If the operation is performed under arthroscopy, you can walk on the ground in the acute stage (the third day) after discoid meniscus plasty. Even if it is an incision, the stitches will be removed in two weeks at the latest, and you can walk on the ground. So at present, as long as your incision is healed and your stitches are removed, you can walk on the ground and sit down without any problem. Of course, early exercise is more conducive to the recovery of joint function and avoid knee joint stiffness. Get well soon!