Biomechanical analysis of different locations of locking in intramedullary nail using test bodies with critical failure

• Grant number: 18/03382-5
• Support Opportunities: Scholarships in Brazil - Master
• Start date: May 01, 2018
• End date: February 29, 2020
• Field of knowledge: Agronomical Sciences - Veterinary Medicine - Animal Clinics and Surgery
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Luis Gustavo Gosuen Gonçalves Dias
• Grantee: Caio Afonso dos Santos Malta
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

The present work aims to evaluate biomechanically (axial compression test) different positions and quantity of screws bolts blocked to the new model of intramedullary nail in a simulation of complex diaphysis fracture (comminution) in standardized test bodies. The specimens will have support at the end for grip on the testing machines and are fabricated from the polylactic acid by 3D printer. The non-experiment used rod will be developed with 6 holes (termed 1 to 6 from proximal to distal) with threads three at each end (proximal and distal). A specific program (bench) is developed so that there is complete standardization and accurate insertion of the intramedullary haste and blockages in the specimens. There will be 28 samples divided into 4Groups, in Group 1 (G1) the rod will be blocked in holes 1 and 6. No Group 2 (G2) will block the proximal holes 1 and 2, and the distal holes 5 and 6. For Group 3 (G3) is fixed in holes 2 and 3 (proximal segment) and 4 and 5 (distal segment). Already in Group 4 (G4) all the holes, 1, 2, 3, 4, 5 and 6, are blocked by screws. The axial compression tests are performed by a specific test machine connected to the computer system for data acquisition. The data are oriented between the four Groups (G1, G2, G3 and G4), resulting in seven replicates for each combination. As the means are compared with the test, the Student comes with a significance of 5%. (AU)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

MALTA, Caio Afonso dos Santos. Biomechanical analysis of different locking locations in angle-stable intramedullary interlocking nail using a synthetic bone model with critical failure. 2020. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal Jaboticabal.