(Fig 2-D.11) ACL Graft tear and Stump entrapment

https://youtu.be/72PXx8fFH1Y

https://youtu.be/rbdodKV6lpE

1️⃣ Pseudo-Cyclops Lesion

✅ Definition and Characteristics

• Description: Occasionally, partially torn graft fibers are displaced into the intercondylar notch, mimicking a cyclops lesion. This phenomenon is known as a "pseudo-cyclops lesion."
• Distinguishing Features: Unlike a true cyclops lesion, a pseudo-cyclops lesion involves a portion of the fibers extending into the tibial or femoral tunnels

Skeletal Radiol 2015;44(8):1169–73

 

2️⃣ Types of Stump Entrapment (SE) Lesions

✅ Type 1 SE Lesion

• Resemblance: The type 1 SE lesion resembles a classic post-operative cyclops lesion.

✅ Type 2 SE Lesion

• Characteristics: Type 2 SE lesions are characterized by a tongue-like free end and angulation of the ACL stump.
• Appearance: Unlike the type 1 lesion, which has a mass-like appearance, the type 2 SE lesion shows the anterior portion of the torn ACL folded upon itself. This results in a thin, tongue-like free end extending anteriorly out of the intercondylar notch.

 

Skeletal Radiol. 2016 Sep;45(9):1269-76

 

"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"

© 2022 MSK MRI Jee Eun Lee All Rights Reserved.

#VisualizingMSK #ACLinjuries #KneeMRI #ACLtear #stumpentrapment #cylops 

You should not distribute or commercially exploit the content.

You should not transmit or store it on any other website or electronic retrieval system.