Accession Number : ADA194720

Title :   Hierarchical Structure in Polymeric Solids and Its Influence on Properties.

Descriptive Note : Final rept. 1 Oct 84-31 Dec 87,

Corporate Author : CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MACROMOLECULAR SCIENCE

Personal Author(s) : Baer, Eric

PDF Url : ADA194720

Report Date : 15 Apr 1988

Pagination or Media Count : 7

Abstract : The intervertebral disc is a biological composite whose hierarchical structure is designed to function in a wide range of physiological loading modes. The intervertebral disc is located in the spinal column between the bony vertebral bodies. Their function is to absorb shock and to permit motion between spinal segments. The disc is composed of two parts: a gelatinous nucleus pulposis containing a network of collagen type II fibers, hydrophillic protoglycan molecules, and up to 88% water and the concentric lamellar walls of the annulus fibrosis which is made up primarily of large fibers of collagen type I. The disc is anchored to the vertebral bodies above and below it by cartilage endplates. Optical microscope techniques are used to characterize the hierarchical structure of the collagenous components of the intervertebral disc. These findings are employed in explaining the mechanical response of the disc in compression.

Descriptors :   *COLLAGEN, *DISKS, *SPINAL COLUMN, *MORPHOLOGY(BIOLOGY), *BIODYNAMICS, BONES, CARTILAGE, FIBERS, FIBROSIS, HIERARCHIES, METHODOLOGY, MICROSCOPES, MOLECULES, PHYSIOLOGY, POLYMERS, RESPONSE(BIOLOGY), SOLIDS, VERTEBRATES, WALLS, STRESS(PHYSIOLOGY), LIQUID CRYSTALS, POLYMERS

Subject Categories : Anatomy and Physiology
      Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE