Biomechanical study on unilateral single-plane external fixer.
Six tibias removed from 30-40 years old males, who died in an accident for in less than 12 hours, were osteotomized at one-third supra-medium segment. They were fixed by an unilateral adjustable external fixer (UAEF), to be used as a model of external fixation of tibial fracture (MEFTF). The compression, tension, torsion, antero-posterior and lateral bending strength, and the strength for vertically extracting the pins from the tibia were determined in the MEFTF. Within a certain range of load, the correlation of strain to stress was basically a linear relationship. These data provide a theoretical basis of biomechanics for the improvement of UAEF and for early exercises of fracture patients, such as extend-bending of the joint, raising the limb and walking with a walking stick.
Liu
G
G
Department of Orthopedics, Tongji Medical University, Wuhan.
Du
J
J
Xu
Z
Z
D000328:Adult; D001696:Biomechanical Phenomena; D016267:External Fixators; D006801:Humans; D008297:Male; D013977:Tibia / Q000503:physiopathology*; D013978:Tibial Fractures / Q000503:physiopathology*