Effects of wing-like memory alloy intrasegmental fixator on healing of lumbar spondylolysis in dogs
- VernacularTitle:翼状记忆合金节段内固定器对犬腰椎峡部裂愈合的影响
- Author:
Wende XIAO
;
Chusong ZHOU
;
Anmin JIN
- Publication Type:Journal Article
- Keywords:
lumbar spondylolysis;
internal fixator;
memory alloy;
dog
- From:
Orthopedic Journal of China
2006;0(17):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]To investigate the influence of wing-like memory alloy intrasegmental fixator(WMAIF)on healing of lumbar spondylolysis.[Method]Eighteen healthy hybrid adult dogs were used in the experiment,regardless of gender,the L_6 isthmic portion were injured by operation randomly and equally divided into three groups.Group Ⅰ were fixed with WMAIF,groupⅡ were fixed with steel wire,group Ⅲ were treated with nothing.Every group was examined through CT at 2,4,6,8 and 10 weeks.[Result]In group Ⅰ,the fracture achieved healing at 6 weeks after operation.In group Ⅱ,the fracture achieved healing at 10 weeks after operation,while no repair of fracture was found in group Ⅲ.[Conclusion]Lumber spondylolysis fixation with WMAIF has stable and continued axial stress,WMAIF is beneficial to fracture healing,and is a new and reliable intrasegmental instrument for direct repair of lumbar spondylolysis.
