STRESS ANALYSIS OF THREE-DIMENSIONAL FINITE ELEMENT MODEL OF CALCANEUS WITH COMPRESSION OF POSTERIOR FACET AFTER FACTURE AND TALUS DURING GAIT
- VernacularTitle:骨折后后关节面压缩的跟骨与距骨在步态过程应力分布的三维有限元研究
- Author:
Lifeng LIU
;
Jinfang CAI
;
Jin LIANG
;
- Publication Type:Journal Article
- Keywords:
finite element;
calcaneus;
talus;
fracture;
stress analysis
- From:
Medical Journal of Chinese People's Liberation Army
2001;0(11):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the stress distribution of calcaneus and talus with posterior facet after compression fracture during gait by finite element method. Methods A wedge was resected to simulate the malunion calcaneus with compression fracture of posterior facet. The Bo?hler’s angle was reduced from 35? to 10?. The calcaneus and talus malunion were used to simulate for three phases of the stance during the gait (heel strike, midstance, push off). A finite element solver to calculate. The results were compared with normal condition. Results The stress distribution within the bone in condition of malunion was obtained, and sites of enhanced stresses for three phases were located. The results were significantly different from that of normal condition. Conclusion The results revealed the importance of reconstruction of calcaneal structure and helped us understand the cause of sequela of calcaneal fractures
