Personnel

Michael J. Hejna, M.D., Ph.D., President

Dr. Hejna is a Board-certified orthopedic surgeon with an active practice specializing in cartilage repair. He trained under Dr. Allan Gross of the University of Toronto, the recognized world leader in the field of cartilage transplantation. Dr. Hejna holds a Ph.D. in biochemistry from Rush University in Chicago.

Koichi Masuda, M.D., Vice President, Director of Research and Development

Dr. Masuda is an orthopedic surgeon who holds an appointment in the Department of Orthopedic Surgery at Rush Medical College in Chicago. With eight years experience as a full-time investigator in the field of cartilage biochemistry, he is positioned as a critical bridge between academia and surgical practice. He has published extensively related to the behavior of cartilage cells.

Eugene Thonar, Ph.D., Vice President, Secretary and Treasurer

Dr. Thonar is the George W. Stuppy, M.D., Professor of Arthritis at Rush Medical College, where his primary appointment is in the Department of Biochemistry and he holds conjoint appointments in the Departments of Orthopedic Surgery and Internal Medicine. He has published over 180 original manuscripts on the structure and behavior of cartilage, and he is on the editorial boards of several orthopedic and scientific journals.

Howard S. An, M.D., Vice President, Director of Clinical Investigation

Dr. An is Professor of Orthopedic Surgery at Rush Medical College in Chicago where he holds an endowed chair. He has published extensively and is internationally renowned in his field.

Brian E. Pfister, Ph.D.,  Senior Research Scientist and General Manager

Charis A. Merrihew, Ph.D.,  Research Scientist

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