Abstract

The long term goal of the proposed work would be to develop the most efficient means to reduce fracture risk in an osteoporotic femur given the ability to ad a specified amount of bone mass. As an initial study, we propose to investigate the problem using methods of engineering design optimization to examine several pertinent issues. A finite element (FE) model of the proximal femar will be used as the driving function in the optimization procedure. This model was developed from a quantitative CT scan of a 93 year old female from which detailed geometry and local cortical and cancellous bone density was determined. The model consists of 5,745 8-noded linear elastic 3-D elements with 31,293 nodes. Two candidate design objectives are 1) minimizing failure risk with a fixed limit on resources (amount of bone added) and 2) minimizing cost (added bone mass) with a fixed limit on failure risk. Two organizational methods will be investigated: the modified method of feasible directions and sequential quadratic programming.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
3P41RR006009-09S1
Application #
6295221
Study Section
Project Start
1998-09-30
Project End
1999-07-31
Budget Start
1997-10-01
Budget End
1998-09-30
Support Year
9
Fiscal Year
1998
Total Cost
Indirect Cost

  Institution

Name
Mellon Pitts Corporation (Mpc Corp)
Department
Type
DUNS #
City
Pittsburgh
State
PA
Country
United States
Zip Code
15213

  Publications

Simakov, Nikolay A; Kurnikova, Maria G (2018) Membrane Position Dependency of the pKa and Conductivity of the Protein Ion Channel. J Membr Biol 251:393-404
Yonkunas, Michael; Buddhadev, Maiti; Flores Canales, Jose C et al. (2017) Configurational Preference of the Glutamate Receptor Ligand Binding Domain Dimers. Biophys J 112:2291-2300
Hwang, Wonmuk; Lang, Matthew J; Karplus, Martin (2017) Kinesin motility is driven by subdomain dynamics. Elife 6:
Earley, Lauriel F; Powers, John M; Adachi, Kei et al. (2017) Adeno-associated Virus (AAV) Assembly-Activating Protein Is Not an Essential Requirement for Capsid Assembly of AAV Serotypes 4, 5, and 11. J Virol 91:
Subramanian, Sandeep; Chaparala, Srilakshmi; Avali, Viji et al. (2016) A pilot study on the prevalence of DNA palindromes in breast cancer genomes. BMC Med Genomics 9:73
Ramakrishnan, N; Tourdot, Richard W; Radhakrishnan, Ravi (2016) Thermodynamic free energy methods to investigate shape transitions in bilayer membranes. Int J Adv Eng Sci Appl Math 8:88-100
Zhang, Yimeng; Li, Xiong; Samonds, Jason M et al. (2016) Relating functional connectivity in V1 neural circuits and 3D natural scenes using Boltzmann machines. Vision Res 120:121-31
Lee, Wei-Chung Allen; Bonin, Vincent; Reed, Michael et al. (2016) Anatomy and function of an excitatory network in the visual cortex. Nature 532:370-4
Murty, Vishnu P; Calabro, Finnegan; Luna, Beatriz (2016) The role of experience in adolescent cognitive development: Integration of executive, memory, and mesolimbic systems. Neurosci Biobehav Rev 70:46-58
Ramakrishnan, N; Radhakrishnan, Ravi (2015) Phenomenology based multiscale models as tools to understand cell membrane and organelle morphologies. Adv Planar Lipid Bilayers Liposomes 22:129-175

Showing the most recent 10 out of 292 publications