Author: Josa Ann Hanzlik
Publisher:
ISBN:
Category : Biomedical engineering
Languages : en
Pages :
Book Description
Recent Nationwide Inpatient Sample (NIS) studies have shown that implant loosening remains one of the common reasons for revision in total joint replacement. In an effort to reduce loosening caused by long-term breakdown of the cement mantle, manufacturers introduced cementless technologies to provide biological fixation by hard tissue ingrowth at the bone-implant interface. One new material, porous tantalum, has had promising clinical results with well-fixed implants and relatively few reported cases of loosening. The factors that may be causing the lower incidence of aseptic loosening remain unknown. Therefore, the goal of this dissertation was to investigate the factors affecting bone fixation in porous tantalum implants through retrieval analysis and finite element (FE) modeling. Through the Implant Research Center0́9s retrieval program, the proportion of implants revised for aseptic loosening was compared between the porous tantalum implants and historical porous-coated implants. Retrieval analysis protocols were developed to assess and determine factors that affect bone ingrowth in porous tantalum hip and knee implants. Porous tantalum tibial trays were histologically analyzed to determine locations of fibrous tissue or bone ingrowth. The results showed that the amount of bone observed varied by implant type and location within each implant for retrieved porous tantalum acetabular shells, femoral stems, patellas and tibial trays. Retrieval results showed that modular tibial tray implants had higher bone ingrowth than the monoblock tibial trays. However, the bone ingrowth in the porous tantalum was lower than that observed in historical porous-coated implants. Histological analyses of tibial trays demonstrated bone ingrowth primarily in the superficial depth of the tibial trays, with fibrous tissue also present. The FE models showed that there was more favorable initial implant stability in the modular tibial tray compared to the monoblock implant. This study showed that the lower incidence of aseptic loosening did not appear to be associated with increased bone ingrowth for the retrieved porous tantalum hip and knee implants. Initial FE models showed that lower micromotion for the modular tibial tray compared the monoblock. This dissertation presents a multifaceted approach for analysis of highly porous biomaterials.
Retrieval Analysis and Finite Element Modeling of Orthopaedic Porous-Coated Implants
Author: Josa Ann Hanzlik
Publisher:
ISBN:
Category : Biomedical engineering
Languages : en
Pages :
Book Description
Recent Nationwide Inpatient Sample (NIS) studies have shown that implant loosening remains one of the common reasons for revision in total joint replacement. In an effort to reduce loosening caused by long-term breakdown of the cement mantle, manufacturers introduced cementless technologies to provide biological fixation by hard tissue ingrowth at the bone-implant interface. One new material, porous tantalum, has had promising clinical results with well-fixed implants and relatively few reported cases of loosening. The factors that may be causing the lower incidence of aseptic loosening remain unknown. Therefore, the goal of this dissertation was to investigate the factors affecting bone fixation in porous tantalum implants through retrieval analysis and finite element (FE) modeling. Through the Implant Research Center0́9s retrieval program, the proportion of implants revised for aseptic loosening was compared between the porous tantalum implants and historical porous-coated implants. Retrieval analysis protocols were developed to assess and determine factors that affect bone ingrowth in porous tantalum hip and knee implants. Porous tantalum tibial trays were histologically analyzed to determine locations of fibrous tissue or bone ingrowth. The results showed that the amount of bone observed varied by implant type and location within each implant for retrieved porous tantalum acetabular shells, femoral stems, patellas and tibial trays. Retrieval results showed that modular tibial tray implants had higher bone ingrowth than the monoblock tibial trays. However, the bone ingrowth in the porous tantalum was lower than that observed in historical porous-coated implants. Histological analyses of tibial trays demonstrated bone ingrowth primarily in the superficial depth of the tibial trays, with fibrous tissue also present. The FE models showed that there was more favorable initial implant stability in the modular tibial tray compared to the monoblock implant. This study showed that the lower incidence of aseptic loosening did not appear to be associated with increased bone ingrowth for the retrieved porous tantalum hip and knee implants. Initial FE models showed that lower micromotion for the modular tibial tray compared the monoblock. This dissertation presents a multifaceted approach for analysis of highly porous biomaterials.
Publisher:
ISBN:
Category : Biomedical engineering
Languages : en
Pages :
Book Description
Recent Nationwide Inpatient Sample (NIS) studies have shown that implant loosening remains one of the common reasons for revision in total joint replacement. In an effort to reduce loosening caused by long-term breakdown of the cement mantle, manufacturers introduced cementless technologies to provide biological fixation by hard tissue ingrowth at the bone-implant interface. One new material, porous tantalum, has had promising clinical results with well-fixed implants and relatively few reported cases of loosening. The factors that may be causing the lower incidence of aseptic loosening remain unknown. Therefore, the goal of this dissertation was to investigate the factors affecting bone fixation in porous tantalum implants through retrieval analysis and finite element (FE) modeling. Through the Implant Research Center0́9s retrieval program, the proportion of implants revised for aseptic loosening was compared between the porous tantalum implants and historical porous-coated implants. Retrieval analysis protocols were developed to assess and determine factors that affect bone ingrowth in porous tantalum hip and knee implants. Porous tantalum tibial trays were histologically analyzed to determine locations of fibrous tissue or bone ingrowth. The results showed that the amount of bone observed varied by implant type and location within each implant for retrieved porous tantalum acetabular shells, femoral stems, patellas and tibial trays. Retrieval results showed that modular tibial tray implants had higher bone ingrowth than the monoblock tibial trays. However, the bone ingrowth in the porous tantalum was lower than that observed in historical porous-coated implants. Histological analyses of tibial trays demonstrated bone ingrowth primarily in the superficial depth of the tibial trays, with fibrous tissue also present. The FE models showed that there was more favorable initial implant stability in the modular tibial tray compared to the monoblock implant. This study showed that the lower incidence of aseptic loosening did not appear to be associated with increased bone ingrowth for the retrieved porous tantalum hip and knee implants. Initial FE models showed that lower micromotion for the modular tibial tray compared the monoblock. This dissertation presents a multifaceted approach for analysis of highly porous biomaterials.
