【摘要】 实验设计制作了一种股骨头表面置换假体,于2002-01/2005-12在安阳市人民医院骨科进行了28例股骨头表面置换。置换前CT测得健侧股骨头直径,按测得值和±1mm来选取假体。置换采用完全的肌肉间隙入路,以股骨头圆韧带窝顶点为标记,根据自行测量的股骨头中心点与圆韧带窝顶点的关系来确定股骨头中心点。置换中再次测量股骨头直径,使假体和髋臼达到精密匹配。置换后24-48个月复查X射线片显示假体无松动,位置良好,与髋臼完全匹配,关节间隙无明显改变。功能评价根据Harris评分法,置换前平均得分63分,置换后评分91.5分。优23例,良3例,可2例,优良率92.86%。证实股骨头表面置换为比较年轻的ARCOⅢ期股骨头缺血性坏死的患者提供了一种比较好的治疗方法。更多还原

【Abstract】 Prosthesis for femoral head surface replacement was designed.Between January 2002 and December 2005,28 patients underwent femoral head surface replacement in Anyang People’s Hospital.The diameter of the normal femoral head was determined by CT,and the prosthesis was selected according to the measured value ± l mm.With the muscle gap approach,the center of the femoral head was determined according to the measured distance between the femoral head center and the culminated point of the round ligament fossa based on the mark of the culminated point of the round ligament pit.Additionally,the diameter of the femoral head was measured again to ensure the precise match of the prosthesis and acetabulum.X-ray films at 24-48 months show no loosening or dislocation of the prosthesis,which was well matched with acetabulum.Furthermore,the joint space did not remarkably change.The mean score was 63 before operation and 91.5 after operation respectively according to Harris sore.The successful rate is 92.86%(excellent in 23 cases,good in 3,and improved in 2).The results show that femoral head surface replacement is an effective method for young patients with avascular necrosis of the femoral head at the stage of ARCO Ⅲ.更多还原