Document Detail

Fluid compartmentation and articular mechanoreceptor discharge in the cat knee joint.
MedLine Citation:
PMID:  4034915     Owner:  NLM     Status:  MEDLINE    
Experiments were performed to determine the effect of alteration of intra-articular pressure in different areas of the cat knee joint on the discharge of slowly adapting mechanoreceptors in the posterior region of the joint. At physiological (subatmospheric) pressures the anterior and posterior regions of the knee joint are not hydraulically continuous. However, at supra-atmospheric pressures between 2.5 and 9 cmH2O there is free communication between these areas. The discharge of receptors in the posterior region of the joint is influenced by intra-articular pressure changes in the posterior region when these are supra-atmospheric. However, pressure changes in the anterior region of the joint have little effect on the discharge of these receptors until free communication occurs between anterior and posterior regions. It is suggested that articular mechanoreceptors detect tension changes in collagen fibrils rather than volume changes of the joint capsule.
L Wood; W R Ferrell
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Quarterly journal of experimental physiology (Cambridge, England)     Volume:  70     ISSN:  0144-8757     ISO Abbreviation:  Q J Exp Physiol     Publication Date:  1985 Jul 
Date Detail:
Created Date:  1985-10-21     Completed Date:  1985-10-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8206873     Medline TA:  Q J Exp Physiol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  329-35     Citation Subset:  IM; S    
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MeSH Terms
Action Potentials
Hydrostatic Pressure
Knee Joint / anatomy & histology,  innervation,  physiology*
Mechanoreceptors / physiology*
Synovial Fluid / physiology*

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