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Lateral Collateral Ligament

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Description

  • Origin: 1.4 mm proximal, 3.1 mm posterior to the lateral epicondyle of the femur[1]
  • Insertion: 28.4 mm distal to the fibular styloid tip, attaches to 38% of the fibular head[2]
  • Course: LCL runs approximately 0.69 mm along the lateral portion of the knee
  • Width 4-5 mm
  • Thickness 2.6 mm

Actions

  • Primary
    • Primary resistor of varus stress in all degrees of knee flexion
    • Significant role in providing posterolateral stability to the knee, resisting medial translation of the tibia
    • Primary resistor of external tibial rotation of the knee in 0-30° degrees of knee flexion
  • Secondary
    • Plays a minor role in stabilizing anterior and posterior tibial translation when the cruciate ligaments are torn

Vascular Supply

  • Popliteal Artery
    • Branches of the superior and inferior lateral genicular arteries
  • Anterior tibial recurrent arteries

Innervation


Clinical Significance


See Also


References


  1. LaPrade RF, Ly TV, Wentorf FA, Engebretsen L. The posterolateral attachments of the knee: a qualitative and quantitative morphologic analysis of the fibular collateral ligament, popliteus tendon, popliteofibular ligament, and lateral gastrocnemius tendon. Am J Sports Med. 2003 Nov-Dec;31(6):854-60
  2. Moorman CT III, LaPrade RF: Anatomy and biomechanics of the posterolateral corner of the knee. J Knee Surg 2005;18(2):137-145.15915835
Created by:
John Kiel on 1 December 2020 16:17:20
Authors:
Last edited:
3 December 2020 07:49:06
Category: