Calcific Deposition Within the Lateral Collateral Ligament of the Knee Presenting as Chronic Lateral Knee Pain: A Case Report.

JBJS Case ConnectNov 5, 2026 (epub)
Case ReportOrthopedic SurgeryRadiology (Diagnostic)

Ayman Youssef Eltabbaa, Mohamed Khaled Etrby, Ahmed Maher Hawila et al.

✦ AI-curated · Sources linked

Case in brief

A 50-year-old woman had progressive lateral knee pain for 5 years without preceding trauma. Examination showed focal tenderness over the lateral femoral epicondyle. Radiographs identified a calcific density adjacent to the lateral collateral ligament, while MRI showed a hypointense lesion within the ligament, supporting calcific ligamentitis. After conservative treatment failed, the deposit was surgically excised while preserving ligament integrity. Her symptoms resolved completely, with resolution maintained at 18 months.

What made this case unusual

The calcific deposit was located within the lateral collateral ligament and presented as chronic lateral knee pain, an uncommon cause of this symptom.

Diagnostic / clinical pearl

In chronic focal lateral knee pain, a calcific density near the lateral collateral ligament and an intraligamentous hypointense MRI lesion can indicate calcific ligamentitis.

Source

PubMed · PMID 42987228

Published in JBJS Case Connect. This summary was written by xxcode from the publication's abstract and metadata. It is not peer reviewed and is not a substitute for the original article. For clinical decisions, review the original publication.

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