Document Detail


Popliteomeniscal fasciculi and lateral meniscal stability.
MedLine Citation:
PMID:  9397276     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In an attempt to understand better the contribution of the anteroinferior and posterosuperior popliteomeniscal fasciculi to lateral meniscus stability, we objectively evaluated the stability of the lateral meniscus before and after sequentially sectioning these fasciculi. In the biomechanical model, we attempted to account for the inherent limitations of arthroscopic evaluation of lateral meniscal stability. When the fasciculi were intact, the average lateral meniscal motion with a 10-N load was 3.6 mm. When the anteroinferior fascicle was disrupted, the average lateral meniscal motion with a 10-N load was 5.4 mm. The mean increase in motion from the intact state was 1.8 mm or 50%, which was significant. When both fasciculi were disrupted, the average lateral meniscal motion with 10-N load was 6.4 mm. The mean increase in motion from the intact state was 2.8 mm or 78% and from the single fascicle disruption state was 1.0 mm or 18%, both differences were significant. The meniscus did not become locked with any of these loading trials, and it spontaneously reduced to the original position when unloaded. Both fasciculi make significant contributions to meniscal stability. Even though the meniscus never became locked in the joint when loaded during this study, with the variable loads seen with normal activities mechanical symptoms might be expected when meniscal motion is almost double. An increase in lateral meniscal motion at the time of surgery may aid in the diagnosis of fasciculi disruption, despite normal meniscal structure on magnetic resonance images and at arthroscopic visualization.
Authors:
P T Simonian; P S Sussmann; M van Trommel; T L Wickiewicz; R F Warren
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The American journal of sports medicine     Volume:  25     ISSN:  0363-5465     ISO Abbreviation:  Am J Sports Med     Publication Date:    1997 Nov-Dec
Date Detail:
Created Date:  1998-01-22     Completed Date:  1998-01-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7609541     Medline TA:  Am J Sports Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  849-53     Citation Subset:  IM    
Affiliation:
Sports Medicine Service, Hospital for Special Surgery, New York, New York, USA.
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MeSH Terms
Descriptor/Qualifier:
Aged
Aged, 80 and over
Analysis of Variance
Arthroscopy / methods*
Biomechanics
Cadaver
Humans
Joint Instability / diagnosis*
Knee Joint / pathology,  surgery*
Menisci, Tibial*
Middle Aged
Tendons*

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


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