[Biomechanical research in treating unstable Pilon fracture with anatomic plate of distal tibia].
OBJECTIVE
To investigate the mechanical characteristics of new anatomic plate of distal tibia from view of biomechanics.


METHODS
Twelve fresh adult moist ankle specimens were randomly divided into four block groups (every group had 3 specimens), 3 tibial specimens as a normal control (normal group N), 9 specimens were resulted in unstable distal tibial Pilon fracture. Using steel plate fixation with a new anatomic distal tibial plate (group A), reconstruction plate (group B), clover plate (group C). Group B and group C as control group to test the remote axial compressive strength, remote axial stiffness, reversing biomechanical properties, contacted characteristics of the tibial astragaloid articular surface.


RESULTS
The remote axial compressive strength, remote axial stiffness, reversing biomechanical properties, contacted characteristics of tibial astragaloid articular surface the in distal tibial Pilon fracture instability of group A were near normal group N (P>0.05). Group A was best than group B and C (P<0.05).


CONCLUSIONS
The new anatomic plate of distal tibia was relatively strong, which can reach effective and stable fixation for unstable distal tibial Pilon fracture.
Cui
Yong
Y
Department of Orthopaedics, the 3rd People's Hospital of Cixi, Cixi 315324, Zhejiang, China.
Wang
Yi-jin
YJ
Hua
Quan-ke
QK
Cai
Shui-qi
SQ
Yan
Li-min
LM
Chen
Ke-jie
KJ
D001696:Biomechanical Phenomena; D001860:Bone Plates; D005593:Fracture Fixation, Internal; D006801:Humans; D066298:In Vitro Techniques; D013977:Tibia / Q000737:chemistry* / Q000293:injuries / Q000601:surgery; D013978:Tibial Fractures / Q000601:surgery*