✅ Knee MRI Mastery/Chap 1. Meniscus

(Fig 1-E.49) Isolated Tear of popliteomeniscal fascicles

MSK MRI 2024. 2. 7. 10:49

https://youtu.be/ZuomNM5vc-Q

https://youtu.be/nKQsItyKAtM

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🔵🇰🇷Tear of popliteomeniscal fascicles

  • When assessing a knee for a hypermobile lateral meniscus (LM), it's important for the radiologist to concentrate on the anteroinferior and posterosuperior popliteomeniscal fascicles (PMFs). 
  • This is because a total rupture or lack of these structures correlates with a significantly higher likelihood (with odds ratios of 12 and 6, respectively) of a hypermobile LM. 
  • Despite some controversy, there are surgeons who advocate for repairing all instances of symptomatic LM instability when an MRI and arthroscopy confirm a PMF tear.

Radiographics. 2023 Jul;43(7):e220208.

 

🔵🇰🇷Normal popliteomeniscal fascicle deficiencies

  • The normal absence of the anteroinferior popliteomeniscal fascicle allows the popliteus tendon to traverse from the lateral to the medial side through the hiatus. 
  • A slice further medially through the hiatus reveals this normal deficiency of the fascicle.

 

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