Knee trauma stitches after the general 3 days can gradually begin to bend. After closing the local wound of knee skin trauma, the symptoms of swelling and pain can be significantly relieved in about 3 days. After the swelling of the knee joint is reduced, appropriate knee bending activities can be carried out, paying attention to gentle movements, the amplitude of small to large, to avoid too much movement leading to tearing of the suture, as long as the bending angle is well controlled, it will not cause any adverse effect in general. In the process of practicing knee bending, the patient can gradually increase the bending angle according to the condition of edema and whether there are any discomfort symptoms, in order to promote knee flexion and extension activities, and gradually return to the normal state. However, since the wound has not fully healed, strenuous activities are not recommended to avoid wound dehiscence and suture breakage. Generally, it takes about 14 days for the skin stitches in the knee joint to heal and the stitches to be removed.