Question: In your opinion, when do you fix medial meniscal root tears? When do you leave them alone?
Tears to the medial meniscal root change the biomechanics and kinematics of the knee, which cause early degeneration of the joint. It has been shown the peak tibiofemoral contact pressure after a total meniscectomy is equal to a posterior medial meniscal root tear.
Recent kinematic/biomechanical studies have also shown the importance of the medial meniscus to anterior translation of the knee. Absence of the medial meniscus (entire medial meniscal root tear) places large stresses on the ACL, the primary ligament that prevents anterior translation of the knee.
Full Article: Medial meniscal root tears: Fix it or leave it alone