ABSTRACT PRESENTATION 4 Copyright © by Indiana State University Clinical Practice in Athletic Training All rights reserved. ISSN Online 2577-8188 Volume 3 – Issue 1 – April 2020 Mesenchymal Stem Cells: Sources, Clinical Applications and Outcomes for Common Musculoskeletal Conditions Steven Boyton, MS, ATC, OTC; Lindsey Clemensen, MEd, ATC, OTC Flagstaff Bone and Joint, Flagstaff, AZ Full Citation Boyton S, Clemenson L. Mesenchymal stem cells: sources, clinical applications and outcomes for common musculoskeletal conditions. Clin Pract Athl Train. 2020;3(1):4-5. https://doi.org/10.31622/2020/0003.2. Presented at the 3rd Annual Athletic Trainers in the Physician Practice Society Meeting and Conference, Columbia South Carolina. February 28-29, 2020 ABSTRACT Background: The clinical use of Mesenchymal Stems Cells (MSC) in musculoskeletal medicine has become increasingly recognized in the medical field as a promising treatment modality. MSCs have been defined as spindle shaped cells that are capable of rapid proliferation and self- renewal contained within several tissues including bone marrow, synovial and adipose tissue, blood and periosteum. MSCs are currently being used in clinical trials for musculoskeletal purposes including the enhancement of tissue regeneration, bone and cartilage defects and tissue repair. Currently a variety of stem cell products, methods and applications are being used which can provide many misconceptions for the most appropriate use of this modality in orthopedics. The decision for the functionally relevant cell type is important to understand for providers to have the most effective outcomes. Methods: Common methods of evaluating the effect of MSCs in orthopedics include patient rated outcomes, advanced imaging comparisons, arthroscopic evaluation after treatment and gene expression analysis. A comprehensive literature review was conducted to evaluate the most high- level evidence available for MSC’s being utilized in orthopedics. This is important to understand for clinicians to make informed decisions for the most appropriate clinical applications of MSCs. Conclusion: Despite the many positive outcomes being demonstrated with MSC therapies, in the literature for various orthopedic conditions, the magnitude of these positive effects have been diverse due to the lack of standardization of the MSC cell product. Further research is required to provide an insight into long term outcomes relative to other treatment modalities. Additionally, research must also determine if the use of MSC therapies can become a viable treatment option for musculoskeletal pathologies in orthopedic practices to use with standardized products and processing methods. Clinical Bottom Line: The literature for MSC therapy outcomes that have been observed in clinical trials have been lacking standardization with regards to how stem cells are being obtained, processed and utilized for musculoskeletal conditions. Further research is required to provide an insight into long term outcomes relative to other treatment modalities. Additionally, research must also determine if the use of MSC therapies can become a viable treatment option for musculoskeletal pathologies in orthopedic practices to use with standardized products and processing methods. Correspondence Steven Boyton, 2292 Hano Trail, Flagstaff, AZ 86005. E-mail: sboyton@flagstaffboneandjoint.com REFERENCES 1. Kim JD, Lee GW, Jung GH, Kim CK, Kim T, Park JH, Cha SS, You YB. Clinical outcome of autologous bone marrow aspirates concentrate (BMAC) injection in degenerative arthritis of the knee. 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