نتایج جستجو برای: biomechanical strength

تعداد نتایج: 224706  

Journal: :Aesthetic surgery journal 2006
Angela Y Song Morad Askari Erdrin Azemi Sean Alber Dennis J Hurwitz Kacey G Marra Kenneth C Shestak Richard Debski J Peter Rubin

BACKGROUND Surgical repair of the superficial fascial system (SFS) has been claimed to both increase wound strength and enhance surgical outcome through anchoring of deeper tissues. OBJECTIVE The authors assessed the biomechanical properties of the SFS to determine whether repair of the SFS layer improved early and long-term postoperative wound strength. METHODS Four complementary studies w...

2014
Ulrich Spiegl Sean Smith Simon A. Euler Grant Dornan Peter J. Millett Coen A. Wijdicks

BACKGROUND Lateral clavicle fractures have been reported after coracoclavicular (CC) ligament reconstructions with bone tunnels through the clavicle. PURPOSE To biomechanically compare clavicle strength following 2 common CC reconstruction techniques with different bone tunnel diameters. STUDY DESIGN Controlled laboratory study. METHODS Testing was performed on 2 groups of matched-pair ca...

Journal: :iranian red crescent medical journal 0
mohammadjavad freidouni department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran hossein nejati faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran maryam salimi department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran mohammad bayat department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran; department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran. tel/fax: +98-2122439976 abdollah amini department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran mohsen noruzian department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran

conclusions in contrast to the findings in humans and certain other species, glucocorticoid administration caused anabolic effect on the cortical bone of tibia diaphysis bone in rats. results glucocorticoid-treated rats showed weight loss and considerable mortality (21%). the biomechanical properties (maximum force) of glucocorticoid-treated rats in groups 4 (62 ± 2.9), 6 (63 ± 5.1), and 7 (60 ...

2015
Joseph G Chimungu Kenneth W Loades Jonathan P Lynch

The ability of roots to penetrate hard soil is important for crop productivity but specific root phenes contributing to this ability are poorly understood. Root penetrability and biomechanical properties are likely to vary in the root system dependent on anatomical structure. No information is available to date on the influence of root anatomical phenes on root penetrability and biomechanics. R...

Journal: :Acta orthopaedica Belgica 2001
U Liljenqvist L Hackenberg T Link H Halm

While the biomechanical properties of pedicle screws have proven to be superior in the lumbar spine, little is known concerning pullout strength of pedicle screws in comparison to hooks in the thoracic spine. In vitro biomechanical pullout testing was performed to evaluate the axial pullout strength of pedicle screws versus pedicle and laminar hooks in the thoracic spine with regard to surgical...

Journal: :Tissue engineering. Part B, Reviews 2009
David L Butler Steven A Goldstein Robert E Guldberg X Edward Guo Roger Kamm Cato T Laurencin Larry V McIntire Van C Mow Robert M Nerem Robert L Sah Louis J Soslowsky Robert L Spilker Robert T Tranquillo

Biomechanical factors profoundly influence the processes of tissue growth, development, maintenance, degeneration, and repair. Regenerative strategies to restore damaged or diseased tissues in vivo and create living tissue replacements in vitro have recently begun to harness advances in understanding of how cells and tissues sense and adapt to their mechanical environment. It is clear that biom...

Journal: :Journal of hand therapy : official journal of the American Society of Hand Therapists 2012
Kristin Valdes Rebecca von der Heyde

UNLABELLED A review of the literature was performed to design a hand exercise regimen based on biomechanical principles of the carpometacarpal (CMC) joint and the forces that act upon the joint. Sixteen biomechanical studies were included in the review: four studies developed a mathematical model of the thumb and 12 performed cadaveric dissections to study the CMC joint. Clinical application of...

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 ...

2011
Xie Wu Songning Zhang Dongbin Zhang Chenbin Xie

Landing is a common movement task used in investigating impact attenuation and mechanisms of impact related lower extremities injury [1-5]. In the literature, there is limited biomechanical information regarding the relationship between eccentric strength of lower extremities and impact related biomechanics in landing. It is still unclear what roles of lower extremity eccentric strength plays i...

Journal: :Archives of facial plastic surgery 2007
Richard W Westreich Hayden-William Courtland Philip Nasser Karl Jepsen William Lawson

OBJECTIVE To define the modulus of elasticity for nasal septum, auricular, upper lateral, and lower lateral cartilages. METHODS Prospective enrollment of sequential patients undergoing septorhinoplasty. Test samples were obtained through routine surgical interventions using atraumatic harvesting techniques. The modulus of elasticity was determined using a customized biomechanical testing devi...

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