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Knee MRI Mastery/Chap 3.Collateral Ligaments

(Fig 3-B.01) Three-Layer Approach to Lateral Knee

https://youtu.be/o27uL_qEKq8

https://youtu.be/6WOItzqJj1g

 

📌 The Posterolateral Corner of the Knee: Three-Layer Approach

 

1️⃣ Superficial Layer (First Layer)

  • Lateral fascia
  • Iliotibial band
  • Biceps femoris tendon

 

2️⃣ Middle Layer (Second Layer)

  • Patellar retinaculum
  • Patellofemoral ligament
  • Patellomeniscal ligament

 

3️⃣ Deep Layer (Third Layer)

  • Lateral collateral ligament (fibular collateral ligament)
  • Lateral coronary ligament (lateral meniscotibial ligament)
  • Arcuate ligament
  • Popliteus tendon-muscle unit
  • Popliteofibular ligament
  • Fabellofibular ligament
  • Lateral joint capsule with attachment to lateral meniscus edge

 

Note: The deep layer is the most anatomically variable and constitutes the posterolateral corner.

★ 1. Superficial Lamina - Travels superficial to lateral collateral ligament - Ends posteriorly at fabellofibular ligament 

★ 2. Deep Lamina - Travels deep to lateral collateral ligament - Attaches to lateral meniscus edge, forming coronary ligament - Reaches arcuate ligament

 

 Radiol Clin N Am 51 (2013) 413–432

 

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