E-ISSN: 1305-3612
    Association between tears of the posterior root of the medial meniscus and far posterior femoral condyle osteoarthritis
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    Musculoskeletal Imaging - Original Article
    VOLUME: 26 ISSUE: 4
    P: 349-354
    July 2020

    Association between tears of the posterior root of the medial meniscus and far posterior femoral condyle osteoarthritis

    Diagn Interv Radiol 2020;26(4):349-354
    DOI: 10.5152/dir.2019.19358
    Ronnie Sebro
    S. Sharon Ashok
    Matthew Uriell
    1. Department of Radiology, Pennsylvania University School of Medicine, Philadelphia, USA
    2. Department of Orthopedic Surgery, Pennsylvania University School of Medicine, Philadelphia, USA
    3. Department of Genetics , Pennsylvania University School of Medicine, Philadelphia, USA
    4. Department of Epidemiology and Biostatistics, Pennsylvania University School of Medicine, Philadelphia, USA
    No information available.
    No information available
    Received Date: 04.07.2019
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    ABSTRACT

    PURPOSE

    We aimed to evaluate whether tears of the posterior horn of the medial meniscus root ligament (PHMM RL) are associated with osteoarthritis of the far posterior femoral condyles (FPFC).

    METHODS

    Retrospective review of 1158 patients who underwent arthroscopy identified 49 patients with confirmed tears of the medial meniscus posterior root ligament attachment. Preoperative magnetic resonance imaging (MRI) studies were reviewed to identify advanced osteoarthritis involving the medial and lateral FPFC. Control patients (n=48) had no meniscal tears confirmed by arthroscopy. Cases and controls were age- and sex-matched exactly 1:1. One case patient was excluded since there was no age- and sex-matched control available. The International Cartilage Research Society (ICRS) MRI cartilage grade was recorded for the medial and lateral FPFC. Associations were evaluated using univariate and multivariable conditional logistic regression analyses.

    RESULTS

    There were 48 case and 48 control patients (10 men in each group, 20.8%) with median age 53 years (range, 21–67). Medial FPFC ICRS Grade 2 or higher lesions were present in 34 (70.8%) of case patients and 16 (33.3%) of control patients. Lateral FPFC ICRS Grade 2 or higher lesions were present in 24 (50%) of case patients and 14 (28.2%) of control patients. Increased body mass index (BMI) was associated with PHMM RL tears (OR=1.11, 95% CI [1.01, 1.22], P = 0.020). MRI was 81.2% (39/48) sensitive and 91.2% (44/48) specific for detection of PHMM RL tears. PHMM RL tears were associated with Grade 2 or higher medial FPFC osteoarthritis (OR=10.00, 95% CI (2.34, 42.78), P < 0.001). This association remained after adjusting for BMI (OR=11.79, 95% CI [2.46, 56.53], P = 0.002). There was also an association between PHMM RL tears and lateral FPFC osteoarthritis, which persisted after adjusting for BMI (OR =3.00, 95% CI [1.07, 8.37], P = 0.036).

    CONCLUSION

    PHMM RL tears are associated with advanced osteoarthritis of the FPFC. Radiologists identifying FPFC osteoarthritis should look carefully for PHMM RL tears.

    References

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