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The discoid lateral-meniscus syndrome

S C Dickhaut, J C DeLee

    The Journal of Bone and Joint Surgery. American Volume
    |September 1, 1982
    PubMed
    Summary

    The complete type of discoid lateral meniscus is often asymptomatic, while the Wrisberg-ligament type causes knee pain and snapping. Differentiating these during arthroscopy is crucial for proper patient management.

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    Area of Science:

    • Orthopedics
    • Sports Medicine
    • Anatomy

    Background:

    • Discoid lateral meniscus is a congenital anomaly with varied classifications.
    • The complete type and Wrisberg-ligament type represent distinct morphological variations.

    Purpose of the Study:

    • To differentiate between the asymptomatic complete type and symptomatic Wrisberg-ligament type of discoid lateral meniscus.
    • To highlight the importance of accurate diagnosis during arthroscopy.

    Main Methods:

    • Retrospective review of twelve patients with complete type discoid lateral meniscus.
    • Review of six patients with Wrisberg-ligament type discoid lateral meniscus.
    • Arthroscopic evaluation and surgical intervention.

    Main Results:

    • Ten of twelve patients with complete type discoid lateral meniscus were asymptomatic.
    • All six patients with Wrisberg-ligament type discoid lateral meniscus were symptomatic with snapping knee syndrome.
    • Arthroscopic lateral meniscectomy was performed for symptomatic patients.

    Conclusions:

    • The complete type of discoid lateral meniscus can be an incidental asymptomatic finding.
    • The Wrisberg-ligament type is associated with abnormal mobility and symptomatic snapping knee.
    • Distinguishing between these types during arthroscopy is essential to avoid unnecessary treatment.

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