Biomechanical evaluation of transverse acetabular fracture fixation
- VernacularTitle:髋臼横形骨折内固定稳定性的生物力学评估
- Author:
Aiqing LU
;
Junying SUN
;
Tianhua DONG
;
Tiansi TANG
- Publication Type:Journal Article
- Keywords:
Transverse acetabular fracture;
Internal fixation;
Biomecha nics
- From:
Chinese Journal of Orthopaedic Trauma
2002;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To conduct a biomechanical evaluation of the four internal fixation methods to treat transverse acetabular fracture and find the b est one. Methods The transverse acetabular fracture models were created by osteo tomy in 12 pairs of embalmed cadaveric hip joints, and fixed with one of the fou r different methods: an anterior column plate (P/N), an anterior column plate w ith a posterior column screw (P+S), a posterior column plate with an anterior screw (S+P) and two posterior column plates (N/P?2). The biomechanical stabi lity was evaluated on longitudinal displacement, level displacement and stiffnes s measurements for fixed fracture fragments which were under 800 Newton vertical compression load. Results The longitudinal displacement in S+P was 3.99mm, in P+S 4.09mm, in N/P?2 5.07mm and in P/N 5.66mm; the level displacement in S+P was 0.015mm, in P+S 0.016mm, in N/P?2 0.022mm and in P/N 0.025mm; the average stiffness in S+P was 205.77N/mm, in P+S 207.52N/mm, in N/P?2 162.36N/mm and i n P/N 146.67N/mm. There were significant differences between the groups of S+P and P+S and the groups of N/P?2 and P/N (P
