نتایج جستجو برای: Orthopedic Bone Implant

تعداد نتایج: 352511  

2012
PS Vijayalakshmi AS Veereshi Vijay P Jayade MR Dinesh Mukesh Kumar

Biomechanical influences on bone structure play an important role in the longevity of bone around an implant. The quantity and direction of applied force influence the implant and cause deformation of the bone. FEA was used to analyze the changes in the bone on loading the implant with orthodontic force in oblique and vertical directions and orthopedic force. The Mini-implants used in the prese...

ژورنال: مجله دندانپزشکی 2000
فتحی, محمدحسین, مرتضوی, وجیه السادات,

Characterization of bioceramics coating and evaluation of the influence of kind of coating on the implantation has been developed in recent years.Different bioceramics coating like calcium phosphate, hydroxyapatite, fluorapatite and bioglass were coated on dental and orthopedic implants. In-vitro and in-vivo experiments were done for evolution of implant success and reliability and study of fac...

Journal: :International Journal of Nanomedicine 2007
Lester J Smith John S Swaim Chang Yao Karen M Haberstroh Eric A Nauman Thomas J Webster

There are more than 30,000 orthopedic implant revision surgeries necessary each year in part due to poor implant fixation with juxtaposed bone. A further emphasis on the current problems associated with insufficient bone implant performance is the fact that many patients are receiving hip implants earlier in life, remaining active older, and that the human lifespan is continuously increasing. C...

2006
Ganesan Balasundaram Thomas J. Webster

In the past, synthetic conventional materials have not served as satisfactory implants. As an example, the current average lifetime of an orthopedic implant (such as hip, knee, ankle, etc.) is only 10 to 15 years. Clearly, such conventional materials (or those materials with constituent dimensions greater than 1 micron) have not invoked suitable cellular responses to regenerate enough bone to a...

2012
Yan Lu Jae Sung Lee Brett Nemke Ben K. Graf Kevin Royalty Richard Illgen Ray Vanderby Mark D. Markel William L. Murphy

Despite the potential for growth factor delivery strategies to promote orthopedic implant healing, there is a need for growth factor delivery methods that are controllable and amenable to clinical translation. We have developed a modular bone growth factor, herein termed "modular bone morphogenetic peptide (mBMP)", which was designed to efficiently bind to the surface of orthopedic implants and...

Journal: :Journal of biomedical materials research. Part A 2006
Bastian Peter Olivier Gauthier Samia Laïb Bruno Bujoli Jérôme Guicheux Pascal Janvier G Harry van Lenthe Ralph Müller Pierre-Yves Zambelli Jean-Michel Bouler Dominique P Pioletti

Patients with osteoporosis and joint disabilities represent a constant growing and challenging population to be treated in the musculoskeletal clinical field. Especially in the case of total hip arthroplasty, new solutions should be developed to compensate for the double negative factors, peri-implant osteolysis, and osteoporotic bone loss, affecting the quality of implant outcome. The goal of ...

2006
Lijie Zhang Sharwatie Ramsaywack Hicham Fenniri Thomas Webster

With the rapid development of orthopedic implant technology, various bone implant surgeries and procedures (such as bone fractures, repairing defects, and hip and knee replacements) are routinely performed. Although these surgeries are usually successful operations for up to 15 years, implant failure due to loosening of the prostheses does occur for active or heavy patients. Other patients rece...

Journal: :Injury-international Journal of The Care of The Injured 2021

Implant loosening, bone healing failure, implant-associated infections, and large bony defects remain challenges in orthopedic surgery. surface modifications coatings are being developed to promote osteointegration, prevent colonization by bacteria, release bioactive factors. The following mini-review briefly discusses the clinical problem, explains four “osteos”, presents examples of used for ...

2015
Kiat Hwa Chan Shuangmu Zhuo Ming Ni

The development of better orthopedic implants is incessant. While current implants can function reliably in the human body for a long period of time, there are still a significant number of cases for which the implants can fail prematurely due to poor osseointegration of the implant with native bone. Increasingly, it is recognized that it is extremely important to facilitate the attachment of o...

Journal: :European cells & materials 2010
A J Wirth R Müller G H van Lenthe

For many years orthopedic implants were developed for patients with good bone stock. Recently it has become clear that these implants have a decreased performance when implanted in bone with low density, such as in osteoporosis. Reduced performance in osteoporotic bone is not unexpected because of the reduced quality of the peri-implant bone and the reduced bone-implant contact area. Neverthele...

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