(Fig 3-A.20) Superficial and Deep MCL Anatomy

https://youtu.be/At9hFmbgYD4

https://youtu.be/GSIg93UH3Oc

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📌Deep Medial Collateral Ligament

 

• The deep medial collateral ligament (dMCL) is an essential independent stabilizer of the knee joint, adhering to the articular capsule.
• Rupture of the dMCL can clinically mimic a meniscal tear, highlighting the importance of recognizing and properly evaluating this structure during knee examinations and imaging studies.

✅Anatomy Orientation and Attachments

• Recent findings have revealed that the dMCL has a distinctive fan-shaped orientation, extending antero-distally towards a 22 mm wide tibial attachment located approximately 8 mm distal to the joint line.
• The dMCL is a thickening of the medial joint capsule. 
• It has a broad, firm attachment to the midbody of the medial meniscus, situated between the meniscofemoral attachment of the posterior oblique ligament (POL) and the anteromedial capsule.

✅ Meniscofemoral ligament:

• Inserts at the meniscus' upper medial border
• Attaches to the medial femur just below the insertion of the superficial MCL (sMCL)
• May not be visible on MRI due to its proximity to the sMCL or femur

✅ Meniscotibial ligament:

• Inserts at the meniscus' lower medial border
• Has a short course to its attachment at the medial corner of the tibia, immediately below the joint line

 

Knee Surgery, Sports Traumatology, Arthroscopy (2020) 28:3709–3719 

Orthop Rev (Pavia). 2021 Jun 4;13(2):24463

The American Journal of Sports Medicine 2019;47(2):372–378

Semin Musculoskelet Radiol. 2016 Feb;20(1):12-25

 

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#MCL, #Medialknee, #POL, #OPL, #kneeanatomy, #anatomyknee #POL, 

In summary, the dMCL is a crucial independent stabilizer of the knee joint, with distinct attachments to the tibial plateau, medial meniscus, and associated meniscofemoral and meniscotibial ligaments. Its strategic location and connections underscore its significance in maintaining knee stability and proper function.