Lateral meniscus

The lateral meniscus is grooved laterally for the tendon of the popliteus, which separates it from the fibular collateral ligament.

Its anterior end is attached in front of the intercondyloid eminence of the tibia, lateral to, and behind, the anterior cruciate ligament, with which it blends; the posterior end is attached behind the intercondyloid eminence of the tibia and in front of the posterior end of the medial meniscus.

The anterior attachment of the lateral meniscus is twisted on itself so that its free margin looks backward and upward, its anterior end resting on a sloping shelf of bone on the front of the lateral process of the intercondyloid eminence.

Close to its posterior attachment it sends off a strong fasciculus, the ligament of Wrisberg, which passes upward and medialward, to be inserted into the medial condyle of the femur, immediately behind the attachment of the posterior cruciate ligament.

The lateral meniscus gives off from its anterior convex margin a fasciculus which forms the transverse ligament.

The lateral meniscus is less likely to be injured or torn than the medial meniscus. Diagnosis of lateral meniscus tear is done with McMurray's test. If a tear is detected, treatment depends on the type and size of the tear. Small tears can be treated conservatively, with rest, ice, and pain medications until the pain is under control, then exercise may be started with gradually increasing intensity, to improve range of motion and decrease swelling. More severe tears of the lateral meniscus require surgical repair or removal, which can often be done arthroscopically. Swelling and stiffness of the knee can occur when you have a torn lateral meniscus.

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  Left knee joint from behind, showing interior ligaments.
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  Right knee-joint, from the front, showing interior ligaments.
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  Capsule of right knee-joint (distended). Lateral aspect.
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  Capsule of right knee-joint (distended). Posterior aspect.
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  Anterior view of knee.
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  Right knee in extension. Deep dissection. Posterior view.
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  Right knee in extension. Deep dissection. Posterior view.
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  Knee and tibiofibular joint.Deep dissection. Anterior view.
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  Knee and tibiofibular joint.Deep dissection. Anterior view.
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  Knee joint.Deep dissection. Anteromedial view.
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  Knee joint.Deep dissection. Anteromedial view.
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  Knee joint.Deep dissection. Anteromedial view.
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  Knee joint.Deep dissection. Anteromedial view.
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  Knee joint. Deep dissection. Anterior view
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  Knee joint. Deep dissection. Anterior view.
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  Knee joint. Deep dissection. Posterior view

• Discoid meniscus
• Meniscal cartilage replacement therapy

This article incorporates text in the public domain from page 343 of the 20th edition of Gray's Anatomy (1918)

• Anatomy figure: 17:07-09 at Human Anatomy Online, SUNY Downstate Medical Center
• "Anatomy diagram: 02240.009-2". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2012-07-22.
• lljoints at The Anatomy Lesson by Wesley Norman (Georgetown University) (antkneejointopenflexed)