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Tower SS, Medlin DJ, Bridges RL, Cho CS. Corrosion of Polished Cobalt-Chrome Stems Presenting as Cobalt Encephalopathy. Arthroplast Today 2020; 6:1022-1027. [PMID: 33385045 PMCID: PMC7772456 DOI: 10.1016/j.artd.2020.10.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/09/2020] [Accepted: 10/15/2020] [Indexed: 12/29/2022] Open
Abstract
Adverse reactions to metallic debris from corrosion of polished cobalt-chromium–cemented femoral stems are reported. Cobaltism (systemic cobalt poisoning) has not been reported from this phenomenon. Three patients presented to their surgeon for ongoing care 10-20 years after primary metal-on-plastic hip arthroplasty with the same polished cobalt-chromium–cemented femoral stems (Heritage, Zimmer). Urine cobalt was elevated, and the patients had symptoms consistent with cobaltism. Quantitative-F16DG-PET-CT brain imaging was performed showing generalized and focal brain hypometabolism consistent with cobalt encephalopathy. At revision, all stems were well fixed and grossly corroded. At 1 year after revision, cobalturia and cognitive symptoms were resolved or improved. Mechanically assisted crevice corrosion at the polymethylmethacrylate interface is a complication of polished cobalt-chromium–cemented stems that can result in systemic cobalt exposure and toxic encephalopathy. Our cases had only minor periprosthetic symptoms. Patients implanted with polished cobalt-chromium–cemented stems warrant monitoring with urine cobalt. Patients with cobaltemia warrant an evaluation for toxic encephalopathy.
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Affiliation(s)
- Stephen S Tower
- Affiliated Professor Alaska's Medical School, Tower Orthopedic and Joint Replacement Clinic, Anchorage, AK, USA
| | | | | | - Christina S Cho
- Tower Orthopedic and Joint Replacement Clinic, Anchorage, AK, USA
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Sun GJ, Yang SF, Ti YF, Guo GD, Fan GT, Chen FR, Xu SG, Zhao JN. Influence of Ceramic Debris on Osteoblast Behaviors: An In Vivo Study. Orthop Surg 2019; 11:770-776. [PMID: 31464084 PMCID: PMC6819169 DOI: 10.1111/os.12496] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 07/06/2018] [Accepted: 08/24/2018] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE Wear-induced aseptic loosening has been accepted as one of the main reasons for failure of total hip arthroplasty. Ceramic wear debris is generated following prosthesis implantation and plays an important part in the upregulation of inflammatory factors in total hip arthroplasty. The present study investigates the influence of ceramic debris on osteoblasts and inflammatory factors. METHODS Ceramic debris was prepared by mechanical grinding of an aluminum femoral head and added to cultures of MC3T3-E subclone 14 cells at different concentrations (i.e. 0, 5, 10, and 15 μg/mL). Cell proliferation was evaluated using a Cell Counting Kit (CCK-8), and cell differentiation was assessed by mRNA expression of alkaline phosphatase (ALP), osteocalcin (OCN), and osteopontin (OPN). In addition, cell bio-mineralization was evaluated through alizarin red S staining, and release of tumor necrosis factor alpha (TNF-α), interleukin-1 beta (IL-1β), and interleukin-6 (IL-6) was measured through enzyme-linked immunosorbent assays (ELISA). Furthermore, mRNA expression of Smad1, Smad4, and Smad5 and protein expression of phosphorylated Smad1, Smad4, and Smad5 were measured by reverse transcriptase polymerase chain reaction (RT-PCR) and western blotting. RESULTS The ceramic debris had irregular shapes and sizes, and analysis of the size distribution using a particle size analyzer indicated that approximately 90% of the ceramic debris was smaller than 3.2 μm (2.0 ± 0.4 μm), which is considered clinically relevant. The results for mRNA expression of ALP, OCN, and OPN and alizarin red S staining indicated that cell differentiation and bio-mineralization were significantly inhibited by the presence of ceramic debris at all tested concentrations (P < 0.05, and the values decreased gradually with the increase of ceramic debris concentration), but the results of the CCK-8 assay showed that cell proliferation was not significantly affected (P > 0.05; there was no significant difference between the groups at 1, 3, and 5 days). In addition, the results of ELISA, RT-PCR, and western blotting demonstrated that ceramic debris significantly promoted the release of inflammatory factors, including TNF-α, IL-β, and IL-6 (P < 0.05, and the values increased gradually with the increase of ceramic debris concentration), and also greatly reduced the mRNA expression of Smad1, Smad4, and Smad5 (the values decreased gradually with the increase of ceramic debris concentration) as well as protein expression of phosphorylated Smad1, Smad4, and Smad5. CONCLUSION Ceramic debris may affect differentiation and bio-mineralization of MC3T3-E subclone 14 cells through the bone morphogenetic protein/Smad signaling pathway.
