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High Quality Low Cost High Quality Low Cost Tumour Tumour Knee Prosthesis Knee Prosthesis Team OrthoCAD Mechanical Engineering Department Mechanical Engineering Department IIT Bombay, Mumbai

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Page 1: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

High Quality Low Cost High Quality Low Cost TumourTumour Knee ProsthesisKnee Prosthesis

Team OrthoCAD

Mechanical Engineering DepartmentMechanical Engineering Department IIT Bombay, Mumbai

Page 2: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Bone tumor in children:b t t d

Frugal ManufacturingModular rotating hinge knee prosthesis

OrthoCAD Project [Funded by the Office of the Principal Scientific Advisor to the Govt. of India]

cancer can be treated but limb is amputated

RP ► wax pattern ► investment casting

Ti‐6Al‐4VStem

HAHA Collar

Co‐Cr‐MoCondyle

Walking SimulatorImplant Safetyand Accuracy

Symphony

UHMWPETibial Poly

Walking Simulatorand Accuracy

CAD model

RP model

Final Prosthesis

Surgery plan

Limb saving surgery: 

OrthoSYS: 3D surgery planning software

NovelSurgicalInstruments

g g yResect  tumour bone, reconstruct gap using prosthesis (imported) 

Page 3: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

How It Started 

F b 2004 T t M i l H it lFeb 2004, Tata Memorial Hospital

First GMRS TKP implantation in India by Dr. Manish Agarwal

Page 4: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Indigenous Knee Prosthesis: Implantation

Page 5: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Orthopaedic and other Reconstruction Projects 

Maxillofacial Reconstruction by Distraction Osteogenesis

Auricular Reconstruction

Pelvic Joint Reconstruction

Page 6: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Tumour Knee Prosthesis – High Quality – by Design and Testing

Anatomy Functionality

Structural Safety Service Lifey

Page 7: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Tumour Knee Prosthesis – Low Cost – by Frugal Manufacturing 

Material Characteristics

Co‐Cr High wear resistance

Ti‐Al‐V Strength/weight ratio

UHMWPE Low friction and wear

Certified Biomaterials Hot Die Forming

Metal Casting Finish Machining g g

Page 8: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Prosthesis Implantation – High Accuracy – by Novel Instruments 

Femoral Measurement and Cutting JigError‐prone protocol replaced with guided device

PATENT

Tibial Cutting Jig ensures cutting plane is perpendicular to bone canalTibial Cutting Jig ensures cutting plane is perpendicular to bone canal

Page 9: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Prosthesis Implantation – Less Surgery Time – by Preop Planning

3D Model Bone StockDeformitiesLandmarksCT Images

Selection Alignment

Page 10: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Stress AnalysisFEM Mesh

Project Lead Time Compression – by CAx Integration 

3D CADModel

FEM Mesh

FEM Analysis

Voxel model

CondyleModel

RP Model Ceramic ShellCasting Simulation

CNC Tool Path

Computer navigation Casting Simulation

CNC Tool PathAutomated Inspection

CNC Machining

Cast CondyleFinish Condyle

Page 11: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Knowledge Dissemination – Clinicians, Teachers, Students

Page 12: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Knowledge Dissemination – Print Media and Publications 

Page 13: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Further Directions – Clinical Trials and OrthoCAD Phase II 

Page 14: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

New Collaborations – Medical Institutes and Hospitals 

Network Enabled Medical Diagnosis & EducationNetwork Enabled Medical Diagnosis & Education in Skeletal Imaging using X‐RaysAIIMS and NIC

Indigenous Arthritic Knee Anatomy and Implant

ARTHRITIC KNEENORMAL KNEE

Page 15: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

New Collaborations – Orthopedics Manufacturers

Indigenous ShoulderIndigenous Shoulder and Elbow ProsthesisSushrut Surgicals

Safety Evaluation of Bone Plates 

Page 16: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

OrthoCAD Lab – Refurbishment (March‐July 2009) 

Page 17: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

OrthoCAD Lab – Today  

Page 18: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

OrthoCAD Team – IIT B, NFTDC Hyderabad, Dr. Manish Agarwal

Thank you!PSA’ Office & PRMC: Dr. R. Chidambaram, Mr. Neeraj Sinha, Dr. P.P. Kotwal, Dr. G. Bhuvaneshwar, Dr. V.K. Suri, Dr. S. Rastogi

NFTDC Hyderabad: Dr. K. Balasubramanian, Nirmal Panda, Nagsen Phule, Nitin Kanoongo, Shiva Gautam, P. K. Jayakumar,           

Thank you!

D. Lokeshwara Rao, Sarika Mishra, Shireesha, Rati Ranjana, M. Govinda Raju, Udai Raj Kumar, Soby Verghase, Satyam Babu

IITB Project Team: K. Subburaj, Rupesh Ghyar, Sandeep Anasane, Vikas Karade, Ravi Kumar, Himanshu Mangal, Kapil Kumar Rathi, Shanta Kumar, Siddharth Sekhsaria, Anshul Pandey, Ajay Kashyap, Amar Jadhav, Chinmay Kantak, Soumyojit Sen

IITB Admin: Prof. D.V. Khakhar, Prof. R.K. Mallik, Prof. K.V.K. Rao, Prof. Prof. S.L. Bapat. IDC: Prof. B.K. Chakravarthy, , , p y

IRCC: Prof. K. Ramamritham, Prof. Kurien Issac, Prof. Rangan Banerjee, Sandhya Gholkar Varada Kulkarni, Ravindra Gaikwad

Estate Office: V.B. Mamdapur, K.R.P. Unnithan, Rajesh Mate, Mr. B.K. Sahoo, Adhare, Bagde, Shaikh; Lalit Asso.: Rajiv Shah

Page 19: High Quality Low Cost TumourTumour Knee Knee Prosthesis · 2011. 11. 17. · CNC Machining Finish Condyle Cast Condyle. Knowledge Dissemination –Clinicians, Teachers, Students

Challenge – Growing Children – Minimal / Non‐Invasive Solution