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Osteoarthritis Cartilage. 2008 Feb;16(2):261-7. Epub 2007 Sep 7.

Meniscal damage associated with increased local subchondral bone mineral density: a Framingham study.

Author information

  • 1Tufts - New England Medical Center, Boston, MA 02111, USA. glo@tufts-nemc.org

Abstract

OBJECTIVE:

Because menisci and the medial vs lateral tibial plateau bone mineral density ratio (M:L BMD) are associated with loading within the knee, we postulated there to be an association between compartment-specific meniscal damage and M:L BMD. We hypothesized that knees with higher M:L BMD, consistent with increased medial subchondral BMD, would be associated with medial meniscal damage, and lower ratios with lateral meniscal damage.

METHODS:

We conducted a cross-sectional study evaluating participants in the Framingham Osteoarthritis Cohort having magnetic resonance images (MRIs), BMDs, and x-rays of the knee. Medial and lateral meniscal damage were defined on MRI. We performed a logistic regression with medial meniscal damage as the outcome testing M:L BMD groups as predictor variables. We adjusted for age and sex; we used generalized estimating equations (GEE) to adjust for correlation between knees. Identical analyses were performed evaluating lateral meniscal damage.

RESULTS:

When evaluating the relation of M:L BMD to medial meniscal damage, the odds ratios (ORs) of prevalent medial meniscal damage from lowest to highest quartile of M:L BMD were 1.0 (referent), 1.9, 2.4 and 8.9, P for trend <0.0001. When evaluating the relation of M:L BMD to lateral meniscal damage, the ORs of prevalent lateral meniscal damage from lowest to highest quartile of M:L BMD were 1.0 (referent), 0.3, 0.2, and 0.2, P for trend = 0.001.

CONCLUSIONS:

Meniscal damage is associated with higher regional tibial BMD in the same compartment. Our findings highlight the close relationship between meniscal integrity and regional tibial subchondral BMD.

PMID:
17825586
[PubMed - indexed for MEDLINE]
PMCID:
PMC2278381
Free PMC Article

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