There are many causes of stiff and painful calves, such as calf muscle strain, calf muscle fiber rupture, and ossifying myositis. Common treatments include general treatment, surgery, medication and so on. 1. Calf muscle strain: when standing for a long time, excessive exercise, calf muscle fatigue and accumulation of large amounts of lactic acid and other metabolic products, causing muscle stiffness and pain. You can use foam shaft massage calf, stretching muscles, hot compress calf muscle pain parts, etc., can promote the decomposition of lactic acid, relieve calf stiffness and pain. 2. Calf muscle fiber rupture or muscle tear: after trauma to the calf, part of the muscle fiber rupture or even muscle tear, local tissue adhesion, contraction, resulting in local pain and stiffness symptoms. Mild lacerations can be treated conservatively with immobilization in a brace or cast, rest, elevation, and physical therapy. Severe lacerations, such as complete tears of the gastrocnemius muscle, require incision and repair. 3. Ossifying myositis: When the calf is traumatized, it may suffer from ossifying myositis, which is a symptom of fibrous tissue proliferation, accompanied by a large amount of new bone and cartilage production, leading to stiffness and pain in the calf. The use of bisphosphonates and non-steroidal anti-inflammatory drugs such as aspirin under the supervision of a doctor can stop or reduce hematoma formation and reduce the pain and stiffness of the calf. If ossification is detected at the site of the lesion, it can be surgically removed. In addition, stiffness and pain in the calf muscles can also be caused by varicose veins in the calf, inflammation, etc. It is recommended that patients with stiffness and pain in the calf be advised to seek medical advice. It is recommended that patients with stiff and painful calves go to the hospital to find out the cause of the problem and treat the cause under the guidance of a doctor.