There are sequelae after a tendon rupture. There are three main aspects: the first is that adhesions will appear at the location of the tendon injury, which is mainly due to the rupture of blood vessels and bleeding after the injury, forming inflammatory edema locally, which will lead to adhesions in the surrounding tissues during the process of absorption; and after the tendon rupture, even if anastomosis is performed, the tendon is in a fully relaxed state during the process of plaster fixation, and the surrounding tissues will adhere to it, which will also tend to form adhesions. adhesions may also be formed easily. Second, pain occurs because some blood circulation is disrupted after the injury. When it rains and gets cold on a cloudy day, the local blood circulation decreases further, resulting in the accumulation of inflammatory metabolites in the local aseptic inflammatory lesions, which will stimulate the peripheral nerves and make it easy to feel pain, but this pain is mainly vague and not very painful. The third one is that the tendon feels shorter than before, because after the tendon injury, before the anastomosis is performed, some uneven areas of the severed end have to be cut properly to help the tendon suture; and after the suture, the scar connection will appear, which will also lead to the tendon being slightly shorter than the previous length, and the tendon will feel contracted.