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Keywords: stiffness
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Journal Articles
Article Type: Technical Briefs
J Biomech Eng. November 2022, 144(11): 114502.
Paper No: BIO-22-1058
Published Online: July 1, 2022
...Luke Nigro; Elisa S. Arch Natural ankle quasi-stiffness (NAS) is a mechanical property of the ankle joint during dynamic motion. NAS has been historically calculated as the average slope (linear regression) of the net ankle moment versus ankle angle during discrete phases of stance. However, recent...
Journal Articles
Article Type: Technical Briefs
J Biomech Eng. November 2022, 144(11): 114503.
Paper No: BIO-22-1061
Published Online: July 1, 2022
... properties of the annulus. e-mail:  sino9020@mylaurier.ca 1 Corresponding author. e-mail:  dgregory@wlu.ca 28 02 2022 06 06 2022 01 07 2022 annulus fibrosus intervertebral disc biomechanics tensile properties stiffness Natural Sciences and Engineering Research...
Journal Articles
Article Type: Technical Briefs
J Biomech Eng. April 2022, 144(4): 044503.
Paper No: BIO-21-1188
Published Online: December 15, 2021
...@uscmed.sc.edu e-mail:  jay.humphrey@yale.edu 17 05 2021 14 10 2021 15 12 2021 hypertension Marfan syndrome extracellular matrix remodeling stiffness phenotype National Institutes of Health 10.13039/100000002 R01 HL145064 National Science Foundation 10.13039...
Journal Articles
Article Type: Technical Briefs
J Biomech Eng. February 2021, 143(2): 024501.
Paper No: BIO-20-1065
Published Online: October 8, 2020
... SPARC-null (n = 36) and WT (n = 18) mice aged 14–25 months were subjected to cyclic axial tension and compression to determine neutral zone (NZ) length and stiffness. Three separate mechanical tests were completed for each spine to determine the effect of the number of IVDs tested in series (one versus...
Journal Articles
Article Type: Review Articles
J Biomech Eng. October 2020, 142(10): 100804.
Paper No: BIO-20-1105
Published Online: August 31, 2020
... pathological development in the cells; pathological or aging cells, on the other hand, can alter their micro-environment to become abnormal. In this minireview, we discuss four important biophysical cues of the micro-environment—stiffness, curvature, extracellular matrix (ECM) architecture and viscosity...
Journal Articles
Article Type: Research-Article
J Biomech Eng. August 2020, 142(8): 081008.
Paper No: BIO-19-1561
Published Online: June 17, 2020
...Alex M. Noonan; Derek P. Zwambag; Nicole Mazara; Erin Weersink; Geoffrey A. Power; Stephen H. M. Brown Studies on single muscle fiber passive material properties often report relatively large variation in elastic modulus (or normalized stiffness), and it is not clear where this variation arises...
Includes: Supplementary data
Journal Articles
Article Type: Research-Article
J Biomech Eng. July 2020, 142(7): 071005.
Paper No: BIO-19-1033
Published Online: March 4, 2020
... , A. , Felmlee , J. P. , and Ehman , R. L. , 2011 , “ Decreased Brain Stiffness in Alzheimer's Disease Determined by Magnetic Resonance Elastography ,” J. Magn. Reson. Imaging , 34 ( 3 ), pp. 494 – 498 . 10.1002/jmri.22707 [15] Lipp , A. , Trbojevic , R. , Paul , F...
Journal Articles
Article Type: Research-Article
J Biomech Eng. September 2019, 141(9): 091008.
Paper No: BIO-19-1087
Published Online: August 2, 2019
..., HR-pQCT scans were performed on the standard scan segment, a segment distal to the standard segment, and a segment proximal to the standard segment. Whole distal radius and tibia stiffness were determined through mechanical testing. Segment bone stiffness was estimated using linear finite element (FE...
Journal Articles
Article Type: Research-Article
J Biomech Eng. October 2013, 135(10): 101009.
Paper No: BIO-13-1027
Published Online: September 20, 2013
... study examined the biomechanical properties of healing rat skin wounds in vivo and ex vivo. Thirty male Sprague-Dawley rats, each with a 6 mm full-thickness circular punch biopsied wound at both posterior hind limbs were used. The mechanical stiffness at both the central and margins of the wound...
