Rapid prototyping & acetabulum fractures

Dr Vaibhav BagariaMBBS, MS, FCPS

Consultant Hip & Knee SurgeonCARE Hospital & ORIGYN Clinic, Nagpur

Apollo Hosp, NCR Delhi

What is 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.

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.

process flow

Step 1 CT SCAN

Obtain DIACOM Files

Step 2: Image processing

Step III: Rapid Prototyping

Conventional Use

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

process flow

case example

25 year old male

H/o RTA

Acetabular fracture

Assoc injury: Lower 1/3 radius #

ct scan

software

rP model

rp video

QuickTime™ and aMotion JPEG OpenDML decompressor

are needed to see this picture.

surgical simulation

operating procedure

post op ct scans

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

Joint replacement PSI

Joint replacement Bone e defects

Calcaneal Fractures

Spine deformity

Limitation

Cost

Time

Infrastructure

Operator dependant

Preoperative effort

publications

book Chapter & patents

www.drbagaria.com