Mucoid degeneration of anterior cruciate ligament

Case contributed by Utkarsh Kabra
Diagnosis almost certain

Presentation

Pain, difficulty in bending knee, no history of trauma.

Patient Data

Age: 30 years
Gender: Male

Diffusely thickened anterior cruciate ligament appearing hyperintense on PD fat sat images.

Subtle altered signal in suprapatellar fat pad which can possibly be related to suprapatellar fat pad impingement.

Case Discussion

Diffusely thickened anterior cruciate ligament appearing hyperintense on PD fat sat images consistent with mucoid degeneration. Differential diagnosis with such finding would be low-grade sprain of the anterior cruciate ligament. However, there was no associated history of trauma.

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