Brendan Williams, MD

The Children’s Hospital of Philadelphia “Development of A Trochlear Dysplasia Porcine Model - A Pilot Study” 

Matthew Halanski, MD

Phoenix Children’s Hospital “Decreasing the Morbidity of Neuromuscular Hip Treatment”

Hiroko Matsumoto, PhD

Boston Children’s Hospital “Impact of SMN2 Copy Number on Musculoskeletal Pathoanatomy in SMA Children”

Eric W. Edmonds, MD; David D. Spence, MD; Michael Quinn; Benton E. Heyworth, MD

Outcomes Following Operative vs. NonOperative Treatment of Completely Displaced Midshaft Clavicle Fractures in Adolescent Baseball Players and Other Overhead Athletes

Sanjoy Kumar Ghorai; Patrick William Whitlock, MD, PhD; Sumit Murab; Anish Gangavaram; Chia-Ying James Lin; Jenna Hall 

Fabrication of a Biomimetic 3D Printed Scaffold for the Treatment of Large Osteochondral Defects in an Adolescent Porcine Model: Outcomes at 6 Months

Beltran Torres-Izquierdo; Abhishek Tippabhatla; Keith D. Baldwin, MD; V. Salil Upasani, MD; Julia Skye Sanders, MD; Rachel Goldstein, MD; Jaime Rice Denning, MD, MS; Claire Schaibley; Pooya Hosseinzadeh, MD

Operative versus Nonoperative Treatment of Displaced Proximal Humerus Fractures in Adolescents: Results of a Prospective Multicenter Study

Charles E. Johnston, MD

Charles (“Charlie”) E. Johnston, MD, is assistant chief of staff emeritus at Texas Scottish Rite Hospital for Children, where he practiced continuously since 1985, until his retirement from direct patient care in 2021. A native of Los Angeles, with family ties to south Texas, he graduated from Yale University and Columbia University College of Physicians and Surgeons, completed a
surgical internship in San Antonio, and an orthopaedic surgery residency at the University of Virginia Medical Center in Charlottesville. He returned to Texas as a Harrington Fellow in Pediatric Orthopaedics and Scoliosis at TSRH in Dallas in 1981-1982 (the fellowship had no relationship to Dr. Paul R. Harrington).

Dr. Johnston is currently Professor in the Department of Orthopaedic Surgery at the University of Texas Southwestern Medical Center at Dallas and continues as a volunteer orthopaedic staff and researcher at TSRH. He is an elite reviewer for the Journal of Bone and Joint Surgery and the Journal of Children’s Orthopaedics. He is a fellow in the American Academy of Orthopaedic
Surgeons and serves on two committees and is a former member of the executive committee of the Pediatric Spine Study Group and Foundation.

Currently, in emeritus status, he has been a member of the Scoliosis Research Society since 1987 and delivered the 2021 Harrington lecture on “The Search for Biologic Treatments Addressing Etiology of Scoliosis.” As a member of the Pediatric Orthopaedic Society of North America since 1986, he has served on multiple committees and received its Humanitarian Award in 2020, based on his multiple medical mission/teaching trips to Palestine, Jordan, Honduras, and Guatemala beginning in the 1990s. He
was elected to the POSNA Hall of Fame in 2022. He also is a member of the European Paediatric Orthopaedic Society and the Texas Orthopaedic Association.

Dr. Johnston has published over 160 papers in peer-reviewed journals and authored approximately 30 book chapters. He has been an invited faculty or visiting professor at national and international institutions on over 60 occasions. 

Coleen Sabatini, MD, MPH

Coleen Sabatini, MD, MPH, is a pediatric orthopaedic surgeon at the University of California San Francisco Benioff Children’s Hospital Oakland, CA, with a practice emphasis on trauma and clubfoot/foot deformities. Dr. Sabatini’s research and advocacy efforts focus on improving access to, and quality of, musculoskeletal care for children, particularly for those in lower-resource settings.

Although she has had the privilege to teach and/or work in different countries, including Nepal, India, the Philippines, and the Dominican Republic, her international work has primarily been based in Uganda, where she has been working since her first trip there (with Dr. Norgrove Penny) in 2013. In 2015, she started a research program to study neglected surgical conditions and to help build musculoskeletal research capacity in the country. One major focus of her research has been on musculoskeletal disabilities related to intramuscular injections (often for treatment of malaria) that affect thousands of children in Uganda. Recognizing that a few short trips a year were not sufficient to achieve meaningful collaboration and impact, in 2019, she began to spend approximately 4 months a year working in Uganda. Recently, with others from POSNA, Dr. Sabatini was a lead faculty for a COEDN-sponsored pediatric orthopaedic COSECSA fellowship based at CoRSU Hospital. She organized weekly online educational conferences during COVID restrictions. Currently, with colleagues in Uganda, she is doing sustainability planning to ensure an ongoing fellowship and expansion of pediatric orthopaedic education in the country while also continuing her long-standing research and advocacy work.

Dr. Sabatini previously served on the COUR (now POGO) Committee of POSNA, including 3 years as Chair. She is a Co-Director of the UCSF Institute of Global Orthopaedics and Traumatology (IGOT) and Associate Director of the UCSF Center for Health Equity in Surgery and Anesthesia (CHESA) and is involved in numerous education, advocacy, and research efforts focused on global surgery/health equity through these entities.

Carter Clement, MD, MBA

Carter Clement, MD, MBA, is a pediatric orthopaedic surgeon at Children’s Hospital of New Orleans and associate professor of orthopaedics at LSU. He trained at Penn, UNC, and Rady Children’s Hospital before returning to his hometown to practice. He specializes in spine deformity, hip preservation, and complex foot deformity.

Dr. Clement has been a POSNA member for 5 years and is an enthusiastic member of the PEMR and POGO Committees. He is passionate about international medical work and has spent time abroad volunteering in numerous countries. He is also very engaged in education, including serving as associate program director for LSU’s orthopaedic surgery residency and as chair of the Education Committee in the division of pediatric orthopaedics. He has won multiple teaching awards in these roles.

Whenever possible, he enjoys spending time with his three young children (especially practicing for Little League and watching Mardi Gras parades) and exploring the New Orleans restaurant scene with his wife, Meredith.