group, a PRP group, and a positive (recombinant human bone morphogenetic protein-2) control group. PRP was prepared from autologous blood using a two-step centrifugation process. CS-PRP was obtained by mixing hemihydrate CS with PRP. Radiographs and histologic micrographs were generated. The percentage of bone regenerated bone area in each rabbit was calculated at 10 weeks. One-way analysis of variance was performed in this study. RESULTS The radiographs and histologic micrographs showed bone restoration in the CS-PRP and positive control groups, while nonunion was observed in the CS and PRP groups. The percentages of bone regenerated bone area in the CS-PRP (84.60 ± 2.87%) and positive control (52.21 ± 4.53%) groups were significantly greater than those in the CS group (12.34 ± 2.17%) and PRP group (16.52 ± 4.22%) (P < 0.001). In addition, the bone strength of CS-PRP group (43.10 ± 4.10%) was significantly greater than that of the CS group (20.10 ± 3.70%) or PRP group (25.10 ± 2.10%) (P < 0.001). CONCLUSION CS-PRP functions as an effective treatment for long bone defects through stimulating bone regeneration and enhancing new bone strength.
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Affiliation(s)
| | | | | | | | | | - Pei-Fu Tang
- Department of Orthopaedics, Chinese People's Liberation Army General Hospital, Beijing 100038, China
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Abueva CDG, Jang DW, Padalhin A, Lee BT. Phosphonate-chitosan functionalization of a multi-channel hydroxyapatite scaffold for interfacial implant-bone tissue integration. J Mater Chem B 2017; 5:1293-1301. [DOI: 10.1039/c6tb03228a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphonate-chitosan functionalization of a multi-channel hydroxyapatite scaffold as a new approach to improve interfacial implant-bone tissue integration.
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Affiliation(s)
- Celine D. G. Abueva
- Department of Regenerative Medicine
- College of Medicine
- Soonchunhyang University
- Cheonan-si
- Republic of Korea
| | - Dong-Woo Jang
- Department of Regenerative Medicine
- College of Medicine
- Soonchunhyang University
- Cheonan-si
- Republic of Korea
| | - Andrew Padalhin
- Department of Regenerative Medicine
- College of Medicine
- Soonchunhyang University
- Cheonan-si
- Republic of Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine
- College of Medicine
- Soonchunhyang University
- Cheonan-si
- Republic of Korea
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Cui W, Sun G, Qu Y, Xiong Y, Sun T, Ji Y, Yang L, Shao Z, Ma J, Zhang S, Guo X. Repair of rat calvarial defects using Si-doped hydroxyapatite scaffolds loaded with a bone morphogenetic protein-2-related peptide. J Orthop Res 2016; 34:1874-1882. [PMID: 26909759 DOI: 10.1002/jor.23208] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 02/17/2016] [Indexed: 02/06/2023]
Abstract
Tissue engineering promises therapies ideal for treating conventional large bone injuries and defects. In the present study, we developed a novel Si-HA scaffold loaded with a synthetic BMP-2-related peptide, P28, and tested its ability to repair a critical-sized calvarial defect. We created a calvarial defect (5 mm in diameter) in the parietal bone of 32 rats and implanted one of the following biomaterials: No implant (control), Si-HA, P28/Si-HA, or rhBMP-2/Si-HA. As assessed by micro CT imaging and histological evaluations, the P28/Si-HA scaffold promoted bone recovery to a similar degree as the rhBMP-2/Si-HA scaffold. In addition, both P28/Si-HA and rhBMP-2/Si-HA promoted recovery better than Si-HA alone. The novel P28/Si-HA scaffold might represent a promising biomaterial for future bone tissue engineering applications. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:1874-1882, 2016.
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Affiliation(s)
- Wei Cui
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China
| | - Guangfei Sun
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Yanzhen Qu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China
| | - Yi Xiong
- Department of Orthopedics, Central hospital of Enshi, Enshi, 445000, People's Republic of China
| | - Tingfang Sun
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China
| | - Yanhui Ji
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China
| | - Liang Yang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China
| | - Zengwu Shao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China
| | - Jun Ma
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Shengmin Zhang
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Xiaodong Guo
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China
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