A meniscal avulsion is any condition that results in the meniscus no longer being firmly anchored to the tibia.


Meniscus incompetence after avulsion

This includes detachment of the outer rim of the meniscus from the top of the tibia bone, due to damage to the ligaments there (menisco-tibial ligaments). It may also include a pulling out of the root of the meniscus from the bone.

menisco-tibial avulsion or floating meniscus    
An avulsion of the menisco-tibial ligament results in an incompetent 'floating' meniscus.    
Meniscus avulsion
Floating knee meniscus

An explanation of what it means to have a 'floating' knee meniscus on MRI imaging.



Avulsion of both posterior meniscal roots associated with acute rupture of the anterior cruciate ligament Mariani PP, Iannella G, Cerullo G and Giacobbe M. J Orthop Traumatol. 2015 Sep; 16(3): 259–262.

Biomechanical Consequences of Lateral Meniscal Posterior Root Avulsions. Geeslin AG, Civitarese DM, Turnbull TL, Dornan G, Fuso F and LaPrade RF. Orthop J Sports Med. 2015 Jul; 3(7 suppl2): 2325967115S00111.

See also -

Meniscus Avulsion - ebook