About the topic

1. FLEXIBLE INTRAMEDULLARY
NAILS FOR
FRACTURES IN CHILDREN
BY: SATWIK KUMAR
ROLL NO. 63
G SECTION

2. INTRODUCTION
• Intramedullary Nailing is
used for the fixation of
fractures of long bones
in children and young
adults.
• Introduced in the early
1980s in France.

3. MATH COMPONENT
• Fubini’s Theorem

4. 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

5. ELECTRONICS COMPONENT
Basic part of the 3D
Printing.
• Microcontroller Board
• 4-Axis Stepper Motor
Amplifier Board

6. 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.

7. 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

8. 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

9. 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.

10. 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

11. 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.

12. PIC COMPONENT
G-CODE
• G-code is the common
name for numerical
control (NC) programmi
ng language.
• Part of computer-aided
engineering.
• 3D model is converted
into G-Code
instructions.
• Skeinforge

13. 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.

14. 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.

15. THANK YOU