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Comparative analysis for five fixations of Pauwels-I by the biomechanical finite-element method.
- Source :
-
Journal of investigative surgery : the official journal of the Academy of Surgical Research [J Invest Surg] 2020 Jun; Vol. 33 (5), pp. 428-437. Date of Electronic Publication: 2018 Dec 05. - Publication Year :
- 2020
-
Abstract
- Background: Little is known about how biomechanics govern the five fixtures such as DHS, MLS, DHS + LS, LP, and HA are accepted as common therapeutic techniques. Aims and objectives: A series of numerical models for a femoral neck fracture of Pauwels-I will be constructed by innovative approach of finite element in order to determine the most optimized option in comparison with biomechanical performance. Method: Twenty sets of computer tomography scanned femora were imported onto Mimics to extract 3 D models; these specimens were transferred to Geomagic-Studio for a simulative osteotomy and kyrtograph; then, they underwent UG to fit simulative solid models; 5 sorts of fixture were then expressed by Pro-Engineer virtually. After processing with HyperMesh, all compartments (fracture model + internal implant) were assembled onto 5 systems: "Dynamic Hip Screw (DHS), Multiple Lag screw (MLS), DHS + LS, femoral Locking Plate (LP) and HemiArthroplasty (HA)." Eventually, numerical models of the finite-elemental analysis were exported to AnSys to determine the solution. Result: Four models of fixation and a simulation of HA for Pauwels-I were established, validated, and analyzed with the following findings: In term of displacement, these 5 fixtures ranged between 0.3801 and 0.7536 mm have no significant difference; in term of stress, the averages of peaks for integral assemblage are b(MLS) = 43.5766 ≈< d(LP) = 43.6657 ≈< e(Ha) = 43.6657 < c(DHS + LS) = 66.5494 < a(DHS) = 105.617 in MPa indicate that MLS, LP and HA are not significantly different, but less than DHS + LS or DHS in each. Conclusion : A fixture of MLS or LP with optional HA should be recommended to clinically optimize a Pauwels-I facture.
- Subjects :
- Adult
Biomechanical Phenomena
Bone Plates
Bone Screws
Elastic Modulus
Femoral Neck Fractures classification
Femoral Neck Fractures diagnosis
Femur diagnostic imaging
Femur injuries
Femur surgery
Finite Element Analysis
Fracture Fixation, Internal instrumentation
Hemiarthroplasty instrumentation
Hip Prosthesis
Humans
Imaging, Three-Dimensional
Materials Testing
Osteotomy instrumentation
Prosthesis Design
Tomography, X-Ray Computed
Femoral Neck Fractures surgery
Fracture Fixation, Internal methods
Hemiarthroplasty methods
Models, Biological
Osteotomy methods
Subjects
Details
- Language :
- English
- ISSN :
- 1521-0553
- Volume :
- 33
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Journal of investigative surgery : the official journal of the Academy of Surgical Research
- Publication Type :
- Academic Journal
- Accession number :
- 30516078
- Full Text :
- https://doi.org/10.1080/08941939.2018.1533054