title: An ankle joint model-based image-matching motion analysis technique.
abstract: This study presented a model-based image-matching (MBIM) motion analysis technique for ankle joint kinematic measurement. Five cadaveric below-hip specimens were manipulated through a full range of ankle joint motions in bare-foot and shoed conditions. The ankle motions were analyzed by bone-pin marker-based motion analysis and MBIM motion analysis techniques respectively. The root mean square errors of all angles of motion were less than 3°. The average Intraclass Correlation Coefficients (ICCs) for the intra-rater reliability were greater than 0.928 and the average ICCs for the inter-rater reliability were greater than 0.948 for all angles of motion. Excellent validity, intra-rater reliability and inter-rater reliability were achieved for the MBIM technique in both bare-foot and shoed conditions. The MBIM technique can therefore provide good estimates of ankle joint kinematics.
authors.affiliation: Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China; The Hong Kong Jockey Club Sports Medicine and Health Sciences Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China. kmmok@ort.cuhk.edu.hk
authors.forename: Kam-Ming
authors.initials: KM
authors.lastname: Mok
authors.forename: Daniel Tik-Pui
authors.initials: DT
authors.lastname: Fong
authors.forename: Tron
authors.initials: T
authors.lastname: Krosshaug
authors.forename: Aaron See-Long
authors.initials: AS
authors.lastname: Hung
authors.forename: Patrick Shu-Hang
authors.initials: PS
authors.lastname: Yung
authors.forename: Kai-Ming
authors.initials: KM
authors.lastname: Chan
mesh_terms: D000843:Ankle Joint / Q000502:physiology*; D001696:Biomechanical Phenomena; D002102:Cadaver; D006801:Humans; D016059:Range of Motion, Articular / Q000502:physiology*; D015203:Reproducibility of Results; D012775:Shoes; D014741:Video Recording / Q000295:instrumentation*