钽棒植入治疗成人早期股骨头坏死

目的：探讨一种简单有效治疗成人早期股骨头缺血性坏死的新方法,以避免股骨头进一步塌陷和坏死,改善临床症状。方法：自2009年1月至2010年6月采用钽棒植入治疗9例（10髋）成人早期股骨头坏死,男7例,女2例;年龄29～63岁,平均44.1岁。术前均摄髋关节正侧位X线片,行CT和MRI扫描。按Steinberg分期：Ⅰ期1例1髋,Ⅱa期4例5髋,Ⅱb期4例4髋。手术在C形臂X线机定位下进行,从股骨大转子下钻入导针到股骨头坏死区中心,空心钻沿导针扩髓,刮除坏死区死骨,必要时植骨,选择合适长度的钽棒拧入,支撑坏死区关节面。术后3、6、9个月随访,采用JOA评分标准评价临床疗效,摄髋关节正侧位X线片,观察股骨头变化。结果：手术时间40～60min,平均50min;出血量60～100ml,平均80ml。术后无感染、骨折及下肢深静脉血栓形成等并发症,全部病例获得随访,时间9个月及以上,定期行X线检查未发现股骨头塌陷和坏死加重。JOA评分从术前平均（31.30±19.63）分增加至术后3个月平均（54.10±13.20）分,术后6个月（69.90±15.04）分,术后9个月（87.00±8.83）分。结论：钽棒植入治疗成人早期股骨头坏死手术简单易行,能有效避免坏死区股骨头塌陷,近期疗效满意。

Treatment of adult early femur head necrosis with the tantalum screw

Objective:To investigate a new method for the treatment adult early femur head necrosis in order to avoid further collapse and necrosis and improve the clinical symptoms.Methods:From January 2009 to June 2010,10 hips of 9 patients,including 7 males and 2 females,aged from 29 to 63 years old(averaged 44.1),with femur head necrosis were treated with implantation of the tantalum screw.The X-ray film,CT scan and MRI were performed before operation.According to Steinberg staging,stage I was in 1 case (1 hip),sta...