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.
|An avulsion of the menisco-tibial ligament results in an incompetent 'floating' meniscus.|
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.