Biomechanical evaluation of two commonly used external fixators in the treatment of open subtalar dislocation-a finite element analysis
Subtalar dislocation is a rare injury caused by high-energy trauma. Current treatment strategies include leg casts, internal fixation and external fixation. Among these, external fixators are the most commonly used as this method is believed to provide better stabilization. However, the biomechanica...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Published: |
Elsevier Ltd.
2014
|
| Subjects: |
| _version_ | 1796859700651753472 |
|---|---|
| author | Ramlee, Muhammad Hanif Abdul Kadir, Mohammed Rafiq Murali, Malliga Raman Tunku Zainol Abidin, Tunku Kamarul Zaman |
| author_facet | Ramlee, Muhammad Hanif Abdul Kadir, Mohammed Rafiq Murali, Malliga Raman Tunku Zainol Abidin, Tunku Kamarul Zaman |
| author_sort | Ramlee, Muhammad Hanif |
| collection | ePrints |
| description | Subtalar dislocation is a rare injury caused by high-energy trauma. Current treatment strategies include leg casts, internal fixation and external fixation. Among these, external fixators are the most commonly used as this method is believed to provide better stabilization. However, the biomechanical stability provided by these fixators has not been demonstrated. This biomechanical study compares two commonly used external fixators, i.e. Mitkovic and Delta. CT imaging data were used to reconstruct three-dimensional models of the tibia, fibula, talus, calcaneus, navicular, cuboid, three cuneiforms and five metatarsal bones. The 3D models of the bones and cartilages were then converted into four-noded linear tetrahedral elements, whilst the ligaments were modelled with linear spring elements. Bones and cartilage were idealized as homogeneous, isotropic and linear. To simulate loading during walking, axial loading (70. N during the swing and 350. N during the stance phase) was applied at the end of diaphyseal tibia. The results demonstrate that the Mitkovic fixator produced greater displacement (peak 3.0. mm and 15.6. mm) compared to the Delta fixator (peak 0.8. mm and 3.9. mm), in both the swing and stance phase, respectively. This study demonstrates that the Delta external fixator provides superior stability over the Mitkovic fixator. The Delta fixator may be more effective in treating subtalar dislocation. |
| first_indexed | 2024-03-05T19:31:06Z |
| format | Article |
| id | utm.eprints-52014 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:31:06Z |
| publishDate | 2014 |
| publisher | Elsevier Ltd. |
| record_format | dspace |
| spelling | utm.eprints-520142018-11-30T07:00:18Z http://eprints.utm.my/52014/ Biomechanical evaluation of two commonly used external fixators in the treatment of open subtalar dislocation-a finite element analysis Ramlee, Muhammad Hanif Abdul Kadir, Mohammed Rafiq Murali, Malliga Raman Tunku Zainol Abidin, Tunku Kamarul Zaman R Medicine (General) Subtalar dislocation is a rare injury caused by high-energy trauma. Current treatment strategies include leg casts, internal fixation and external fixation. Among these, external fixators are the most commonly used as this method is believed to provide better stabilization. However, the biomechanical stability provided by these fixators has not been demonstrated. This biomechanical study compares two commonly used external fixators, i.e. Mitkovic and Delta. CT imaging data were used to reconstruct three-dimensional models of the tibia, fibula, talus, calcaneus, navicular, cuboid, three cuneiforms and five metatarsal bones. The 3D models of the bones and cartilages were then converted into four-noded linear tetrahedral elements, whilst the ligaments were modelled with linear spring elements. Bones and cartilage were idealized as homogeneous, isotropic and linear. To simulate loading during walking, axial loading (70. N during the swing and 350. N during the stance phase) was applied at the end of diaphyseal tibia. The results demonstrate that the Mitkovic fixator produced greater displacement (peak 3.0. mm and 15.6. mm) compared to the Delta fixator (peak 0.8. mm and 3.9. mm), in both the swing and stance phase, respectively. This study demonstrates that the Delta external fixator provides superior stability over the Mitkovic fixator. The Delta fixator may be more effective in treating subtalar dislocation. Elsevier Ltd. 2014 Article PeerReviewed Ramlee, Muhammad Hanif and Abdul Kadir, Mohammed Rafiq and Murali, Malliga Raman and Tunku Zainol Abidin, Tunku Kamarul Zaman (2014) Biomechanical evaluation of two commonly used external fixators in the treatment of open subtalar dislocation-a finite element analysis. Medical Engineering and Physics, 36 (10). pp. 1358-1366. ISSN 1350-4533 http://dx.doi.org/10.1016/j.medengphy.2014.07.001 DOI: 10.1016/j.medengphy.2014.07.001 |
| spellingShingle | R Medicine (General) Ramlee, Muhammad Hanif Abdul Kadir, Mohammed Rafiq Murali, Malliga Raman Tunku Zainol Abidin, Tunku Kamarul Zaman Biomechanical evaluation of two commonly used external fixators in the treatment of open subtalar dislocation-a finite element analysis |
| title | Biomechanical evaluation of two commonly used external fixators in the treatment of open subtalar dislocation-a finite element analysis |
| title_full | Biomechanical evaluation of two commonly used external fixators in the treatment of open subtalar dislocation-a finite element analysis |
| title_fullStr | Biomechanical evaluation of two commonly used external fixators in the treatment of open subtalar dislocation-a finite element analysis |
| title_full_unstemmed | Biomechanical evaluation of two commonly used external fixators in the treatment of open subtalar dislocation-a finite element analysis |
| title_short | Biomechanical evaluation of two commonly used external fixators in the treatment of open subtalar dislocation-a finite element analysis |
| title_sort | biomechanical evaluation of two commonly used external fixators in the treatment of open subtalar dislocation a finite element analysis |
| topic | R Medicine (General) |
| work_keys_str_mv | AT ramleemuhammadhanif biomechanicalevaluationoftwocommonlyusedexternalfixatorsinthetreatmentofopensubtalardislocationafiniteelementanalysis AT abdulkadirmohammedrafiq biomechanicalevaluationoftwocommonlyusedexternalfixatorsinthetreatmentofopensubtalardislocationafiniteelementanalysis AT muralimalligaraman biomechanicalevaluationoftwocommonlyusedexternalfixatorsinthetreatmentofopensubtalardislocationafiniteelementanalysis AT tunkuzainolabidintunkukamarulzaman biomechanicalevaluationoftwocommonlyusedexternalfixatorsinthetreatmentofopensubtalardislocationafiniteelementanalysis |