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Affiliation(s)
- Guo-Jing Sun
- Department of Orthopaedic Surgery, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Shu-Feng Yang
- Department of Orthopaedic Surgery, Nanjing 81th Hospital of PLA, Nanjing, China
| | - Yun-Fan Ti
- Department of Orthopaedic Surgery, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Guo-Dong Guo
- Department of Orthopaedic Surgery, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Geng-Tao Fan
- Department of Orthopaedic Surgery, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Feng-Rong Chen
- Department of Orthopaedic Surgery, Xiamen 174th Hospital of PLA, Xiamen, China
| | - Shao-Gang Xu
- Department of Emergency Surgery, Zhengzhou Orthopaedic Hospital, Zhengzhou, China
| | - Jian-Ning Zhao
- Department of Orthopaedic Surgery, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
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Dickinson EC, Sellenschloh K, Morlock MM. Impact of stem taper damage on the fracture strength of ceramic heads with adapter sleeves. Clin Biomech (Bristol, Avon) 2019; 63:193-200. [PMID: 30913462 DOI: 10.1016/j.clinbiomech.2019.03.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 02/25/2019] [Accepted: 03/11/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Using a new ceramic head with a titanium adapter sleeve offers the possibility of maintaining a well fixed stem when conducting cup revision of a total hip arthroplasty. The aim of this study is to test the impact of stem taper damage on the fracture strength of sleeved ceramic heads. METHODS Pristine zirconia-toughened alumina heads with titanium adapter sleeves (BIOLOX®OPTION System) were tested on damaged Ti-4Al-6V stem tapers in accordance with ISO7206-10. Four distinctive damage types classified as intolerable by the manufacture were investigated, representing various reductions in contact area between the stem taper and sleeve taper as well as damage incurred from previous ceramic head fracture. FINDINGS The largest reduction in fracture strength occurred for a loss of contact for the entire length of the stem taper. Nonetheless, the fracture strength in all investigated cases was several times higher than that defined by the FDA standards. INTERPRETATION The use of a titanium sleeve recreates a uniform contact situation between the ceramic head and the outer sleeve taper in situations of damaged stem tapers. For the investigated damage types a high fracture strength of the ceramic head was maintained. This study supports the clinical use for sleeved ceramic heads in instances of greater damages of stem tapers than previously defined in order to spare patients from stem removal.
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Affiliation(s)
- Emilie C Dickinson
- Institute of Biomechanics, TUHH Hamburg University of Technology, Denickestrasse 15, 21073 Hamburg, Germany.
| | - Kay Sellenschloh
- Institute of Biomechanics, TUHH Hamburg University of Technology, Denickestrasse 15, 21073 Hamburg, Germany.
| | - Michael M Morlock
- Institute of Biomechanics, TUHH Hamburg University of Technology, Denickestrasse 15, 21073 Hamburg, Germany.
