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Am J Sports Med. 2004 Oct-Nov;32(7):1675-80.

The effect of posterior cruciate ligament injury and reconstruction on meniscal strain.

Author information

1
Department of Orthopaedic Surgery, Orthopaedic Surgery Biomechanics Laboratory, University of South Alabama Medical Center, Mobile, Alabama 36617, USA. apearsal@usouthal.edu <apearsal@usouthal.edu>

Abstract

BACKGROUND:

The relationship between posterior cruciate ligament insufficiency and meniscal injury is unclear.

HYPOTHESIS:

Posterior cruciate ligament insufficiency results in increased medial and lateral meniscal strain.

STUDY DESIGN:

Descriptive anatomic study.

METHODS:

Eight cadaveric specimens were evaluated with a 6-axis load cell and differential variable reluctance transducer strain gauges placed in both menisci. Data were recorded in the posterior cruciate ligament-intact state after posterior cruciate ligament transection and after posterior cruciate ligament reconstruction.

RESULTS:

The effect of posterior cruciate ligament state on meniscal strain was more pronounced at higher flexion angles. At 60 degrees and 90 degrees of flexion, there was a significant effect of posterior cruciate ligament sectioning and reconstruction on meniscal strain (P < .026). Average meniscal strain for both medial and lateral menisci increased between the intact and the posterior cruciate ligament-cut states. Posterior cruciate ligament reconstruction decreased strain values to that of the intact knee.

CONCLUSIONS:

Meniscal strain increases with complete posterior cruciate ligament injury and is returned to posterior cruciate ligament-intact levels after posterior cruciate ligament reconstruction.

CLINICAL RELEVANCE:

Posterior cruciate ligament reconstruction may play an important role in reducing meniscal strain and subsequent degeneration within the posterior cruciate ligament-injured knee.

PMID:
15494332
DOI:
10.1177/0363546504265937
[Indexed for MEDLINE]
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