Journal Articles
Article Type: Research-Article
J Biomech Eng. October 2013, 135(10): 101007.
Paper No: BIO-12-1575
Published Online: September 20, 2013
... on the predictions of deformation and stiffness, and more realistic representations of the anisotropy can be advantageous. In contrast, for models of the entire vertebral body, and in the absence of specimen-specific data on the anisotropic mechanical behavior of the peripheral trabecular bone and shell, material...
Journal Articles
Article Type: Technical Briefs
J Biomech Eng. September 2012, 134(9): 094502.
Published Online: August 27, 2012
... bending from 50 N to 300 N at 1 Hz for 25 cycles. All femurs were tested in both anteroposterior (AP) and mediolateral (ML) bending planes. Bending stiffness (i.e., slope of the force-vs-displacement curve) and linearity R 2 (i.e., coefficient of determination) of each loading cycle were measured...
Journal Articles
Article Type: Technical Briefs
J Biomech Eng. September 2010, 132(9): 094502.
Published Online: August 26, 2010
... portion of the third cycle was used to measure the stiffness. Indentation tests were performed on two polyurethane foams and polymethyl-methacrylate for validation ( n = 15 ) . Regression analysis was used to compare the moduli with reference values. Subchondral bone moduli of tibial plateaus from Sprague...
Journal Articles
Article Type: Research Papers
J Biomech Eng. August 2009, 131(8): 081008.
Published Online: July 6, 2009
... spinal segments (Occiput-C2, C4-C5, and C6-C7) for measurement of tensile structural response and failure testing. The upper cervical spine (Occiput-C2) was found to be significantly less stiff, absorb less strain energy, and fail at higher loads than the lower cervical spine (C4-C5 and C6-C7...
Journal Articles
Article Type: Research Papers
J Biomech Eng. February 2009, 131(2): 021014.
Published Online: December 18, 2008
... and the force acting on the needles. This relationship allows the force on the microneedle to be determined from a known field gradient. This together with a measurement of the displacement of the needle in a given gel allows one to determine the stiffness ( F ∕ δ ) of the gel and the elastic modulus, provided...
Journal Articles
Article Type: Research Papers
J Biomech Eng. April 2008, 130(2): 021011.
Published Online: March 31, 2008
... of mixtures for fiber composites to evaluate the dependence of age-related changes in tendon tensile strength ( σ ) and stiffness ( E ) on the collagen fibril cross-sectional area fraction ( ρ ) , which is related to the fibril volume fraction. Tail tendons from C57BL6 mice from age groups 1.6 – 35.3 months...
Journal Articles
Article Type: Research Papers
J Biomech Eng. April 2008, 130(2): 021013.
Published Online: March 31, 2008
... MRI brain stiffness Characterization of tissue material properties is important in a number of ways to medical clinicians and researchers. Changes in material stiffness can indicate the presence of tumors and other diseases ( 1 ). In the case of deep venous thrombosis (DVT), hardness...
Journal Articles
Article Type: Research Papers
J Biomech Eng. February 2008, 130(1): 011011.
Published Online: February 11, 2008
... 11 02 2008 biomechanics bone compressive strength orthopaedics tensile strength yield stress Young's modulus human cortical bone strain rate effects ductile-brittle transition stiffness strength In a failure scenario, bone will often have been exposed to high strain...
Journal Articles
Article Type: Technical Papers
J Biomech Eng. February 2007, 129(1): 97–104.
Published Online: June 26, 2006
...% confidence. Although the porcine donors were of similar age, there were individual variations in the stiffness of the anterior lens capsule. Figure 3b shows associated results for material parameters c 1 and c 2 as a ratio. Recall that c 1 reflects the stiffness of the material...
Journal Articles
Article Type: Technical Papers
J Biomech Eng. June 2001, 123(3): 234–238.
Published Online: December 13, 2000
...J. A. Simo˜es; J. Monteiro; M. A. Vaz The aim of this paper is to describe a new numerical–experimental method to determine the stiffness of a conceptual proximal femoral prototype. The methodology consists of the comparison of the numerical and experimental displacement distributions...