Miao Xudong, MD, Chief physician, Deputy director of Orthopedics Department, Zhejiang University Second Hospital, Head of Foot and Ankle Surgery. Deputy director of the Foot and Ankle Work Committee of the Sports Medicine Branch of the Chinese Medical Association, Vice chairman of the Foot and Ankle Basic and Orthopedic Surgery Subgroup of the Chinese Medical Association Orthopedic Branch, member of the Foot and Ankle Surgery Subgroup of the Orthopedic Branch of the Chinese Medical Association, executive committee member of the Orthopedic Branch of the Medical Health Promotion Association of China, Vice chairman of the Foot and Ankle Surgery Subgroup, chairman of the Zhejiang Foot and Ankle Subgroup, member of the Foot and Ankle Subgroup of the Orthopedic Branch of the Chinese Medical Association, Vice chairman of the Foot and Ankle Subgroup of the Chinese Medical Association and Vice chairman of the Foot and Ankle Subgroup of the Chinese Medical Association.