The response of joints to impact loading — II In vivo behavior of subchondral bone
- 31 May 1972
- journal article
- Published by Elsevier BV in Journal of Biomechanics
- Vol. 5 (3), 267-272
- https://doi.org/10.1016/0021-9290(72)90042-5
Abstract
The knee joints of live guinea pigs, subjected to repeated longitudinal impaction, developed obvious cartilage degeneration over a 3 week period. In vitro tests had previously shown that articular cartilage is particularly susceptible to injury from impact loading and that subchondral bone acts as a cushion to protect the overlying cartilage from damage during such loading. Associated with, and slightly preceding the earliest cartilage changes, as judged histochemically, was a stiffening of the underlying subchondral bone. The bone stiffness measurements returned to within the normal range as the cartilage degeneration progressed.Keywords
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