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１资料与方法 股骨头无菌坏死患者３３例均经症状及体征检查，并进行Ｘ线和ＣＴ检查确诊。患者男性 ２２例，女性 １１例。 治疗方法首先采用上海产ＬＤＴ－ＣＤ３１型超短波机治疗，波长 ７． ３７ ｍ，频率４０．６８ ＭＨｚ，最大输出功率２５０ Ｗ，取适当电极于病灶区前后
1 Materials and Methods 33 cases of aseptic necrosis of femoral head patients were symptoms and signs, and X-ray and CT examination confirmed. There were 22 males and 11 females. The treatment method first used Shanghai LDT-CD31 type ultrashort wave machine treatment, wavelength 7. 37 m, the frequency of 40.68 MHz, the maximum output power of 250 W, take the appropriate electrode before and after the lesion area