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Torsional Fretting Wear Behavior of PVD TiCN Coated CuNiAl Blade Bearing in Oil and Artificial Seawater. COATINGS 2019. [DOI: 10.3390/coatings9020140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The feasibility of alleviating torsional fretting wear of the blade bearing by preparing PVD TiCN coating was studied. The results show that the friction torque was highly influenced by the wear debris acting as the solid lubricant. The TiCN coating reduced the wear volume by 97.6% and 62.3% in oil and artificial seawater, respectively, which was mainly due to an increase in surface hardness. In oil, the produced sulfates and phosphates prevent seizures between the friction pair and the worn surface was characterized by polishing wear. In artificial seawater, the wear mechanism was a combination of mechanical wear and corrosion wear. This study reveals that the TiCN coating is suitable for alleviation of fretting wear in the blade bearing.
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Slepička P, Michaljaničová I, Rimpelová S, Švorčík V. Surface roughness in action – Cells in opposition. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:818-826. [DOI: 10.1016/j.msec.2017.03.061] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 12/22/2016] [Accepted: 03/04/2017] [Indexed: 12/22/2022]
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Liu W, Li Z, Zheng L, Zhang X, Liu P, Yang T, Han B. Electrospun fibrous silk fibroin/poly(L-lactic acid) scaffold for cartilage tissue engineering. Tissue Eng Regen Med 2016; 13:516-526. [PMID: 30603432 PMCID: PMC6170845 DOI: 10.1007/s13770-016-9099-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Revised: 12/16/2015] [Accepted: 12/22/2015] [Indexed: 01/13/2023] Open
Abstract
For successful tissue engineering of articular cartilage, a scaffold with mechanical properties that match those of natural cartilage as closely as possible is needed. In the present study, we prepared a fibrous silk fibroin (SF)/poly(L-lactic acid) (PLLA) scaffold via electrospinning and investigated the morphological, mechanical, and degradation properties of the scaffolds fabricated using different electrospinning conditions, including collection distance, working voltage, and the SF:PLLA mass ratio. In addition, in vitro cell-scaffold interactions were evaluated in terms of chondrocyte adhesion to the scaffolds as well as the cytotoxicity and cytocompatibility of the scaffolds. The optimum electrospinning conditions for generating a fibrous SF/PLLA scaffold with the best surface morphology (ordered alignment and suitable diameter) and tensile strength (~1.5 MPa) were a collection distance of 20 cm, a working voltage of 15 kV, and a SF:PLLA mass ratio of S50P50. The degradation rate of the SF/PLLA scaffolds was found to be determined by the SF:PLLA mass ratio, and it could be increased by reducing the PLLA proportion. Furthermore, chondrocytes spread well on the fibrous SF/PLLA scaffolds and secreted extracellular matrix, indicating good adhesion to the scaffold. The cytotoxicity of SF/PLLA scaffold extract to chondrocytes over 24 and 48 h in culture was low, indicating that the SF/PLLA scaffolds are biocompatible. Chondrocytes grew well on the SF/PLLA scaffold after 1, 3, 5, and 7 days of direct contact, indicating the good cytocompatibility of the scaffold. These results demonstrate that the fibrous SF/PLLA scaffold represents a promising composite material for use in cartilage tissue engineering.
