Sprain symptoms include the following: 1, the most common is the joint or muscle pain, because after the sprain often local soft tissue edema, inflammation, exudation, resulting in pain. 2, there may be local swelling, because after the sprain local exudation, the volume will increase, swelling. 3, may be sprained parts of the joint relaxation instability, such as the knee sprain or ankle sprain, joint ligament damage, or even rupture, resulting in abnormal joint movement, joint instability and other symptoms. 4.After the sprain, some sequelae may remain, such as joint instability, joint degeneration, cartilage damage, and even joint dislocation caused by local ligament tear.