Presentation
Recent knee injury, unknown mechanism. Complaining of pain and locking knee.
Patient Data
Age: 30
Gender: Male
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_pin":false},"extraPropsURL":"/studies/46606/annotated_viewer_json?lang=us"}
- bucket handle tear of the medial meniscus with the displaced fragment paralleling the posterior cruciate ligament (PCL) at the parasagittal cuts (double PCL sign)
- moderate knee effusion
- baker's cyst
Case Discussion
This case demonstrates the double PCL sign due to bucket-handle tear, which usually involve the medial meniscus. This appears on sagittal MRI images of the knee when the displaced torn fragment of the meniscus comes to lie anteroinferior to the posterior cruciate ligament (PCL) mimicking a second smaller PCL.