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Updated: Jul 4, 2026

Destabilization of the Medial Meniscus and Cartilage Scratch Murine Model of Accelerated Osteoarthritis

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Published on: July 6, 2022

Discoid lateral meniscus in children.

Erin S Hart¹, Kunal P Kalra, Brian E Grottkau

¹Massachusetts General Hospital for Children, Department of Orthopaedic Surgery, Yawkey Center for Outpatient Care, Boston, MA, USA.

Orthopedic Nursing

|June 4, 2008

Summary

The discoid lateral meniscus is a common knee abnormality in children that can cause pain and mechanical symptoms. While asymptomatic cases require no surgery, tears are common and may necessitate arthroscopic repair.

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Area of Science:

Orthopedics
Pediatric Orthopedics
Sports Medicine

Background:

The discoid lateral meniscus is the most frequent meniscal anomaly in children, affecting 1%-3% of the pediatric population.
This condition alters knee biomechanics, increasing susceptibility to injury and potentially leading to symptoms like pain, popping, and locking.
Bilateral occurrence is noted in 10%-20% of affected children.

Observation:

While asymptomatic discoid menisci do not require intervention, symptomatic cases frequently present with pain and mechanical knee symptoms.
Tears of the discoid lateral meniscus are significantly more common than in normal menisci.
Recent advancements in arthroscopic techniques facilitate stabilization, sculpting, and repair of torn discoid menisci.

Findings:

The article reviews the classification, clinical presentation, and diagnostic imaging for pediatric discoid lateral meniscus.
It details current treatment strategies, emphasizing arthroscopic approaches for symptomatic and torn menisci.
The review highlights the increased risk of meniscal tears associated with this anatomical variant.

Implications:

Early diagnosis and appropriate management of symptomatic discoid lateral meniscus are crucial for preventing long-term knee dysfunction.
Improved arthroscopic techniques offer promising outcomes for surgical repair and stabilization in pediatric patients.
Understanding the biomechanical impact of this variant informs treatment decisions and prognosis for young athletes and active children.