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Affiliation(s)
- Weiwei Liu
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Jilin University, 1500 Tsinghua Road, Changchun, 130021 China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
| | - Zhengqiang Li
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Jilin University, 1500 Tsinghua Road, Changchun, 130021 China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
| | - Lu Zheng
- College of Chemistry, Jilin University, Changchun, China
| | - Xiaoyan Zhang
- The Affiliated Hospital of Stomatology, Hebei Medical University, Shijiazhuang, China
| | - Peng Liu
- Department of Stomatology, School of Medicine, Yanbian University, Yanji, China
| | - Ting Yang
- College of Chemistry, Jilin University, Changchun, China
| | - Bing Han
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Jilin University, 1500 Tsinghua Road, Changchun, 130021 China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
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Shearwood-Porter N, Browne M, Milton JA, Cooper MJ, Palmer MR, Latham JM, Wood RJK, Cook RB. Damage mechanisms at the cement-implant interface of polished cemented femoral stems. J Biomed Mater Res B Appl Biomater 2016; 105:2027-2033. [DOI: 10.1002/jbm.b.33739] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 05/10/2016] [Accepted: 06/06/2016] [Indexed: 11/05/2022]
Affiliation(s)
| | - Martin Browne
- Bioengineering Science Research Group; University of Southampton; Southampton UK
| | - James A. Milton
- School of Ocean and Earth Science; University of Southampton, National Oceanography Centre; Southampton UK
| | - Matthew J. Cooper
- School of Ocean and Earth Science; University of Southampton, National Oceanography Centre; Southampton UK
| | - Martin R. Palmer
- School of Ocean and Earth Science; University of Southampton, National Oceanography Centre; Southampton UK
| | - Jeremy M. Latham
- Southampton Orthopaedic Centre for Arthroplasty and Revision Surgery (SOCARS); Southampton General Hospital; Southampton UK
| | - Robert J. K. Wood
- National Centre for Advanced Tribology at Southampton (nCATS); University of Southampton; Highfield, Southampton UK
| | - Richard B. Cook
- National Centre for Advanced Tribology at Southampton (nCATS); University of Southampton; Highfield, Southampton UK
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Hao C, Wang Y, Shao L, Liu J, Chen L, Zhao Z. Local Injection of Bone Mesenchymal Stem Cells and Fibrin Glue Promotes the Repair of Bone Atrophic Nonunion In Vivo. Adv Ther 2016; 33:824-33. [PMID: 27098172 DOI: 10.1007/s12325-016-0329-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Indexed: 10/21/2022]
Abstract
INTRODUCTION This study aimed to evaluate the efficacy of local injection of bone mesenchymal stem cells (BMSCs) and fibrin glue in the treatment of atrophic nonunion in an animal model. METHODS Thirty-six male Lewis rats were randomly assigned into three groups: Group A (control group), Group B (atrophic nonunion group), and Group C (experimental group). All the rats underwent femoral osteotomy of the right hind limb, and stabilized with a custom-designed external fixator. Atrophic nonunion of the rats in Group B and C was induced by cauterization of the periosteum and bone marrow removal, and repaired by injection of fibrin glue and BMSCs-seeded fibrin glue, respectively. The surgically treated femurs were assessed by radiographic and histological analysis, and biomechanical test. RESULTS During the follow-up period, the external fixator maintained correct placement and all the femurs retained normal positioning. Eight weeks postoperatively, atrophic nonunion was detected in Group B, with the presence of fibrous connective tissue in the osteotomy gap. The femurs in Group C demonstrated complete bony bridging of the osteotomy gap, with the formation of plenty of woven bone. CONCLUSION The repair of bone atrophic nonunion can be promoted through local injection of BMSCs and fibrin glue.
