膝关节骨关节病的准确诊断，需要有一套能确切反映膝关节真实病变情况的Ｘ线片。传统的非负重状态下摄片不能提供资料，而站立位摄片能正确地显示膝关节各个间室的病变状况，从而为治疗提供准确的信息。文章介绍了一种实用的站立位髌骨轴心位摄片的方法，并论述其临床意义。 Accurate diagnosis of knee joint and joint disease, the need to have a true reflection of the actual conditions of the knee X-ray film. The traditional non-weight-bearing state of the film can not provide information, and standing radiography can correctly display the knee joint lesions in various compartments, so as to provide accurate information for treatment. The article introduces a practical method of standing patellar axial photography, and discusses its clinical significance.