Biomechanical study of positions of femoral head-and-neck nail in fixation of proximal femoral fracture
- VernacularTitle:股骨近端骨折内固定头颈钉不同位置置放的生物力学研究
- Author:
Lei LIU
;
Jianwei ZHOU
;
Yijin WANG
- Publication Type:Journal Article
- Keywords:
intertrochanteric fracture;
2 types of internal fixation;
best fixation position;
biomechanics
- From:
Orthopedic Journal of China
2006;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]To analyze the biomechanics of different positions of femoral head-and-neck nail in fixation of proximal femoral fracture.[Method]Stable and unstable fracture models were made from 24 fresh femur specimens,and fixed with r-nail and DHS.Head-and-neck nails were placed in different positions to test their mechanical properties of anti-compression,anti-bending,anti-shearing and anti-torsion,and compared with each other.[Result]Mechanical properties of the femoral strength,stiffness,stability and loading capacity were tested and compared.To the stable fracture group,head-and-neck nail should be placed in middle-lower and posterior 1/3 of femoral neck,which leads to the best loading capacity.To the unstable fracture group,it should be placed between femoral head and neck,which lead to strong obliquity mechanics and valuable for bone union.[Conclusion]Confirm of the best position of femoral head-and-neck nail could improve the effect of fixation and enhance the surgical treatment of proximal femoral fracture.