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Li Z, Liu P, Yang T, Sun Y, You Q, Li J, Wang Z, Han B. Composite poly(l-lactic-acid)/silk fibroin scaffold prepared by electrospinning promotes chondrogenesis for cartilage tissue engineering. J Biomater Appl 2016; 30:1552-65. [PMID: 27059497 DOI: 10.1177/0885328216638587] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Nanofibrous materials produced by electrospinning have attracted considerable attention from researchers in regenerative medicine. A combination of nanofibrous scaffold and chondrocytes is considered promising for repair of cartilage defect or damage. In the present study, we fabricated a poly(l-lactic-acid) (PLLA)/silk fibroin (SF) nanofibrous scaffold by electrospinning and evaluated its chondrogenic potential. The PLLA/SF nanofibers were characterized for diameter, surface wettability, swelling ratio, and tensile strength. Throughin vitroexperiments, PLLA/SF scaffold-chondrocyte interactions were investigated relative to the unmodified PLLA scaffold with regard to cellular adhesion, spreading, and proliferation by scanning electron microscopy and confocal laser scanning microscopy, and through analyses of DNA, sulfated glycosaminoglycan, and collagen. In addition, hematoxylin-eosin and Alcian blue-nuclear fast red staining were used to observe growth of chondrocytes, and secretion and distribution of cartilage-specific extracellular matrices in the scaffolds. Expressions of cartilage-related genes (collagen II, aggrecan, sox9, collagen I, and collagen X) were detected by real-time quantitative PCR. The PLLA/SF scaffold had better hydrophilicity, and could support chondrocytes adhesion and spreading more effectively than the unmodified PLLA scaffold. Chondrocytes secreted more cartilage-specific extracellular matrices and maintained their phenotype on the PLLA/SF scaffold. So it is concluded that the PLLA/SF scaffold is more conducive toin vitroformation of cartilage-like new tissues than the unmodified PLLA scaffold, and may be a promising material in cartilage tissue engineering.
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Affiliation(s)
- Zhengqiang Li
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Changchun, China Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
| | - Peng Liu
- Department of Stomatology, School of Medicine, Yanbian University, Yanji, China
| | - Ting Yang
- College of Chemistry, Jilin University, Changchun, China
| | - Ying Sun
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Changchun, China Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
| | - Qi You
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Changchun, China Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
| | - Jiale Li
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Changchun, China Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
| | - Zilin Wang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Changchun, China Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
| | - Bing Han
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Changchun, China Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
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Jiang N, Zhu S, Li J, Zhang L, Liao Y, Hu J. Development of a novel biomimetic micro/nano-hierarchical interface for enhancement of osseointegration. RSC Adv 2016. [DOI: 10.1039/c6ra03183h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
In the present study, a novel biomimetic micro/nano-hierarchical interface was obtained and an unexpected trabecular bone-like interface was given.
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Affiliation(s)
- Nan Jiang
- State Key Laboratory of Oral Diseases and Department of Oral and Maxillofacial Surgery
- West China Hospital of Stomatology
- Sichuan University
- Chengdu
- China
| | - Songsong Zhu
- State Key Laboratory of Oral Diseases and Department of Oral and Maxillofacial Surgery
- West China Hospital of Stomatology
- Sichuan University
- Chengdu
- China
| | - Jihua Li
- State Key Laboratory of Oral Diseases and Department of Oral and Maxillofacial Surgery
- West China Hospital of Stomatology
- Sichuan University
- Chengdu
- China
| | - Li Zhang
- Research Center for Nano-Biomaterials
- Analytical and Testing Center
- Sichuan University
- Chengdu
- China
| | - Yunmao Liao
- Research Center for Nano-Biomaterials
- Analytical and Testing Center
- Sichuan University
- Chengdu
- China
| | - Jing Hu
- State Key Laboratory of Oral Diseases and Department of Oral and Maxillofacial Surgery
- West China Hospital of Stomatology
- Sichuan University
- Chengdu
- China
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Peng W, Zheng W, Shi K, Wang W, Shao Y, Zhang D. An
in vivo
evaluation of PLLA/PLLA-gHA nano-composite for internal fixation of mandibular bone fractures. Biomed Mater 2015; 10:065007. [DOI: 10.1088/1748-6041/10/6/065007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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CHEN LIN, LI BAOLIN, XIAO XIAO, MENG QINGGANG, LI WEI, YU QIAN, BI JIAQI, CHENG YONG, QU ZHIWEI. Preparation and evaluation of an Arg-Gly-Asp-modified chitosan/hydroxyapatite scaffold for application in bone tissue engineering. Mol Med Rep 2015; 12:7263-70. [PMID: 26459053 PMCID: PMC4626170 DOI: 10.3892/mmr.2015.4371] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 08/07/2015] [Indexed: 11/26/2022] Open
