title: Interdependency of the maximum range of flexion-extension of hand metacarpophalangeal joints.
abstract: Mobility of the fingers metacarpophalangeal (MCP) joints depends on the posture of the adjacent ones. Current Biomechanical hand models consider fixed ranges of movement at joints, regardless of the posture, thus allowing for non-realistic postures, generating wrong results in reach studies and forward dynamic analyses. This study provides data for more realistic hand models. The maximum voluntary extension (MVE) and flexion (MVF) of different combinations of MCP joints were measured covering their range of motion. Dependency of the MVF and MVE on the posture of the adjacent MCP joints was confirmed and mathematical models obtained through regression analyses (RMSE 7.7°).
authors.affiliation: a Departamento de Ingeniería Mecánica y Construcción , Universitat Jaume I , Castelló , Spain.
authors.forename: V
authors.initials: V
authors.lastname: Gracia-Ibáñez
authors.affiliation: a Departamento de Ingeniería Mecánica y Construcción , Universitat Jaume I , Castelló , Spain.
authors.forename: M
authors.initials: M
authors.lastname: Vergara
authors.affiliation: a Departamento de Ingeniería Mecánica y Construcción , Universitat Jaume I , Castelló , Spain.
authors.forename: J-L
authors.initials: JL
authors.lastname: Sancho-Bru
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D005260:Female; D005385:Fingers / Q000502:physiology; D006225:Hand / Q000502:physiology*; D006801:Humans; D008297:Male; D008662:Metacarpophalangeal Joint / Q000502:physiology*; D008875:Middle Aged; D009068:Movement; D011187:Posture / Q000502:physiology; D016059:Range of Motion, Articular / Q000502:physiology*
keywords: Interdependent limits; finger metacarpophalangeal joint; hand biomechanical models; range of movement