Document Detail

A study of the cracking sounds from the metacarpophalangeal joint.
MedLine Citation:
PMID:  2619836     Owner:  NLM     Status:  MEDLINE    
The familiar cracking sounds produced by distraction of the metacarpophalangeal joints were studied using accelerometers and a computerized signal analysis system. The joints were distracted in a controlled manner using a motorized device which simultaneously monitored the load on the joint and its extension. The load and extension parameters and those from the signal analysis were used to examine diurnal variation, the effects of multiple distractions, distraction speed, hand temperature and loading between distractions, and to show that in many cases, the energy contained in a crack signal, expressed as a ratio of the articular cartilage volume, exceeded a known level needed to produce articular cartilage damage.
P Watson; W G Kernohan; R A Mollan
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine     Volume:  203     ISSN:  0954-4119     ISO Abbreviation:  Proc Inst Mech Eng H     Publication Date:  1989  
Date Detail:
Created Date:  1990-03-21     Completed Date:  1990-03-21     Revised Date:  2009-06-08    
Medline Journal Info:
Nlm Unique ID:  8908934     Medline TA:  Proc Inst Mech Eng H     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  109-18     Citation Subset:  IM    
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MeSH Terms
Equipment Design
Metacarpophalangeal Joint / physiology*
Pilot Projects
Signal Processing, Computer-Assisted

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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