title: First metatarsophalangeal joint reaction forces during high-heel gait.
abstract: First metatarsophalangeal (MTP) joint reaction forces were calculated for 11 normal females during the toe-off phase of gait while walking in bare feet and in high heeled shoes. A biomechanical model was used to calculate the forces utilizing kinematic, kinetic, footprint, and radiographic data. The results showed that the MTP joint reaction forces (FJ), the metatarsal-sesamoid forces (FS), and the resultant of these forces (FRES), were twice as large in high heels compared to barefoot walking. The average peak forces for barefoot and high-heeled gait were FJ: 0.8 and 1.58 times body weight, FS: 0.44 and 1.03 times body weight, and FRES: 0.93 and 1.88 times body weight. Also, the kinematics changed when wearing high heels, making angles of application of forces and sesamoidal articulations less favorable.
authors.affiliation: Clinical Mechanics Group, Kingston General Hospital, Canada.
authors.forename: I D
authors.initials: ID
authors.lastname: McBride
authors.forename: U P
authors.initials: UP
authors.lastname: Wyss
authors.forename: T D
authors.initials: TD
authors.lastname: Cooke
authors.forename: L
authors.initials: L
authors.lastname: Murphy
authors.forename: J
authors.initials: J
authors.lastname: Phillips
authors.forename: S J
authors.initials: SJ
authors.lastname: Olney
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D001835:Body Weight; D005260:Female; D005528:Foot / Q000502:physiology; D005684:Gait; D006801:Humans; D008683:Metatarsophalangeal Joint / Q000502:physiology*; D008954:Models, Biological; D011312:Pressure; D012716:Sesamoid Bones / Q000502:physiology; D012737:Sex Factors; D012775:Shoes