Abstract
Bone tissue engineering has become a promising method for the repair of bone defects, and the production of a scaffold with high cell affinity and osseointegrative properties is crucial for successful bone substitute. Chitosan (CS)/hydroxyapatite (HA) composite was prepared by in situ compositing combined with lyophilization, and further modified by arginine‑glycine‑aspartic acid (RGD) via physical adsorption. In order to evaluate the cell adhesion rate, viability, morphology, and alkaline phosphatase (ALP) activity, the RGD‑CS/HA scaffold was seeded with bone marrow stromal cells (BMSCs). The osseointegrative properties of the RGD‑CS/HA scaffold were evaluated by in vivo heterotopic ossification and in vivo bone defect repair. After 4 h culture with the RGD‑CS/HA scaffold, the adhesion rate of the BMSCs was 80.7%. After 3 days, BMSCs were fusiform in shape and evenly distributed on the RGD‑CS/HA scaffold. Formation of extracellular matrix and numerous cell‑cell interactions were observed after 48 h of culture, with an ALP content of 0.006 ± 0.0008 U/l/ng. Furthermore, the osseointegrative ability and biomechanical properties of the RGD‑CS/HA scaffold were comparable to that of normal bone tissue. The biocompatibility, cytocompatibility, histocompatibility and osseointegrative properties of the RGD‑CS/HA scaffold support its use in bone tissue engineering applications.
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Affiliation(s)
- LIN CHEN
- Department of Pathogenic Microorganisms, The Second Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - BAOLIN LI
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - XIAO XIAO
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - QINGGANG MENG
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - WEI LI
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - QIAN YU
- Department of Orthopedics, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - JIAQI BI
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - YONG CHENG
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - ZHIWEI QU
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Correspondence to: Professor Zhiwei Qu, Department of Orthopaedic Surgery, The First Hospital of Harbin City, Harbin Medical University, 149 Mai Mai Street, Daoli, Harbin, Heilongjiang 150001, P.R. China, E-mail:
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Zhang H, Han J, Sun Y, Huang Y, Zhou M. MC3T3-E1 cell response to stainless steel 316L with different surface treatments. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 56:22-9. [DOI: 10.1016/j.msec.2015.06.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 04/29/2015] [Accepted: 06/09/2015] [Indexed: 01/20/2023]
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Zhang L, Ge S, Liu H, Wang Q, Wang L, Xian CJ. Contact damage failure analyses of fretting wear behavior of the metal stem titanium alloy–bone cement interface. J Mech Behav Biomed Mater 2015; 51:132-46. [DOI: 10.1016/j.jmbbm.2015.06.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 06/20/2015] [Accepted: 06/23/2015] [Indexed: 11/26/2022]
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Badalihan A, Aihemaiti A, Shawutali N, Jielile J, Jialihasi A, Tangkejie W, Nuerdoula Y, Satewalede T, Hunapiya B, Niyazebieke H, Hezibieke H, Zhao Q, Bahetijiang A, Kelamu M, Qianman B. Outcome of a one-stage tensile stress surgical technique and early postoperative rehabilitation in the treatment of neglected achilles tendon rupture. J Foot Ankle Surg 2015; 54:153-9. [PMID: 25703445 DOI: 10.1053/j.jfas.2014.12.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Indexed: 02/03/2023]
Abstract
The present study evaluated the effect of single-stage internal traction combined with early postoperative active rehabilitation and the yurt bone suture method, a new surgical technique, on the clinical outcomes after surgical repair of Achilles tendon. A total of 51 patients with neglected Achilles tendon rupture who underwent the yurt bone suture treatment also participated in an accelerated postoperative rehabilitation program. The clinical outcome was evaluated for 18 weeks using the Leppilahti scoring system, bilateral ultrasound examination, and computed tomography examination. The ultrasound and computed tomography examinations revealed that Achilles tendon elongation and adhesion occurred in none of the patients. All the patients could perform the single leg heel raise exercise for a mean of 30 ± 7.6 seconds at 12 weeks postoperatively. In addition, the patients could participate in sport exercises and heavy physical activities by around 13 weeks postoperatively. The mean Leppilahti score was 85.8 ± 3.7 at 8 weeks postoperatively, and it had increased to 96.1 ± 3.2 and 100.0 ± 0.0 at 12 and 18 weeks, respectively, after the operation. The 1-stage internal traction technique, combined with early postoperative active rehabilitation and the yurt bone surgical technique, resulted in good clinical outcomes for the treatment of neglected Achilles tendon rupture.
