The effects of different plate fixation methods in the zygomaticomaxillary complex: A finite element analysis

2020 ◽  
Vol 32 (2) ◽  
pp. 93-100
Author(s):  
Hamid Reza Fallahi ◽  
Seied Omid Keyhan ◽  
Iman Forooghi ◽  
Donya Sadat Mahoutchi ◽  
Mohammad Reza Abdollahi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Plate Fixation ◽  
Element Analysis ◽  
Fixation Methods ◽  
Zygomaticomaxillary Complex

scholarly journals Finite element analysis of double‐plate fixation using reversed locking compression‐distal femoral plates for Vancouver B1 periprosthetic femoral fractures

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Daisuke Takahashi ◽  
Yoshihiro Noyama ◽  
Tsuyoshi Asano ◽  
Tomohiro Shimizu ◽  
Tohru Irie ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Plate Fixation ◽  
Weight Bearing ◽  
Femoral Fractures ◽  
Full Weight Bearing ◽  
Loading Test ◽  
Lateral Plate ◽  
Element Analysis ◽  
Periprosthetic Femoral Fractures

Abstract Background Internal fixation is recommended for treating Vancouver B1 periprosthetic femoral fractures. Although several fixation procedures have been developed with high fixation stability and union rates, long-term weight-bearing constructs are still lacking. Therefore, the aim of the present study was to evaluate the stability of a double-plate procedure using reversed contralateral locking compression-distal femoral plates for fixation of Vancouver B1 periprosthetic femoral fractures under full weight-bearing. Methods Single- and double-plate fixation procedures for locking compression-distal femoral plates were analysed under an axial load of 1,500 N by finite element analysis and biomechanical loading tests. A vertical loading test was performed to the prosthetic head, and the displacements and strains were calculated based on load-displacement and load-strain curves generated by the static compression tests. Results The finite element analysis revealed that double-plate fixation significantly reduced stress concentration at the lateral plate place on the fracture site. Under full weight-bearing, the maximum von Mises stress in the lateral plate was 268 MPa. On the other hand, the maximum stress in the single-plating method occurred at the defect level of the femur with a maximum stress value of 1,303 MPa. The principal strains of single- and double-plate fixation were 0.63 % and 0.058 %, respectively. Consistently, in the axial loading test, the strain values at a 1,500 N loading of the single- and double-plate fixation methods were 1,274.60 ± 11.53 and 317.33 ± 8.03 (× 10− 6), respectively. Conclusions The present study suggests that dual-plate fixation with reversed locking compression-distal femoral plates may be an excellent treatment procedure for patients with Vancouver B1 fractures, allowing for full weight-bearing in the early postoperative period.

B216 Finite Element Analysis of Pelvic Fracture with Plate Fixation

2013 ◽  
Vol 2013.24 (0) ◽  
pp. 135-136
Author(s):  
Aiko NOGUCHI ◽  
Keiko KATHUYAMA ◽  
Keisuke SASAGAWA ◽  
Masafumi ODA ◽  
Naofumi SIOTA ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Pelvic Fracture ◽  
Plate Fixation ◽  
Element Analysis

scholarly journals Understanding the causes behind coracoid graft osteolysıs in latarjet procedure (finite element analysis and comparison of three fixation methods)

2020 ◽  
Vol 106 (1) ◽  
pp. 53-59
Author(s):  
Nazmi Bülent Alp ◽  
Oğuz Doğan ◽  
Tufan Gürkan Yılmaz ◽  
Onur Can Kalay ◽  
Abdellah Ait Moussa ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Latarjet Procedure ◽  
Element Analysis ◽  
Fixation Methods

scholarly journals Finite Element Analysis of Different Double-Plate Angles in the Treatment of the Femoral Shaft Nonunion with No Cortical Support opposite the Primary Lateral Plate

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Hao Zhang ◽  
Jiantao Li ◽  
Jianfeng Zhou ◽  
Lianting Li ◽  
Ming Hao ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Plate Fixation ◽  
Femoral Shaft ◽  
Von Mises Stress ◽  
Lateral Plate ◽  
Element Analysis ◽  
Single Plate ◽  
Von Mises ◽  
Primary Lateral

Objectives. We evaluated the biomechanical outcome of different plate fixation strategies (the single plate construct, 45° double-plate construct, 90° double-plate construct, 135° double-plate construct, and 180° double-plate construct) used for the fixation of the femoral shaft nonunion with no cortical support opposite the primary lateral plate. This may help surgeons choose the optimal therapy to the femoral shaft nonunion. Methods. The femoral shaft nonunion with no medial support and the models of lateral plate and medial plate was constructed in 3-matic software and UG-NX software, respectively. We then assembled the single plate and different double plates to the fracture model separately to form the fixation models. After meshing the models’ elements, we used the ABAQUS software to perform the finite element analysis. Values of the von Mises Stress (VMS) distribution of the implant, peak VMS, and model displacement and deformation were used to capture the mechanical factors in this study. Results. Our results indicated that the peak von Mises Stress (VMS) of the lateral plate was concentrated in middle surface of the lateral plate near the fragment of each group. The peak VMS was 5201.0 MPa (the single-plate construct), 3490.0 MPa (45° double-plate construct), 1754.0 MPa (90° double-plate construct), 1123.0 MPa (135° double-plate construct), and 816.5 MPa (180° double-plate construct). The additional short plate dispersed some stress leading to the decrease in the peak VMS of the lateral plate. As angle formed by the double plates increased, the dispersed function of the additional plate was becoming obvious. The bending angles of the lateral plate were 18° versus 12° versus 3° versus 2° versus 1° (the single-plate construct versus 45° double-plate construct versus 90° double-plate construct versus 135° double-plate construct versus 180° double-plate construct). Conclusions. Our study indicated that increasing the angle between the plates in a double-plate construct improves the stability of the construct over a single lateral plate when there is no cortical support opposite to the lateral plate. The strongest fixation occurred when the angle between the two plates was greater than ninety degrees.

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