After a ligament rupture, the area will experience pain, swelling, and restricted movement, and it will not be possible to actively extend or bend. Taking the rupture of the finger extensor tendon as an example, after the rupture caused by accidental bumps or other reasons, the site exhibits pain and cannot be straightened. When passively straightened, it will flex on its own after removing the support, unable to actively extend. These are the symptoms of functional limitation after a ligament rupture. Furthermore, some patients may also experience persistent local pain and significant swelling. At this time, it is advisable to combine local hot compresses and physical therapy. For distal finger extensor tendon ruptures, hyperextension fixation can be applied. About four weeks later, if the hyperextension fixation splint or plaster is removed, some patients can heal on their own. However, if some patients cannot heal naturally, surgical anastomosis treatment is required.