title: Combined Posterior and Anterior Ankle Arthroscopy for Posterior and Anterior Ankle Impingement Syndrome in a Switching Position.
authors.affiliation: Sports Medicine Service, Beijing Jishuitan Hospital, Beijing, China drwangxs@hotmail.com.
authors.forename: Xuesong
authors.initials: X
authors.lastname: Wang
authors.affiliation: Department of Orthopedics, Beijing Second Hospital, Beijing, China.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: Sports Medicine Service, Beijing Jishuitan Hospital, Beijing, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.affiliation: Sports Medicine Service, Beijing Jishuitan Hospital, Beijing, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Sports Medicine Service, Beijing Jishuitan Hospital, Beijing, China.
authors.forename: Jiewei
authors.initials: J
authors.lastname: Shen
keywords: ankle arthroscopy; ankle impingement syndrome; rapid switching position