Beat Hintermann is an Associate Professor at the University of Basel. After his residency program, he completed a research fellowship in Biomechanics at the University of Calgary, Canada, and two fellowships: one in Asia and one in the USA and the United Kingdom. After being the head of the Division of Orthopaedic Trauma at the University Hospital in Basel for 13 years, he served from 2006 to 2019 as the chairman of the Clinic for Orthopaedics and Traumatology at Kantonsspital Baselland, Switzerland. In 2019, he founded the Center of Excellence for Foot and Ankle Surgery, which he has since chaired. During his tenure, new and innovative techniques and procedures have been introduced, such as correcting osteotomies of deformities, arthrodeses of the hindfoot complex and total ankle replacement. He conceived the H3 ankle and was a co-conceptor of the H2 ankle. He is the author of over 275 peer-reviewed articles and 5 medical textbooks on reconstructive surgery of theankle and hindfoot complex. He has received numerous awards for his clinical and biomechanical research. In 2017, he was appointed a Visiting Professor at Ruijin University of Shanghai, China. He is regularly a faculty member at international foot and ankle meetings and an organizer of practical instructional courses in Switzerland and abroad.
Roxa Ruiz is a senior attending surgeon at the Center of Excellence for Foot and Ankle Surgery at Kantonsspital Baselland (Switzerland), also serving as its Medical Director. She gained her medical degree and specialized in orthopedic trauma at the University in Lima, Peru. In 1998, she joined the Central Military Hospital of Lima, first as a senior resident; after that, as a senior attending surgeon, she served as the Head of the War Service Unit, one of the two units in the Orthopaedic Trauma Department there. In 2003, she made a fellowship at the Institute of Foot and Ankle at the Harborview Medical Center in Seattle, USA;in 2008, she had a fellowship in Baltimore, USA. In 2011, she spent at the Kantonsspital Liestal. At the same time, she founded the Chapter for Foot and Ankle Surgery in the Peruvian Orthopaedic and Trauma Society, for which she also served as the founding and first president. In 2014, she became a Guest Professor at Lima's Mayor University of San Marcos Postgrad Unit. She is regularly a faculty member at international foot and ankle meetings. She is the author of numerous scientific papers and book chapters, co-author of two textbooks, and co-conceptor of the H2 ankle prosthesis.