Swelling and pain in the back of the foot can not walk on the ground to consider tendovaginitis, gout, fasciitis, skin infections, rheumatoid arthritis, fractures and other causes. 1. Tenosynovitis: tendonitis of the extensor muscle on the back of the foot, localized swelling and pain, and restricted movement. 2. Gout: because of purine purine metabolism abnormalities caused by the back of the foot swelling and pain, mostly acute pain, localized redness and swelling, laboratory tests of uric acid can be a clear diagnosis. 3. Fasciitis: due to trauma or chronic strain injury, aseptic inflammation occurs with localized swelling and pain. 4. Skin infection: because bacteria and other microorganisms invade the soft tissues of the dorsum of the foot to cause swelling and pain in the dorsum of the foot, accompanied by localized redness, swelling and pain, elevated skin temperature, and in severe cases, pus will break out. 5. Osteoarthritis: due to the joint degeneration and joint hyperplasia, the joint space becomes narrower, resulting in limited joint movement, and the dorsum of the foot is swollen and painful and can not walk on the ground. Diagnosis can be made through radiographs. 6. Fracture: If you suffer from trauma and localized swelling and pain, consider the possibility of fracture, and need to take pictures to further clarify. It is best to go to the hospital to check the swelling and pain in the back of the foot can not walk, and under the guidance of the doctor for standardized treatment.