Dr. Zgonis is known for his work in foot and ankle reconstruction with circular external fixation. His interests include traumatic foot and ankle injuries, deformity correction, diabetic Charcot reconstruction and soft tissue coverage of the diabetic foot. Currently, he is a Professor in the Department of Orthopaedics within the Division of Podiatric Medicine & Surgery at UTHSCSA. Dr. Zgonis served his surgical residency at the University of Pittsburgh Medical Center and completed an additional year of a reconstructive foot and ankle fellowship at New Britain General Hospital, New Britain, Connecticut, affiliated with the Yale School of Medicine. He also has completed several mini-fellowships on external fixation in Greece and Italy. He is a Fellow of the American College of Foot and Ankle Surgeons and Board Certified in both Foot Surgery and Reconstructive Rearfoot/Ankle Surgery by the American Board of Foot and Ankle Surgery. Dr. Zgonis is a nationally and internationally recognized lecturer in the methods and application of the Ilizarov apparatus for external fixation and also serves as a Consulting Editor for the Clinics in Podiatric Medicine and Surgery . He has authored numerous articles and book chapters in the field of reconstructive and revisional foot and ankle surgery. He is the clinic textbook Editor of the Surgical Reconstruction of the Diabetic Foot and Ankle , Co-Editor of the External Fixators of the Foot and Ankle and the Editor-in-Chief for the open access Diabetic Foot & Ankle journal.