نتایج جستجو برای: graft biomechanical properties

تعداد نتایج: 965363  

2009
K. Madhavan D. Belchenko W. Tan

Biomechanical properties of a vascular graft scaffold can be optimized by studying the effect of genipin crosslinker. Collagen-based scaffolds were prepared from a mixture of rat tail collagen, chitosan and bovine aortic elastin and crosslinked with varying concentrations of genipin. Biomechanical testing results showed that the linear modulus of the uncrosslinked samples had the least modulus ...

Journal: :The American journal of sports medicine 2003
David H Kim David R Wilson Aaron T Hecker Tobias M Jung Charles H Brown

BACKGROUND Twisting and braiding of four-strand hamstring tendon grafts used for anterior cruciate ligament reconstruction has been proposed, but not proven, as a method of improving tensile properties. HYPOTHESIS Twisting and braiding four-strand human hamstring tendon grafts will have no significant effect on initial graft strength or stiffness. STUDY DESIGN Paired in vitro biomechanical ...

Journal: :Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association 2011
Hemang B Panchal Jon K Sekiya

PURPOSE The optimal method of posterior cruciate ligament (PCL) reconstruction is not known. The purpose was to evaluate the biomechanical and clinical literature comparing open tibial inlay and arthroscopic transtibial PCL reconstructions and determine which method of reconstruction is superior. METHODS A systematic review of the literature was performed on PubMed. Biomechanical and clinical...

Background: Reconstructions of acute acromioclavicular (AC) dislocations have been thought to result in superioroutcomes than chronic dislocations. The use of tendon graft in reconstructions has demonstrated favorablebiomechanical properties. To determine whether utilizing tendon graft during repair of acute AC dislocations results insuperior outcomes and lower complication ra...

2015
Quinlan Gupta Masood

Purpose: To study the effect of biomechanical properties of the cornea on the intraocular pressure in eyes affected with Mucopolysaccharidosis type I-S (Scheie's syndrome). Methods: Four eyes of two patients in their mid-fifties diagnosed with Scheie's syndrome were investigated for corneal biomechanical properties. The corneal biomechanical profile was assessed by the use of Ocular response an...

2011
Ho-Joong Jung Gautum Vangipuram Matthew B Fisher Guoguang Yang Shanling Hsu John Bianchi Chad Ronholdt Savio L-Y Woo

Soft tissue allografts, such as the bone-patellar tendon-bone (BPTB) graft, have been frequently used for anterior cruciate ligament (ACL) reconstruction. As allografts are subjected to freezing and thawing for multiple cycles, the objective of this study was to measure the changes of the biomechanical properties of the human BPTB allograft after 4 and 8 freeze-thaw cycles in comparison to a si...

Journal: :journal of dentistry, tehran university of medical sciences 0
azam valian assistant professor, department of restorative dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. elham moravej-salehi assistant professor, department of restorative dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. allahyar geramy professor, dental research center dentistry research institute, department of orthodontics, tehran university of medical sciences, tehran, iran. elham faramarzi dentist.

controversy exists regarding cavity preparation for restoration of interproximal caries in posterior teeth in terms of preserving the tooth structure and suitable stress distribution. this study aimed to assess the effect of extension and type of class ii cavities and the remaining tooth structure in maxillary premolars restored with composite resin on the biomechanical properties of teeth usin...

Journal: :Clinics in sports medicine 2007
Keith W Lawhorn Stephen M Howell

The use of autogenous hamstring tendon as a graft source for anterior cruciate ligament (ACL) reconstruction continues to gain in popularity. The low harvest morbidity and excellent biomechanical graft properties coupled with improved fixation of soft tissue grafts are all reasons for excellent clinical outcomes of ACL reconstruction using hamstring tendons. In addition, surgeon awareness of th...

2015
Dongmin Xiao Ming Ye Xinfa Li Lifeng Yang

BACKGROUND The aim of this study was to develop and perform the 3D finite element analysis of a femoral head interior supporting device (FHISD). MATERIAL AND METHODS The 3D finite element model was developed to analyze the surface load of femoral head and analyze the stress and strain of the femoral neck, using the normal femoral neck, decompressed bone graft, and FHISD-implanted bone graft m...

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