Medial discoid meniscus

Case contributed by Bahman Rasuli
Diagnosis certain

Presentation

Knee pain.

Patient Data

Age: 45 years
Gender: Male
mri
This study is a stack
Axial PD
fat sat
This study is a stack
Coronal PD
fat sat
This study is a stack
Coronal
T1
This study is a stack
Sagittal
T1
This study is a stack
Sagittal
PD fat sat
This study is a stack
Sagittal
T2
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Info

Mild joint effusion.

Incomplete discoid medial meniscus with alteration of the signal due to intrameniscal mucoid degeneration.

The lateral meniscus seems discoid, with no abnormal signal identified to suggest the presence of a tear within.

Patella chondromalacia as cartilage thinning and fraying associated with subchondral cystic changes at the mid to medial facet joints of the patella.

Prepatellar bursitis and subcutaneous edematous changes along with mid to anterior aspect of the knee joint

Case Discussion

Discoid menisci are those that have a body that is too wide. Usually, the lateral meniscus is affected, discoid medial menisci are rare.

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