This document discusses the use of 3D printing and rapid prototyping in complex orthopedic surgeries such as those involving the acetabulum or pelvis. It describes how CT scan data is used to create 3D models of the bone which can then be printed. These models allow surgeons to simulate the procedure beforehand in order to plan osteotomies, choose implants, and define screw trajectories. Case examples are provided of acetabular fractures where 3D printing helped achieve better reductions and outcomes. While advantageous, limitations include cost, time requirements, and infrastructure needs.

1. 3D PRINTING IN COMPLEX
ARTHROPLASTY &
ACETABULUM #
Dr Vaibhav Bagaria
MBBS, MS, FCPS
Consultant Hip & Knee Surgeon
Sir HN Reliance Foundation Hospital,
Mumbai, India

2. QUICK SURVEY
How many of us believe in Preoperative
planning?
How many of us have heard of 3D
Printing?

3. BIT HYPED UP?

4. SUCCESFUL SURGERY
Understanding the # pattern/ Anatomy
Good Reduction
Choosing the Right Implant
Contouring it Well
Accurate well defined screw trajectories

5. WHAT IS 3D P OR RP?
Rapid Prototyping is a group of techniques that is
used to quickly fabricate a scale model of a
physical part or assembly using three
dimensional computer aided design (CAD) data.

6. RP PROCESS
Rapid Prototyping is a method in which the part
is created by additive process.
Using a specialized software (MIMICS), a 3-D
CAD model is cut into very thin layers or cross-
sections.
RP machine constructs the part layer by layer
until solid replica of the CAD model is generated.
The model can then be used for various purpose
– in our case for surgical simulation and implant
instrument designing.

7. PROCESS FLOW

8. STEP 1& II CT SCAN
IMAGE PROCESSING
Obtain DIACOM Files

9. STEP III: RAPID
PROTOTYPING

10. VIDEO OF 3D PRINTING

11. CONVENTIONAL USE

12. ORTHOPEDIC
APPLICATION
Surgical simulation for complex fractures like
acetabulum, Spine, Calcaneum, periarticular #.
Planning osteotomy & deformity correction.
Customized Prosthesis Design for revision and
difficult case
Patient Specific instrumentation for enhanced
intraoperative accuracy & Ease.
Modify Existing Prosthesis design to suit local
needs

13. PROCESS FLOW

14. CASE EXAMPLE
25 year old male
H/o RTA
Acetabular fracture
Assoc injury: Lower 1/3 radius #

15. CT SCAN

16. SOFTWARE

17. RP MODEL

18. RP VIDEO

19. SURGICAL SIMULATION

20. OPERATING PROCEDURE

21. POST OP CT SCANS

22. PELVIC DIASTASIS

23. POST COLUMN

24. BICOLUMNAR #

26. CONTOURING VIDEO

27. JOINT REPLACEMENT
BONE E DEFECTS

28. REVISION HIP VIDEO

29. CASE: UNREDUCED
DISLOCATION FOR THR

31. SIMULATING WITH
REAMER

32. DEFECT PLANNING

33. KNOWING BONE STATUS

34. ASR FANS: CENTRE
LOCALISTION

35. ADVANTAGES OF RP
Reduced the surgical time
Better understanding of the Fracture
configuration
Decreased the requirement of anesthetic dosage
Decreased intra-operative blood loss
Helped to achieve near anatomical reduction

36. LIMITATION
Cost
Time
Infrastructure
Operator dependant
Preoperative effort

37. PUBLICATIONS

38. BOOK CHAPTER &
PATENTS

39. IN DEVELOPMENT

40. ACKNOWLEDGMENTS

41. www.drbagaria.com