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Chinese Experts Consensus and Practice Guideline on Discoid Lateral Meniscus
Shunjie Yang1, Shurong Zhang2, Ruixin Li3
1Department of Orthopaedics, Orthopaedic Research Institution, West China Hospital, Sichuan University, Chengdu, China.
Orthopaedic Surgery
|March 6, 2023
Summary
Discoid lateral meniscus (DLM) is a common congenital knee variant. Partial meniscectomy is recommended over total meniscectomy for better long-term outcomes in DLM patients.
Area of Science:
- Orthopedics
- Sports Medicine
- Knee Surgery
Background:
- Discoid lateral meniscus (DLM) is the most common congenital lateral meniscus variant.
- DLM is associated with degeneration, lesions, and knee osteoarthritis.
- Clinical practice guidelines for DLM are lacking.
Purpose of the Study:
- To develop expert consensus and practice guidelines for DLM.
- To provide guidance on DLM definition, epidemiology, etiology, classification, diagnosis, treatment, prognosis, and rehabilitation.
Main Methods:
- Developed and approved by the Chinese Society of Sports Medicine.
- Utilized the Delphi method to achieve expert consensus.
- 18 consensus statements were finalized after excluding 14 redundant statements.
Main Results:
- Consensus was reached on key aspects of DLM management.
- Restoring meniscus shape, width, thickness, and stability is crucial for knee function.
- Partial meniscectomy with or without repair is the preferred first-line treatment.
Conclusions:
- Partial meniscectomy offers better long-term clinical and radiological outcomes compared to total or subtotal meniscectomy for DLM.
- Preserving meniscal integrity is vital for long-term knee health.
- These guidelines aim to standardize DLM clinical practice.

