Osiris Therapeutics, Inc. (NASDAQ: OSIR), announced today that a scientific study evaluating the key attributes of Cartiform ® has been accepted for presentation at the 2014 American Academy of Orthopaedic Surgeons (AAOS) Annual Meeting, March 11-15, in New Orleans, Louisiana. C. Thomas Vangsness, Jr., MD, Professor of Surgery and Chief of Sports Medicine for the University of Southern California will present the findings of the study. Dr. Vangsness is scheduled to present on the Characterization Of A Novel Viable Cartilage Mesh For Microfracture Augmentation For Focal Chondral Defects on Tuesday, March 11 th at 9:42a.m. AAOS is the preeminent provider of musculoskeletal education to orthopaedic surgeons and its Annual Meeting is the largest orthopaedic meeting in the world. About Osiris Therapeutics Osiris Therapeutics, Inc., is the leading stem cell company, having developed the world’s first approved stem cell drug, Prochymal ®. Osiris currently markets Grafix ® and Ovation ® for wound and tissue repair, and Cartiform for cartilage repair. Osiris is a fully integrated company with capabilities in research, development, manufacturing and distribution of cell therapy products. Osiris has developed an extensive intellectual property portfolio to protect the company's technology, including 51 U.S. and 162 foreign patents. Osiris, Prochymal, Chondrogen, Grafix, Ovation and Cartiform are registered trademarks of Osiris Therapeutics, Inc. More information can be found on the company's website, www.Osiris.com. (OSIR-G) Forward-Looking Statements This press release contains forward-looking statements. Forward-looking statements include statements about our expectations, beliefs, plans, objectives, intentions, assumptions and other statements that are not historical facts. Words or phrases such as "anticipate," "believe," "continue," "ongoing," "estimate," "expect," "intend," "may," "plan," "potential," "predict," "project" or similar words or phrases, or the negatives of those words or phrases, may identify forward-looking statements, but the absence of these words does not necessarily mean that a statement is not forward-looking. Examples of forward-looking statements may include, without limitation, statements regarding any of the following: our product development efforts; our clinical trials and anticipated regulatory requirements, and our ability to successfully navigate these requirements; the success of our product candidates in development; status of the regulatory process for our biologic drug candidates; implementation of our corporate strategy; our financial performance; our product research and development activities and projected expenditures, including our anticipated timeline and clinical strategy for mesenchymal stem cells and biologic drug candidates and marketed Biosurgery products (including Prochymal, Chondrogen ®, Grafix, Ovation and Cartiform); our cash needs; patents, trademarks and other proprietary rights; the safety and ability of our products and potential products to treat disease; our ability to supply a sufficient amount of our marketed products or product candidates and, if approved or otherwise commercially available, products to meet demand; our costs to comply with governmental regulations; our plans for sales and marketing; our plans regarding facilities; types of regulatory frameworks we expect will be applicable to our products and potential products; and results of our scientific research. Forward-looking statements are subject to known and unknown risks and uncertainties and are based on potentially inaccurate assumptions that could cause actual results to differ materially from those expected or implied by the forward-looking statements. Our actual results could differ materially from those anticipated in forward-looking statements for many reasons, including the factors described in the section entitled "Risk Factors" in our Annual Report on Form 10-K and other Periodic Reports filed on Form 10-Q, with the United States Securities and Exchange Commission. Accordingly, you should not unduly rely on these forward-looking statements. We undertake no obligation to publicly revise any forward-looking statement to reflect circumstances or events after the date of this press release or to reflect the occurrence of unanticipated events.