[Progress on diagnosis and treatment for chronic ankle instability].

Chronic ankle instability is a common disease which is caused by missed diagnosis or inappropriate treatment of acute ankle sprain. It could lead to long-term pain, traumatic arthritis and malfunctions. While the consistent standard for its diagnosis and treatment has not yet formed. There are a lot of inspection items, such as X-ray, MRI, B ultrasoud. For the treatment of CAI, surgery is the primary method for treatment of chronic ankle instability, but clinicians may be confused with variety operation ways, which were reported with different clinical efficacy. In recent years, the non-anatomical repair has been turn to anatomy reconstruction in the surgical treatment of CAI.