About the Authors

Joseph Bernstein

orthodoc@uphs.upenn.edu

Affiliations Department of Orthopedic Surgery, Veterans Hospital, Philadelphia, Pennsylvania, United States of America, Department of Orthopedic Surgery, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America

Joy S. Long

Affiliation Department of Orthopedic Surgery, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America

Christian Veillette

Affiliation Department of Orthopedic Surgery, University of Toronto, Toronto, Ontario, Canada

Jaimo Ahn

Affiliation Department of Orthopedic Surgery, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JB JSL JA CV. Performed the experiments: JB JSL JA CV. Analyzed the data: JB JSL JA CV. Wrote the paper: JB JA.