[Recent advances in X-ray observation index of hallux valgus and their applications]

X-ray measurement is one of the most important methods for diagnosing hallux valgus. To choose the right photographed way and the proper X-ray observation index has important significance on accurate diagnosis and correct treatment. As the in-depth research on the pathogenesis and pathological changes of hallux valgus,more new X-ray measuring methods and index have appeared. X-ray in the weight-bearing and non-weight-bearing position, dorsoplantar radiograph, lateral radio-graph, oblique radiograph and sesamoid radiograph can be taken. Many observation index can be chosen,including angles, distances,the position of sesamoid et al,can be used to evaluate deformity degree before surgery and curative effect after surgery. The following is a summary of the international and domestic recent researches about X-ray observation index of hallux valgus and their applications.