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Affiliation(s)
- Ayinazi Badalihan
- Orthopedist, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China
| | | | - Nuerai Shawutali
- Orthopedist, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Jiasharete Jielile
- Assistant Professor, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China.
| | - Ayidaer Jialihasi
- Orthopedist, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Wulanbai Tangkejie
- Orthopedist, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Yeermike Nuerdoula
- Orthopedist, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Turde Satewalede
- Orthopedist, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Beisen Hunapiya
- Orthopedist, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Hadelebieke Niyazebieke
- Surgeon, Department of Orthopaedics, Kazakh Traditional Medical Hospital of Toli County, Tacheng Prefecture, Toli County, Xinjiang, China
| | - Hayilat Hezibieke
- Orthopedist, Department of Orthopaedics, People's Hospital of Shawan County, Shawan, Xinjiang, China
| | - Qin Zhao
- Associate Professor, Department of Ultrasonographic Examination, Institute of Medical Image Canter, First Teaching Hospital of Xinjiang Medical University, Urumqi, China
| | - Ahezhuoli Bahetijiang
- Orthopedist, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Mailamuguli Kelamu
- Orthopedist, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Bayixiati Qianman
- Orthopedist, Department of Orthopaedics Centre, First Teaching Hospital of Xinjiang Medical University, Kazakh Medical Association of Xinjiang Uygur Autonomous Region, and Sports Medicine Research Centre of Orthopaedics Research Institute, Xinjiang Uygur Autonomous Region, Urumqi, China
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Liu LH, Guo CT, Zhou Q, Pu XB, Song L, Wang HM, Zhao C, Cheng SM, Lan YJ, Liu L. Biomechanical comparison of anterior lumbar screw-plate fixation versus posterior lumbar pedicle screw fixation. ACTA ACUST UNITED AC 2014; 34:907-911. [DOI: 10.1007/s11596-014-1372-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 06/30/2014] [Indexed: 11/24/2022]
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Guo KJ, Zhao FC, Guo Y, Li FL, Zhu L, Zheng W. The influence of age, gender and treatment with steroids on the incidence of osteonecrosis of the femoral head during the management of severe acute respiratory syndrome: a retrospective study. Bone Joint J 2014; 96-B:259-62. [PMID: 24493194 DOI: 10.1302/0301-620x.96b2.31935] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Corticosteroid use has been implicated in the development of osteonecrosis of the femoral head (ONFH). The exact mechanism and predisposing factors such as age, gender, dosage, type and combination of steroid treatment remain controversial. Between March and July 2003, a total of 539 patients with severe acute respiratory syndrome (SARS) were treated with five different types of steroid. There were 129 men (24%) and 410 women (76%) with a mean age of 33.7 years (21 to 59). Routine screening was undertaken with radiographs, MRI and/or CT to determine the incidence of ONFH. Of the 129 male patients with SARS, 51 (39.5%) were diagnosed as suffering from ONFH, compared with only 79 of 410 female patients (19.3%). The incidence of ONFH in the patients aged between 20 and 49 years was much higher than that of the group aged between 50 and 59 years (25.9% (127 of 491) versus 6.3% (3 of 48); p = 0.018). The incidence of ONFH in patients receiving one type of steroid was 12.5% (21 of 168), which was much lower than patients receiving two different types (28.6%; 96 of 336) or three different types of steroid (37.1%; 13 of 35).
