Biomechanical comparison of supraacetabular external fixation and anterior pelvic bridge plating
| Autor: | Ali Turgay Çavuşoğlu, Mehmet Hakan Ozsoy, Fatma Kübra Erbay, Teyfik Demir |
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| Přispěvatelé: | TOBB ETU, Faculty of Engineering, Department of Mechanical Engineering, TOBB ETÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümü, Demir, Teyfik |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
supraacetabular external fixation
anterior pelvic bridge plating medicine.medical_specialty External fixator medicine.medical_treatment unstable biomechanics Pelvis 03 medical and health sciences High morbidity External fixation 0302 clinical medicine Fracture Fixation Pelvic ring Materials Testing Humans Medicine 030212 general & internal medicine Bridge (dentistry) Mechanical Phenomena 030222 orthopedics business.industry Mechanical Engineering Biomechanics Acetabulum General Medicine Biomechanical Phenomena Surgery body regions medicine.anatomical_structure business Bone Plates |
| Popis: | Unstable pelvic ring injuries are complex and risky injuries due to high morbidity and mortality. Although anterior pelvic external fixator is a suitable method for rapid stabilization of an injured pelvic ring, due to some disadvantages such as high complication rate, nerve damage, and difficulties of patient's mobility and comfort, there has recently been increased searching for alternative methods for stabilization of the pelvic ring. Pubic symphysis zone freely moves in pelvic models. This study aims to evaluate the biomechanical stability of anterior pelvic bridge plating and compare it with supraacetabular external fixators in an untreated unstable pelvic fracture model. Samples were loaded statically with 2-mm/min loading rate in single leg standing position. Maximum load was 2.3 kN. When loading the samples, photographs were taken continuously. Stiffness values were calculated from the load displacement curves. Some reference parameters were described and were measured from unloaded and 2.3-kN-loaded photographs of the test. The mean stiffness values were 491.14 +/- 52.22, 478.55 +/- 41.44, and 470.25 +/- 44.51 N/mm for anterior pelvic bridge plating group, supraacetabular external fixator group, and Control group, respectively. According to the measured parameters from photographs, the mean displacement at the pubic symphysis was 4.7 +/- 0.32, 15.8 +/- 2.01, and 18.2 +/- 0.47mm for anterior pelvic bridge plating, supraacetabular external fixator, and Control group, respectively. The highest displacement in the pubic symphysis was found in Control group, and minimum displacement was observed in anterior pelvic bridge plating group. When the perpendicular distance between the right and left lower end of ischium was examined, it was observed that displacement was minimum in anterior pelvic bridge plating group compared to other two groups, regarding to the high stability of pubic symphysis. In conclusion, this study revealed superiority of anterior subcutaneous plate fixation with biomechanical results. |
| Databáze: | OpenAIRE |
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