Three-dimensional finite element analysis with different internal fixation methods through the anterior approach

Table 3 Displacement of each point on the fracture line, in mm

Node	Combined steel plate		Internal iliac plate		Row nail blocking		Triangular steel plate		Spring steel plate
	Sitting	Standing	Sitting	Standing	Sitting	Standing	Sitting	Standing	Sitting	Standing
1	0.097	0.089	0.085	0.099	0.087	0．103	0.093	0.107	0.102	0.141
2	0.910	0.103	0.481	0.086	0.956	0.097	0.914	0.105	1.104	0.127
3	0.938	0.112	0.458	0.102	0.683	0.124	0.832	0.120	1.017	0.136
4	0.104	0.093	0.484	0.128	1.109	0.115	0.753	0.098	0.936	0.128
5	0.887	0.121	0.401	0.157	0.990	0.131	0.914	0.144	1.125	0.205
6	0.682	0.117	0.377	0.128	0.887	0.135	0.756	0.126	0.913	0.146
7	0.652	0.129	0.473	0.172	0.633	0.153	0.671	0.167	0.801	0.182
8	0.556	0.194	0.503	0.172	0.545	0.201	0.539	0.187	0.714	0.214
9	0.520	0.198	0.588	0.171	0.511	0.198	0.597	0.178	0.618	0.201
10	0.690	0.239	0.590	0.241	0.538	0.244	0.702	0.237	0.843	0.257
Mean	0.604	0.140	0.444	0.146	0.694	0.150	0.677	0.147	0.817	0.171
SD	0.286	0.049	0.136	0.044	0.286	0.046	0.227	0.042	0.283	0.042
Minimum value	0.097	0.089	0.085	0.086	0.087	0.097	0.093	0.098	0.102	0.127
Maximum value	0.938	0.240	0.590	0.241	1.109	0.244	0.914	0.237	1.125	0.257

In the sitting position, there was a statistical difference in the means among groups (P = 0.004). The pairwise comparisons indicated that the average displacement of the internal iliac plate group was significantly smaller than that of the spring plate group (P = 0.002). There were no other significant pairwise differences (all P > 0.05). In the standing position, there were no significant differences in the means among groups (P = 0.299). SD: Standard deviation.