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Mechanical symptoms and meniscal tear: a reappraisal
C G McHugh1, E G Matzkin2, J N Katz3
1Department of Orthopedic Surgery, Boston, MA, USA.
Objective:
To identify and summarize literature related to the association between mechanical symptoms (catching and locking of the knee), the presence of meniscal tear, and outcomes after arthroscopic surgery.
Design:
We searched PubMed and hand-searched reference lists for relevant articles and selected 38 for analysis.
Results:
Mechanical symptoms appear to have modest sensitivity (ranging 0.32-0.69), specificity (ranging 0.45-0.74) and positive predictive value (ranging 0.75-0.81) for meniscal tear. There is also very little evidence to suggest that those with mechanical symptoms experience better outcomes after arthroscopic surgery.
Conclusion:
Our examination of the literature does not support the hypothesis that mechanical symptoms are related to the presence of meniscal tear or portend better outcomes after arthroscopic surgery.
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