首页> 外国专利> SKELETAL STRETCHING METHOD FOR TREATING THE CASES OF LONG BONE FRACTURES IN LOWER EXTREMITIES

SKELETAL STRETCHING METHOD FOR TREATING THE CASES OF LONG BONE FRACTURES IN LOWER EXTREMITIES

机译:下肢长骨骨折病例的骨骼拉伸方法

摘要

FIELD: medicine. SUBSTANCE: method involves introducing wire with thrusting platform in the frontal plane in the top-down direction at an acute angle to longitudinal axis of the distal extremity fragment. The wire is strained in clamp. Traction force is applied by applying load acting in the proximal fragment long axis direction until anatomical state of the injured extremity fragment is achieved. Medial angular displacement of the proximal fractured femur fragment is eliminated to an angle between mechanical axis of the extremity and straight line connecting proximal articulation rotation center and the middle point of bone width in the position of the bone wound in some particular cases. Medial angular displacement of distal fractured femur fragment is eliminated to an angle between mechanical axis of the extremity and long axis of the bone in another particular case. Lateral angular displacement of both fractured femur fragments are eliminated by reducing traction force at the moment of bone deformity elimination in one more particular case. Angular displacement of tibia splitters in frontal plane is removed by changing traction force direction in moving aside the point of tension rope attachment to the clamp in the direction opposite to distal bone wound fragment displacement direction by a value that is calculated from a formula m = 2bsin(ϕ/2), where b is the distance from this point to bone wound, ϕ - is the angular displacement of the distal fragment. Angular displacement of the femur tibia splitters in sagittal plane is removed by aligning traction force direction with biomechanical extremity axis in another particular case. Angular displacement of long bone is eliminated by moving traction system unit by a value calculated from formula e = atgϕ, where a is the distance from bone wound to the unit and ϕ - is the distal fragment displacement. EFFECT: enhanced effectiveness of treatment; high accuracy of reposition. 8 dwg
机译:领域:医学。实质:该方法包括将带有推力平台的金属丝以自顶向下的方向相对于远端肢体碎片的纵轴成锐角的方式引入前平面。电线在夹钳中拉紧。通过施加作用在近端碎片长轴方向上的载荷来施加牵引力,直到达到受伤的肢体碎片的解剖状态为止。在某些特定情况下,将股骨近端骨折的内侧角位移消除到四肢的机械轴和连接近端关节运动旋转中心的直线与骨伤口位置的骨宽度中点之间的角度。在另一种特殊情况下,股骨远端骨折的内侧角位移被消除到四肢的机械轴和骨骼的长轴之间的角度。在一种更特殊的情况下,通过减少在消除骨畸形时的牵引力,可以消除两个骨折股骨片段的侧向角位移。通过沿与远端骨创面碎片移位方向相反的方向移动固定在夹具上的拉力绳固定点的位置,改变牵引力方向,从而改变牵引力方向,从而消除胫骨分离器在前平面中的角位移,该值由公式m = 2bsin计算得出(&/ 2),其中b是从该点到骨头伤口的距离,& -是远端片段的角位移。在另一种特殊情况下,通过将牵引力方向与生物力学四肢轴线对齐,可以去除股骨胫骨分离器在矢状面上的角位移。通过将牵引系统单位移动一个由公式e = atg displacementphi计算出的值,可以消除长骨的角位移,其中a是从骨头到单位的距离,& -是远端碎片移位。效果:治疗效果增强;重新定位精度高。 8载重吨

著录项

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号