Medial collateral ligament avulsion - femur

Case contributed by Maulik S Patel
Diagnosis almost certain


Knee trauma. Pain, swelling medial aspect of knee.

There is linear avulsed bone flake from medial condyle of femur. The site corresponds to proximal insertion of medial collateral ligament. There is supra-patellar soft tissue swelling suggesting possibility of joint effusion. There is no avulsion fracture from intercondylar region of tibia. There is no lytic or sclerotic bony lesion.

Case Discussion

Patient with trauma presented with pain, swelling on medial aspect of knee. Plain radiograph shows avulsion fracture from medial femoral condyle where proximal end of medial collateral ligament is attached. There is a corresponding bony defect in adjacent femur.

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