Mechanical and Physical Properties of the Human Intervertebral Joint.
Abstract
Human intervertebral joints were subjected to a constant stress, and the resultant strain response was measured as a function of time. Thereafter, the stress was partially removed and the strain again measured as a function of time. Based upon the data, an analytical/mechanical model was formulated for which the Young's Moduli and a coefficient of viscosity were determined. The measured data indicate marked differences in the compressive behavior of the intervertebral joint from the thoracic and lumbar column. Several types of disk degeneration were observed and studied. It is suggested that the disk acts as a sealed pressurized unit. If tears or ruptures occur in the joint whereby nuclear fluid can easily escape from the intervertebral disk and be in direct contact with the vertebral centrum the mechanical properties of the joint are significantly altered. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1979
- Accession Number
- ADA075107
Entities
People
- Ints Kaleps
- Leon E. Kazarian