(Fig 3-B.02) Posterolateral Capsular Support Structures

https://youtu.be/2-8svU3ZuTo

https://youtu.be/6WOItzqJj1g

 

📌 Overview of Posterolateral Knee Structures

✅ Fibular Head Attachments

• Important anchor for posterolateral corner structures
• Attachment for lateral collateral ligament (LCL) and biceps femoris tendon anteriorly and posteriorly

 

✅ Biceps Femoris

• Long head tendon merges with LCL 1cm above fibular head
• Inserts as conjoined tendon on lateral fibular head

 

✅ Lateral Collateral Ligament

• Inserts anteriorly on fibular head
• Overlies popliteus tendon at popliteus sulcus
• Insertion anterior and lateral to fabellofibular and arcuate ligaments

 

✅ Popliteus Complex

• Consists of popliteus tendon, muscle, and patellofemoral ligament
• Tendon attaches to lateral femoral condyle fossa

 

✅ Popliteofibular Ligament

• Extends from popliteus tendon to posteromedial fibular styloid

 

✅ Arcuate Ligament

• Reinforces posterolateral capsule
• Y-shaped, running to fibular styloid apex
• Lateral limb attaches to lateral femoral condyle
• Medial limb attaches to posterior capsule

 

✅ Fabellofibular Ligament

• Descends from fabella parallel to LCL
• Attaches to posterior/medial aspect of fibular styloid

 

✅ Iliotibial Band

• Superficial layer inserts on Gerdy's tubercle of tibia
• Deep layer attaches superficial part to lateral femur

 

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#KneeAnatomy, #PosterolateralCorner, #FibulaAttachments, #LateralCollateralLigament, #BicepsFemoris, #PopliteusComplex, #ArcuateLigament, #FabellofibularLigament, #PopliteofibularLigament, #IliotibialBand