Finite Element Analysis of Bone Remodeling Around Porous-coated Dental Implants [microform]
Author: Hélène Vaillancourt
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN: 9780315928350
Category :
Languages : en
Pages : 372
Book Description
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN: 9780315928350
Category :
Languages : en
Pages : 372
Book Description
Stress Analysis of Intramedullary Implants with Porous Coatings by the Finite Element Method
Author: Kenneth Raymond St. John
Publisher:
ISBN:
Category :
Languages : en
Pages : 136
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 136
Book Description
Retrieval and Analysis of Orthopaedic Implants
Author: Allan Weinstein
Publisher:
ISBN:
Category : Metals in surgery
Languages : en
Pages : 144
Book Description
Publisher:
ISBN:
Category : Metals in surgery
Languages : en
Pages : 144
Book Description
A Finite Element Stress Analysis of Porous-metal Implant Coatings
Author: Phillip Byron Messersmith
Publisher:
ISBN:
Category :
Languages : en
Pages : 122
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 122
Book Description
Application of the Finite Element Method in Implant Dentistry
Author: Jianping Geng
Publisher: Springer Science & Business Media
ISBN: 3540737642
Category : Technology & Engineering
Languages : en
Pages : 148
Book Description
This book creates the theoretical foundation that novices need to perform the finite element method in implant dentistry. It shows how both the implant dentist and the designer can benefit from finite element analysis. The authors explain the theory and math of the finite element method. Then, you get practical applications alongside discussions of the critical issues in using finite element analysis for dental implant design.
Publisher: Springer Science & Business Media
ISBN: 3540737642
Category : Technology & Engineering
Languages : en
Pages : 148
Book Description
This book creates the theoretical foundation that novices need to perform the finite element method in implant dentistry. It shows how both the implant dentist and the designer can benefit from finite element analysis. The authors explain the theory and math of the finite element method. Then, you get practical applications alongside discussions of the critical issues in using finite element analysis for dental implant design.
Mechanical Testing of Orthopaedic Implants
Author: Elizabeth Friis
Publisher: Woodhead Publishing
ISBN: 008100284X
Category : Medical
Languages : en
Pages : 274
Book Description
Mechanical Testing of Orthopaedic Implants provides readers with a thorough overview of the fundamentals of orthopedic implants and various methods of mechanical testing. Historical aspects are presented, along with case studies that are particularly useful for readers. Presents information on a range of implants, from dental to spinal implants Includes case studies throughout that help the reader understand how the content of the book is applied in practice Provides coverage and guidance on FDA regulations and requirements Focuses on application of mechanical testing methods
Publisher: Woodhead Publishing
ISBN: 008100284X
Category : Medical
Languages : en
Pages : 274
Book Description
Mechanical Testing of Orthopaedic Implants provides readers with a thorough overview of the fundamentals of orthopedic implants and various methods of mechanical testing. Historical aspects are presented, along with case studies that are particularly useful for readers. Presents information on a range of implants, from dental to spinal implants Includes case studies throughout that help the reader understand how the content of the book is applied in practice Provides coverage and guidance on FDA regulations and requirements Focuses on application of mechanical testing methods
Journal of Rehabilitation Research and Development
Journal of Rehabilitation Research & Development
Core Knowledge in Orthopaedics: Adult Reconstruction and Arthroplasty
Author: Jonathan Garino
Publisher: Elsevier Health Sciences
ISBN: 0323033709
Category : Medical
Languages : en
Pages : 360
Book Description
This volume in the Core Knowledge in Orthopaedics Series equips you with the key concepts and clinical skills needed to excel in the subspecialty of adult reconstruction and arthroplasty. Inside you'll find concise, clinically focused coverage of the surgical techniques you need to know to obtain optimal patient management outcomes, along with relevant anatomy, biomechanics, limb salvage techniques, imaging, arthroscopy, and more. It's a perfect resource for training...board certification or recertification review...or everyday clinical reference! Apply the guidance in a logical fashion with coverage that progresses from describing commonly seen clinical problems to reviewing less frequently encountered conditions. Follow the most appropriate surgical management approaches. Assimilate the information easily through bulleted text, crisp artwork, clinical charts, tables, algorithms, and annotated key references.
Publisher: Elsevier Health Sciences
ISBN: 0323033709
Category : Medical
Languages : en
Pages : 360
Book Description
This volume in the Core Knowledge in Orthopaedics Series equips you with the key concepts and clinical skills needed to excel in the subspecialty of adult reconstruction and arthroplasty. Inside you'll find concise, clinically focused coverage of the surgical techniques you need to know to obtain optimal patient management outcomes, along with relevant anatomy, biomechanics, limb salvage techniques, imaging, arthroscopy, and more. It's a perfect resource for training...board certification or recertification review...or everyday clinical reference! Apply the guidance in a logical fashion with coverage that progresses from describing commonly seen clinical problems to reviewing less frequently encountered conditions. Follow the most appropriate surgical management approaches. Assimilate the information easily through bulleted text, crisp artwork, clinical charts, tables, algorithms, and annotated key references.