Lateral collateral ligament calcification - knee

Case contributed by Maulik S Patel
Diagnosis certain

Presentation

Acute onset of left knee lateral side pain for the last few days. No trauma/ fever.

Patient Data

Age: 55 years
Gender: Female
PA one leg
standing view
Intercondylar
view
Lateral
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Info

There are a few soft tissue calcification foci in the location of the lateral collateral ligament. There is a mild reduction of the medial femorotibial compartment. There is no fracture/ dislocation/ bone lesion. There is no joint effusion.

This study is a stack
Long and short
axis images
Longitudinal
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Info

The lateral collateral ligament is intact. There are a few calcification foci (7 - 10 mm) in the cranial half of the ligament. The biceps femoris, popliteus tendon, iliotibial band, quadriceps tendon, and patellar tendon are normal. There is no effusion in the suprapatellar recess. There is no parameniscal cyst.

Case Discussion

The case shows lateral collateral ligament calcification which is an uncommon cause of lateral knee pain.

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