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Symptomatic ring-shaped lateral meniscus: magnetic resonance imaging and arthroscopy
O Ahmet Atay1, Ustün Aydingöz, M Nedim Doral
1Department of Orthopedics and Traumatology, Hacettepe University Medical Center, 06100 Ankara, Turkey. oaatay@yahoo.com
Summary
A rare ring-shaped lateral meniscus, often missed by MRI, can cause knee pain. This case highlights its association with a meniscal cyst and osteochondritis dissecans, emphasizing accurate diagnosis.
Area of Science:
- Orthopedics
- Radiology
- Anatomy
Background:
- The lateral meniscus, crucial for knee stability, can present with rare anatomical variations.
- Ring-shaped lateral meniscus is an exceptionally uncommon congenital abnormality.
Observation:
- This report details the second documented case of a symptomatic ring-shaped lateral meniscus.
- The condition was observed in conjunction with a meniscal cyst and osteochondritis dissecans of the medial femoral condyle.
Findings:
- Magnetic resonance imaging (MRI) can be a diagnostic challenge, potentially misinterpreting the condition as a displaced meniscal tear.
- MRI is essential for identifying associated intra-articular abnormalities.
Implications:
- Accurate diagnosis of ring-shaped lateral meniscus is vital for appropriate patient management.
- Understanding associated pathologies improves surgical planning and patient outcomes for complex knee injuries.