✅ Knee MRI Mastery/Chap 2.ACL and PCL

(Fig 2-E.12) Two Patterns Of The PCL Tears

MSK MRI 2024. 3. 16. 22:43

https://youtu.be/-v6nxEn84CY

https://youtu.be/UgiSgNcqguA

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1️⃣ MRI Signs of PCL Tear:

  • Focal disruption of the PCL.
  • Amorphous increased signal intensity with disruption of one or both margins of the ligament.
  • Increased signal intensity on proton density images is more common than on T2-weighted images.
  • Nonvisualization of the PCL.
  • Abnormal thickening of the PCL distal to the genu with an anteroposterior diameter of greater than 7 mm. (Magn Reson Imaging Clin N Am. 2014 Nov;22(4):557-80.)

 

2️⃣ PCL Injury Patterns:

  • Injury to the PCL may result in transverse or longitudinal interstitial tears. (Radiology. 2016 Oct;281(1):23-40)

✅ Interstitial Tears: The anteroposterior diameter of the ligament distal to the genu is greater than 7 mm on a sagittal T2-weighted sequence.

✅ Transverse Tears: Focal disruption of the PCL.

 

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