A biomechanical comparison of cable tension band fixation for tibial avulsion fractures of the anterior cruciate ligament
10.3760/cma.j.issn.1671-7600.2018.04.012
- VernacularTitle:前交叉韧带胫骨棘止点撕脱骨折中钛缆张力带固定的生物力学比较研究
- Author:
Jianchun LIN
1
;
Zhongguo LIU
;
Qingzhi CHEN
;
Heguo CAI
Author Information
1. 361100,厦门市第三医院骨科
- Keywords:
Anterior cruciate ligament;
Tibial fracture;
Fracture fixation,internal;
Biomechanical study
- From:
Chinese Journal of Orthopaedic Trauma
2018;20(4):341-345
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare cable tension band fixation with other 3 fixations in terms of biomechanical stability for tibial avulsion fractures of the anterior cruciate ligament (ACL).Methods Eighty fresh porcine knees were randomized into 4 equal groups (n =20).For each knee,all the soft tissues were removed only to keep the femur-ACL-tibia complex.The knee complexes were used to create fracture models of standard Meyers-Mc Keever type Ⅲ at the ACL attachment region using a swing saw.The fracture fragments in the 4 groups were subjected to fixation respectively with intramedullary lag screws,high-strength suture,tension band wire and cable tension band.All the specimens were subsequently tested on a Material Testing Machine at a load rate of 60 mm/mm.The 4 groups were compared in terms of ultimate failure load,yield load,and fragmental displacement under single-cycle loading and multi-cyclic loadings.Results Cable tension band fixation displayed significantly higher ultimate failure,higher yield load and lower fragmental displacement than all the other 3 fixations (P ＜ 0.05).Conclusion As cable tension band fixation,which is convenient and economical,provides better biomechanical stability than other 3 fixations for tibial avulsion fractures of the ACL,it may allow earlier functional and weight-bearing exercise after operation.