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Affiliation(s)
- K J Guo
- Affiliated Hospital of Xuzhou Medical College, Department of Orthopedic Surgery, Xuzhou, Jiangsu 221002, China
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Characterisation of the surface topography, tomography and chemistry of fretting corrosion product found on retrieved polished femoral stems. J Mech Behav Biomed Mater 2013; 32:321-334. [PMID: 24387879 DOI: 10.1016/j.jmbbm.2013.11.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 11/14/2013] [Accepted: 11/21/2013] [Indexed: 11/20/2022]
Abstract
This study presents the characterisation of the surface topography, tomography and chemistry of fretting corrosion product found on retrieved polished femoral stems. Scanning Electron Microscopy (SEM), X-ray Photoelectron Spectroscopy (XPS), Transmission Electron Microscopy (TEM) and Fourier Transform Infrared Spectroscopy (FI-IR) were utilised in order to assess the surface morphology of retrieved Metal-on-Metal Total Hip Replacements and surface chemistry of the films found on the surface. Gross slip, plastic deformation and directionality of the surface were extensively seen on the proximal surfaces of the retrievals. A more corrosive phenomenon was observed in the distal regions of the stem, demonstrating a seemingly intergranular attack. Tribochemical reactions were seen to occur within the stem-cement interfaces with tribofilms being observed on the femoral stem and counterpart PMMA bone cement. XPS, TEM-EDX and FT-IR analyses demonstrated that the films present in the stem surfaces were a complex mixture of chromium oxide and amorphous organic material. A comparison between current experimental and clinical literature has been conducted and findings from this study demonstrate that the formation and chemistry of films are drastically influenced by the type of wear or degradation mechanism. Films formed in the stem-cement interface are thought to further influence the biological environment outside the stem-cement interface due to the formation of Cr and O rich films within the interface whilst Co is free to migrate away.
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Zhang HY, Luo JB, Zhou M, Zhang Y, Huang YL. Biotribological properties at the stem-cement interface lubricated with different media. J Mech Behav Biomed Mater 2013; 20:209-16. [PMID: 23518686 DOI: 10.1016/j.jmbbm.2013.01.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 01/04/2013] [Accepted: 01/06/2013] [Indexed: 11/16/2022]
Abstract
BACKGROUND Debonding of the stem-cement interface occurs inevitably in-vivo under physiological loading, and pseudo-synovial fluid is subsequently pumped into this interface, serving as the lubricant. However, the influence of protein adsorption onto the femoral stem surface has not been well taken into consideration in previous in vitro studies. MATERIALS AND METHODS The biotribological properties at the stem-cement interface were investigated through a series of fretting frictional tests using polished stainless steel 316L stem and smooth bone cement, lubricated by three different media at body temperature, i.e. 100% calf serum, 25% calf serum, and 0.9% saline solution. The surface characterization of the femoral stem was evaluated sequentially using optical microscope, optical interferometer, scanning electron microscope, and Raman spectroscopy. RESULTS The friction coefficient generally kept stable during the test, and the minimum value (0.254) was obtained when 100% calf serum was used as the lubricant. Slight scratches were detected within the contact area for the stainless steel 316L stems lubricated by 100% calf serum and 25% calf serum, which was further surrounded by the adsorbed protein film with alveolate feature. Additionally, a wear scar was present within the contact area when 0.9% saline solution was used as the lubricant. CONCLUSIONS Protein adsorption onto the stainless steel 316L stem surface affected the biotribological properties at the stem-cement interface under oscillatory fretting mechanism. Generation of wear debris at the stem-cement interface may be postponed by modification of physicochemical properties of the femoral stem to promote protein adsorption.
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Affiliation(s)
- H Y Zhang
- State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China.
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