Comparison of parallel or convergent proximal schanz screw placement of pertrochanteric fixator in intertrochanteric fracture model
Intertrochanteric femoral fractures are serious traumas among elderly patients. In these patients, external fixator is a preferable method for the fixation of fractures. Therefore, this study was planned to compare the parallel and convergent proximal schanz screw placement of pertrochanteric fi...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Copernicus Publications
2017-08-01
|
Series: | Mechanical Sciences |
Online Access: | https://www.mech-sci.net/8/259/2017/ms-8-259-2017.pdf |
id |
doaj-6fa6b3e5fba44c9a92bbfd484b2ca4f6 |
---|---|
record_format |
Article |
spelling |
doaj-6fa6b3e5fba44c9a92bbfd484b2ca4f62020-11-24T21:18:17ZengCopernicus PublicationsMechanical Sciences2191-91512191-916X2017-08-01825926610.5194/ms-8-259-2017Comparison of parallel or convergent proximal schanz screw placement of pertrochanteric fixator in intertrochanteric fracture modelA. Gok0S. Inal1F. Taspinar2E. Gulbandilar3K. Gok4Amasya University, Technology Faculty, Mechanical Engineering, 05000 Amasya, TurkeyDumlupinar University, School of Medicine, Department of Orthopaedics and Traumatology, Campus of Evliya Celebi, 43100 Kutahya, TurkeyDumlupinar University, School of Health Science, Department of Physiotherapy and Rehabilitation, 43100 Kutahya, TurkeyEskisehir Osmangazi University, Faculty of Engineering & Architecture, Department of Computer Engineering, Meselik Campus, 26480 Eskisehir, TurkeyManisa Celal Bayar University, Hasan Ferdi Turgutlu Teknoloji Fakültesi, Mechanical and Manufacturing Engineering, 45400 Manisa, TurkeyIntertrochanteric femoral fractures are serious traumas among elderly patients. In these patients, external fixator is a preferable method for the fixation of fractures. Therefore, this study was planned to compare the parallel and convergent proximal schanz screw placement of pertrochanteric fixator in the intertrochanteric femoral fractures with respect to biomechanical forces that stabilize the fracture line and to present their clinical importance. A commercial finite element based program, AnsysWorkbench was used to investigate the biomechanical parameters of the femoral intertrochanteric fractures and different placement of implants. The von Mises stress, von Mises strain and shear stress on the proximal and distal surface of the fracture line were lower in the convergent pertrochanteric fixator. Proximal schanz screws in convergent configuration pertrochanteric fixator had greater stress and strain values than proximal schanz screws in parallel configuration pertrochanteric fixator. The distance between the proximal schanz screws on the fracture line was measured as 12 mm in convergent configuration pertrochanteric fixator, and as 3.5 mm in parallel configuration pertrochanteric fixator. The angle between the proximal schanz screws in the convergent configuration was measured as 12.88°. The effect of convergent and parallel configuration pertrochanteric fixators on axial loading demonstrated that convergent configuration pertrochanteric fixator was safer in this respect.https://www.mech-sci.net/8/259/2017/ms-8-259-2017.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A. Gok S. Inal F. Taspinar E. Gulbandilar K. Gok |
spellingShingle |
A. Gok S. Inal F. Taspinar E. Gulbandilar K. Gok Comparison of parallel or convergent proximal schanz screw placement of pertrochanteric fixator in intertrochanteric fracture model Mechanical Sciences |
author_facet |
A. Gok S. Inal F. Taspinar E. Gulbandilar K. Gok |
author_sort |
A. Gok |
title |
Comparison of parallel or convergent proximal schanz screw placement of pertrochanteric fixator in intertrochanteric fracture model |
title_short |
Comparison of parallel or convergent proximal schanz screw placement of pertrochanteric fixator in intertrochanteric fracture model |
title_full |
Comparison of parallel or convergent proximal schanz screw placement of pertrochanteric fixator in intertrochanteric fracture model |
title_fullStr |
Comparison of parallel or convergent proximal schanz screw placement of pertrochanteric fixator in intertrochanteric fracture model |
title_full_unstemmed |
Comparison of parallel or convergent proximal schanz screw placement of pertrochanteric fixator in intertrochanteric fracture model |
title_sort |
comparison of parallel or convergent proximal schanz screw placement of pertrochanteric fixator in intertrochanteric fracture model |
publisher |
Copernicus Publications |
series |
Mechanical Sciences |
issn |
2191-9151 2191-916X |
publishDate |
2017-08-01 |
description |
Intertrochanteric femoral fractures are serious traumas among elderly
patients. In these patients, external fixator is a preferable method for the
fixation of fractures. Therefore, this study was planned to compare the
parallel and convergent proximal schanz screw placement of pertrochanteric
fixator in the intertrochanteric femoral fractures with respect to
biomechanical forces that stabilize the fracture line and to present their
clinical importance. A commercial finite element based program,
AnsysWorkbench was used to investigate the biomechanical parameters of the
femoral intertrochanteric fractures and different placement of implants. The
von Mises stress, von Mises strain and shear stress on the proximal and
distal surface of the fracture line were lower in the convergent
pertrochanteric fixator. Proximal schanz screws in convergent configuration
pertrochanteric fixator had greater stress and strain values than proximal
schanz screws in parallel configuration pertrochanteric fixator. The
distance between the proximal schanz screws on the fracture line was
measured as 12 mm in convergent configuration pertrochanteric
fixator, and as 3.5 mm in parallel configuration pertrochanteric
fixator. The angle between the proximal schanz screws in the convergent
configuration was measured as 12.88°. The effect of convergent and
parallel configuration pertrochanteric fixators on axial loading
demonstrated that convergent configuration pertrochanteric fixator was safer
in this respect. |
url |
https://www.mech-sci.net/8/259/2017/ms-8-259-2017.pdf |
work_keys_str_mv |
AT agok comparisonofparallelorconvergentproximalschanzscrewplacementofpertrochantericfixatorinintertrochantericfracturemodel AT sinal comparisonofparallelorconvergentproximalschanzscrewplacementofpertrochantericfixatorinintertrochantericfracturemodel AT ftaspinar comparisonofparallelorconvergentproximalschanzscrewplacementofpertrochantericfixatorinintertrochantericfracturemodel AT egulbandilar comparisonofparallelorconvergentproximalschanzscrewplacementofpertrochantericfixatorinintertrochantericfracturemodel AT kgok comparisonofparallelorconvergentproximalschanzscrewplacementofpertrochantericfixatorinintertrochantericfracturemodel |
_version_ |
1726009889909637120 |