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Discoid Lateral Meniscus

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Knee Arthroscopy

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Abstract

The discoid lateral meniscus (DLM) is an infrequent anatomical variant, which usually affects the lateral compartment of the knee. Its estimated prevalence is low and higher rates have been observed in the Asian population. The identification of symptomatic DLM requires an appropriate level of clinical suspicion based upon the patient’s medical history and symptoms, the judicious use of imaging studies (including plain films and magnetic resonance imaging (MRI)), and diagnostic arthroscopy. It is the authors’ experience that a high frequency of bilaterality occurs with a high prevalence of peripheral tears that require repair. The MRI classification can aid surgeons in predicting the occurrence of peripheral tears and degree of instability as well as plan the treatment method preoperatively. Current treatment recommendations favor meniscal reshaping through partial meniscectomy with or without repair. However, arthroscopic reshaping can be challenging to an inexperienced surgeon because visualization within the lateral joint space may be limited by a thickened meniscus and the small size of the pediatric knee. It is believed that the described technical guide to arthroscopic partial meniscectomy in conjunction with the meniscal repair of the peripheral tear is an effective method.

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Author information

Authors and Affiliations

  1. Department of Orthopaedic Surgery, Saeum Hospital, 8, Siheung-Daero 139-Gil, Geumcheon-Gu, Seoul, Republic of Korea

    Jin Hwan Ahn

  2. Department of Orthopaedic Surgery, Kyung Hee University Hospital at Gangdong, 892 Dongnam-Ro, Gangdong-Gu, Seoul, Republic of Korea

    Sang Hak Lee

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  1. Jin Hwan Ahn
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Correspondence to Sang Hak Lee .

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Editors and Affiliations

  1. Department of Orthopedic, Hanyang University, Myong Ji Hospital, Gyeonggi-do, Korea (Republic of)

    Jin Goo Kim

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Ahn, J.H., Lee, S.H. (2021). Discoid Lateral Meniscus . In: Kim, J.G. (eds) Knee Arthroscopy. Springer, Singapore. https://doi.org/10.1007/978-981-15-8191-5_17

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  • DOI: https://doi.org/10.1007/978-981-15-8191-5_17

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