Results after 47 patients came imto our institutio , al cases were examined carefully , funally they were divied into several groups , including 13 cases of sacroiliac joint malposition , 10 cases of ankylosing spondylitis , 6cases of metastasis of malignant tumor , 18 cases of sacrocoxitis 结果47例患者入院后经仔细检查，分别确诊为骶髂关节错位13例，强直性脊柱炎10例，恶性肿瘤骶髂关节转移6例，骶髂关节炎18例。
Before the operative field in the region of the lower lumbar spine , sacroiliac joints , or buttocks is prepared , the gluteal cleft is sponged with alcohol , and sterile dry gauze is inserted about the anus so that iodine or other solutions are prevented from running down to this region , causing dermatitis 下腰椎区、骶髂关节或臀部等术野消毒前，先用酒精消毒臀沟，并用无菌干纱布填塞肛门周围，以防止碘酊或其他消毒液流人该区而导致皮炎或烧伤。
