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✅ Knee MRI Mastery/Chap 2.ACL and PCL

(Fig 2-B.17) Meyers and McKeever classification system type IV

by MSK MRI 2024. 2. 23.

https://youtu.be/ydXMr6N0e98

https://youtu.be/8yHOp_whDZU

✅ Meyers and McKeever system (with modifications by Zaricznyj)

 

Type 1: Minimally/Nondisplaced Fragment

Type 2: Anterior Elevation Of The Fragment

Type 3: Complete Separation Of The Fragment

Type 3a: Involves A Small Portion Of Eminence

Type 3b: Involves The Majority Of The Eminence

Type 4: Comminuted Avulsion Or Rotation Of The Fracture Fragment

 


1. Lateral Meniscus and ACL Attachments: 

The study highlights a significant overlap (approximately 40%) between the anterior root of the lateral meniscus and the ACL's tibial attachment, observed under an electron microscope. 

Notably, avulsed fracture fragments adhered to the anterior horn of the lateral meniscus. 

 

2. CT Scans versus FSPD in Bone Fragment Visibility: 

CT scans are superior in visualizing bone fragments compared to FSPD, mainly due to the clarity provided by bone marrow edema, surrounding fluid, and hemorrhage.

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

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