Analysis of mechanical strength to fixing the femoral neck fracture in synthetic bone type Asnis
| Autor: | Jonathan Sampaio de Oliveira, Patrick F Godinho, Welder Fernandes Lula, Rafael Almeida Maciel, Diogo Ranier de Macedo Souto, Anderson Freitas |
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| Rok vydání: | 2014 |
| Předmět: |
medicine.medical_specialty
medicine.medical_treatment Physical Therapy Sports Therapy and Rehabilitation Osteotomy Femoral Neck Fractures Biomechanical phenomena Mechanical strength medicine Orthopedics and Sports Medicine Displacement (orthopedic surgery) Fixation (histology) Femoral neck Orthopedic surgery Orthodontics Femoral neck fractures business.industry Rehabilitation Synthetic bone Surgery medicine.anatomical_structure Fracture (geology) Medicine Original Article business RD701-811 Fracture fixation internal |
| Zdroj: | Acta Ortopédica Brasileira, Volume: 22, Issue: 4, Pages: 206-209, Published: JUL 2014 Acta Ortopédica Brasileira, Vol 22, Iss 4, Pp 206-209 (2014) Acta Ortopedica Brasileira Acta Ortopédica Brasileira v.22 n.4 2014 Acta Ortopédica Brasileira Sociedade Brasileira de Ortopedia e Traumatologia (SBOT) instacron:SBOT |
| ISSN: | 1413-7852 |
| Popis: | OBJECTIVE: To analyze the results of biomechanical assays of fixation of Pauwels type III femoral neck fracture in synthetic bone, using 7.5mm cannulated screws in inverted triangle formation, in relation to the control group. METHODS: Ten synthetic bones were used, from a domestic brand, divided into two groups: test and control. In the test group, a 70° tilt osteotomy of the femoral neck was fixated using three cannulated screws in inverted triangle formation. The resistance of this fixation and its rotational deviation were analyzed at 5mm displacement (phase 1) and 10mm displacement (phase 2). The control group was tested in its integrity until the fracture of the femoral neck occurred. The Mann-Whitney test was used for group analysis and comparison. RESULTS: The values in the test group in phase 1, in samples 1-5, showed a mean of 579N and SD =77N. Rotational deviations showed a mean of 3.33°, SD = 2.63°. In phase 2, the mean was 696N and SD =106N. The values of the maximum load in the control group had a mean of 1329N and SD=177N. CONCLUSION: The analysis of mechanical strength between the groups determined a statistically significant lower value in the test group. Level of Evidence III, Control Case. |
| Databáze: | OpenAIRE |
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