Custom made implants using Additive Technology Future of personalized joint replacement solutions and orthopaedic products SESVETE (ZAGREB), Rimski put 31, 10360 Sesvete P.P. 10 / Tel. +385 (0)1 5550500, 5550511; / TELEFAX +385 (0)1 5550512, 5550521, 5550550 EMAIL: instrumentaria@instrumentaria.hr www.instrumentaria.hr 1
Custom Made Case - 15 Year Old Male Pelvic Tumor Medical Team: prof. dr. Robert Kolundžić, dr.sc. Srećko Sabalić, dr. Tadija Petrović, dr. Tomislav Čengić Instrumentaria R&D team: Krešimir Šoštarko, Atif Cakor FEA testing: Dr. sc. Janoš Kodvanj, Faculty of Mechanical Engineering Project Startup : 01.04.2014 Surgery Date : 12.05.2014 2
15 Year old Male diagnosed with a tumor in the left pelvis Tumor infected whole Acetabulum and Ilium area and Femoral head Surgeons indicated treatment with THA with Custom Made Pelvis implant Patient Condition required quick respond Comprehensive portfolio of standard traumatology and orthopedic products in some cases is not sufficient enough for a successful operation. Due to the spread of the tumor at the pelvis, it was necessary to make greater resection which required development of custom made pelvis implant in accordance with the estimated position of the resection. The solution proposed in this project is a synergy of three aspects of expertise: strategic planning and medical design expertise, medical industry and 3D printing expertise. 3
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The basis for this specially designed implant is patient CT data based on which experts constructed threedimensional models, which is a prerequisite for the design of implants that will comply with the requirements for each specific case. Segmentation Process on 300 axial slices with 1 mm slice thickness followed by noise reduction 5
Creating 3D Model of Right Pelvis, Sacrum and Left Pelvis DETERMINATION OF RESECTION POSITION Workshop with surgeons Creating 3D CAD Model 6
2.1 Implant Cavity Construction 2.2 Liner Slot Construction 2.3 Holes Construction 2.4 - Construction of Supporting Columns 2.5 Implant cutting on the top of the pelvis 2.6 Docking Construction toward upper part of the pelvis 2.6 Implant cutting on the bottom side of the pelvis 2.7 Support Construction for fixation with bone 7
3D Validation of the Final Model 8
FEA Testing Strain and Micromotion Testing 9
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Implant Verification 11
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Final Product : Custom Made Titanium alloy Pelvis Implant 13
Other THA Components : 1. Custom Made UHMWPE Acetabular Liner 2. Instrumentaria Zweymuller stem 3. Co-Cr Femoral Head 12/14 14
Surgical Procedure and Implantation 15
Pre-OP 3D model Post-Op X-Ray 16
Similar Custom Made implants projects using 3D print technology: 17
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Pre-Op Model Post-OP X-Ray 19
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