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

University of South Alabama, Mobile, Alabama, United States
The American Journal of Sports Medicine (Impact Factor: 4.7). 10/2004; 32(7):1675-80. DOI: 10.1177/0363546504265937
Source: PubMed

ABSTRACT The relationship between posterior cruciate ligament insufficiency and meniscal injury is unclear.
Posterior cruciate ligament insufficiency results in increased medial and lateral meniscal strain.
Descriptive anatomic study.
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.
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.
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.

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