The causes of swelling of the outer ankle are synovitis, ligament injury, fracture, venous thrombosis of the lower extremity, gout and other causes.
1. synovitis: due to trauma or bone degeneration secondary to synovial hyperplasia and hypertrophy secretion of fluid appear localized swelling.
2. Ligament injury: for example, localized swelling and pain after breaking the foot, we should consider the possibility of ligament injury and need to check the MRI for a clear diagnosis.
3. Fracture: if there is a history of trauma, localized pain is obvious, can not walk, need to take X-ray to rule out the possibility of fracture.
4. Lower extremity venous thrombosis: swelling of the ankle and calf is obvious, which can be clearly diagnosed by lower extremity vascular ultrasound.
5. Gout: If the local swelling, skin redness and swelling, consider the possibility of gout, laboratory tests of uric acid to clarify the diagnosis.
Ankle swelling does not go away need to go to the hospital for further examination, if bilateral swelling may also have heart disease, kidney disease and other reasons, the patient needs to follow the doctor’s instructions targeted treatment.