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Medial collateral ligament of the knee

Dr Mostafa El-Feky and Dr Shu Su et al.

The medial (tibial) collateral ligament (MCL) of the knee is a flat, triangular band on its medial aspect that resists valgus forces. It has superficial and deep portions.

Gross anatomy

The MCL proximal attachment is the medial femoral epicondyle anteroinferior to the adductor tubercle which is:

  • superior to the superficial medial collateral ligament attachment
  • anterior to the medial gastrocnemius tendon attachment

Distally it has two insertion sites at the upper medial surface of the tibia:

The deep portion is attached to the medial meniscus 1

Related pathology

Anatomy: Lower limb

Anatomy: Lower limb

Article information

rID: 31366
Section: Anatomy
Synonyms or Alternate Spellings:
  • Medial femoral collateral ligament
  • MCL
  • Tibial collateral ligament

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Cases and figures

  • Figure 1: knee ligaments (Gray's illustrations)
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  • Figure 2: knee ligaments (Gray's illustrations)
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  • Case 1: complete MCL tear
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  • Case 2: grade 2 MCL injury
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