Summary: Biomechanical analysis of articular cartilage treated with a tissue engineering construct was feasible and capable to properly evaluate cartilage restoration by demonstrating the integrity and property through the determination of the Young Modulus of the cartilage with and without treatment.

Introduction

The chondral lesion and osteoarthritis are conditions associated with an economic burden, since if left untreated may cause changes in the biomechanics of the joint and result in several injuries considered highly disabling to the individual. Mesenchymal Stromal Cells (MSCs) have the immunomodulatory capacity and paracrine signaling that are useful for tissue bioengineering to treat bone and cartilage injuries. The articular cartilage is a viscoelastic material that can undergone structural and compositional changes; therefore it is important to assess the physical properties of the tissue through mechanical evaluation. To the best of our knowledge, there is no institution in Brazil studying cartilage biomechanical properties in Good Manufacturing Practice (GMP) technique. Objective: This study aims to describe biomechanics analysis for cartilage restoration by tissue engineering and cell therapy treatments in a GMP translational large animal model. Methods: A controlled experimental study in fourteen Brazilian miniature pigs was performed, using scaffold-free Tissue Engineering Construct (TEC) from dental pulp and synovial MSCs with 6 months follow-up. To compare the cartilage with and without TEC, three cycles of strain stress-relaxation indentation and maximum compressive tests were performed, as well as Finite Element (FE) model using ANSYS R17.2 to simulate the osteochondral block and characterize its properties. Indentation and maximum compressive tests assessed the properties of the solid matrix and mechanical proprieties of the tissue repair in control and treatment groups. Results: In preliminary analysis, the indentation response showed the hysteresis phenomenon evidencing the viscoelastic property of the articular cartilage. The FE analysis showed the force distribution in the osteochondral block. Conclusion: The proposed method was feasible and capable to properly evaluate articular cartilage restoration by demonstrating the cartilage integrity and property through the determination of the Young Modulus of the cartilage with and without TEC treatment.

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Trochlear Shape Patterns (TSP) in Normal and Dysplastic Trochleae Award Winner Nisarg Paresh Shah, MS, Mch, UNITED KINGDOM Rafael Sales Fernández, MD, UNITED KINGDOM
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Injury Patterns of Acute ACL Tears in Young Athletes Under the Age of 26 Years ePoster Presentation Matthias Schurhoff, MD, UNITED STATES Keith S. Hechtman, MD, UNITED STATES John E. Zvijac, MD, UNITED STATES Gautam Yagnik, MD, UNITED STATES Amelia Weingart, Medical Student, UNITED STATES Hans Drawbert, MS, UNITED STATES Sabrina Gill, Medical Student, UNITED STATES Anshul Saxena, BDS, PhD, UNITED STATES Luis A Vargas, MD, PhD, UNITED STATES John W. Uribe, MD, UNITED STATES
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Intra-Articular Mesenchymal Stem Cell Exosomes And Hyaluronic Acid Combination Therapy Promotes Safe And Functional Osteochondral Repair In A Porcine Model Abstract Presentation 6 minutes Keng Lin Francis Wong, MMed(Orth), MCI (NUS), FRCSEd (Orth), FAMS, PhD, SINGAPORE Shipin Zhang, PhD, SINGAPORE Xiafei Ren, PhD, SINGAPORE Ruenn Chai Lai, PhD, SINGAPORE Sai Kiang Lim, PhD, SINGAPORE James Hui, MBBS, FRCS, FAMS, M.D. (Orthopaedic Surgery), SINGAPORE Wei Seong Toh, PhD, SINGAPORE
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The Influence Of Patellar Erosion On Knee Range Of Motion Following Unicompartmental Knee Arthroplasty ePoster Presentation Dylan Singh, BSc, UNITED STATES Samantha Andrews, PhD, UNITED STATES Dylan Lawton, BS, UNITED STATES Kyle Kosei Obana, BA, UNITED STATES Cass K. Nakasone, MD, FACS, UNITED STATES
Arthroscopic-Assisted Robotic Bi-Unicompartmental Knee Arthroplasty: A Pilot Cadaveric Study. ePoster Presentation Andrea Fernandez, MD, FRANCE Elliot Sappey-Marinier, MD, FRANCE Frédéric Lavoie, MD, MSc, FRCSC, CANADA Cécile Batailler, MD, PhD, FRANCE Elvire Servien, MD, PhD, Prof., FRANCE Sebastien Lustig, MD, PhD, FRANCE
Isolated Lateral Collateral Ligament Injuries Encountered in Combat Sports: What is the Optimal Treatment? ePoster Presentation Nicole Danielle Rynecki, MD, UNITED STATES Kunj Jain, BS, UNITED STATES Harsh Shah, MD, UNITED STATES Robin M. Gehrmann, MD, UNITED STATES
Does The Tidemark Location Matter In Osteochondral Allograft Transplantation? – A Finite Element Analysis ePoster Presentation Amit K Manjunath, BS, UNITED STATES Martin J Pendola, PhD, UNITED STATES Eoghan T. Hurley, MB, BCh, MCh, IRELAND Charles C Lin, MD, UNITED STATES Laith M. Jazrawi, MD, UNITED STATES Michael J Alaia, MD, UNITED STATES Eric Jason Strauss, MD
Biological Subchondral Bone Treatment with Osteo Core Plasty: Preliminary Results ePoster Presentation Ignacio Dallo, MD, SPAIN Macarena Morales, MD, ITALY Gabriel Azzini, MD, ITALY Alberto Gobbi, MD, FRACS, ITALY
Pre-Operative Indicators of ACL Reconstruction Outcomes ePoster Presentation Martin Weaver, BS, UNITED STATES Vincent Bruno, BS, UNITED STATES Sean Nemeh, BS, UNITED STATES Muhammad Padela, MD, MSc, UNITED STATES Nicholas Bolz, MD, UNITED STATES Richard Chen, PhD, MD, UNITED STATES Henry Thomas Goitz, MD, UNITED STATES

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Biomechanical Analysis Of Tissue Engineering Construct For Articular Cartilage Restoration - A Pre-Clinical Study

Biomechanical Analysis Of Tissue Engineering Construct For Articular Cartilage Restoration - A Pre-Clinical Study

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Biomechanical Analysis Of Tissue Engineering Construct For Articular Cartilage Restoration - A Pre-Clinical Study

Biomechanical Analysis Of Tissue Engineering Construct For Articular Cartilage Restoration - A Pre-Clinical Study

Introduction