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FLEXIBLE INTRAMEDULLARY
NAILS FOR
FRACTURES IN CHILDREN
BY: SATWIK KUMAR
ROLL NO. 63
G SECTION
INTRODUCTION
• Intramedullary Nailing isused for the fixation offractures of long bonesin children and youngadults.
• Introduced in the early1980s in France.
MATH COMPONENT• Fubini’s Theorem
MATH COMPONENT
• Fubini’s Theorem states that an object of n
dimensions can be represented as a spectrum of
layers of shapes of (n-1) dimensional layers.
• Uses the concept of double integration.
• Corollary
If f(x,y)=g(x)h(y) for some functions g and h, then
ELECTRONICS COMPONENT
Basic part of the 3D
Printing.
• Microcontroller Board
• 4-Axis Stepper Motor
Amplifier Board
ELECTRONICS COMPONENT•Microcontroller Board
Signals and instructions between
software and the hardware are
interchanged with the help
of the microcontroller board.
•Amplifier Board
Machine are given control
signals and power with the
help of this stepper motor
Amplifier board.
MECHANICAL COMPONENT
• Elastic Properties of the intramedullary nails.
• Nails Specification.
• Instruments used for inserting the nail into the fractured bone.
- Awl
- Inserter
- Power Drive
- Hammer
- Cutter
MECHANICAL COMPONENT
• Nails Specification
Material: Titanium – 6% aluminum – 7% niobium
alloy
Length: All nails are 440 mm and are cut to final
length intra operatively.
• Instruments
AWL: Create the Nail entry point
Inserter: Inserting the Nail
MECHANICAL COMPONENT
• Instruments
Hammer: Used with inserter for
nail insertion.
Power Drive: Used with the drill
Bit to make hole inside
the fractured bone.
Cutter: Cutting the nail to
length.
PIC COMPONENT
• Designing the model
with the help of a
software such as
openSCAD, SFACT,
CURA, etc.
• Exporting the designed
model as a “STL” file.
• G-CODE
PIC COMPONENT
STL
• “STL” is derived from the word “Stereolithography”.
• A STL file is actually a part model which resembles
a wireframe model consisting of triangles.
• A triangular mesh is used to
represent a face or side of the
part model.
PIC COMPONENT
G-CODE
• G-code is the common name for numerical control (NC) programming language.
• Part of computer-aided engineering.
• 3D model is converted into G-Code instructions.
• Skeinforge
CONCLUSION
• This technique ensures accurate and safe
stabilization of fractures of long bones in
children.
• Short hospital stays and a rapid return to daily
activity.
• Flexible intramedullary nailing has become a
front-line treatment for certain fractures of
long bones in children.
REFERENCES
[1]Flexible intramedullary nails for fractures in children M. Barry, J.
M. H. Paterson From Royal London Hospital, London, England.
[2]http://seminarprojects.n...g-technology-ppt
[3]http://peak5390.wordpress.com/2011/12/12/an-introduction-to-3d-
modeling-with-openscad.
[4] Features 3D Printing - FedoraProject.htm
[5] http://www.3dfuture.com.au/the-mathematics-of-3d-printing.
THANK YOU