title: Orthoses posted in both the forefoot and rearfoot reduce moments and angular impulses on lower extremity joints during walking.
abstract: The purpose of the present study was to determine the effects of orthoses designed to support the forefoot and rearfoot on the kinematics and kinetics of the lower extremity joints during walking. Fifteen participants volunteered for this study. Kinematic and kinetic variables during overground walking were compared with the participants wearing sandals without orthoses or sandals with orthoses. Orthoses increased knee internal abduction moment during late stance and knee abduction angular impulse, and reduced the medial ground reaction force during late stance, adduction free moment, forefoot eversion angle, ankle inversion moment and angular impulse, hip adduction angle, hip abduction moment, and hip external rotation moment and angular impulse (p<0.05). Orthoses decreased the torsional forces on the lower extremity and reduced the loading at the hip during walking. These findings combined with our previous studies and those of others suggest that forefoot abnormalities are critically important in influencing lower extremity kinematics and kinetics, and may underlie some non-traumatic lower extremity injuries.
authors: Department of Physical Therapy and Athletic Training, Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, MA, USA. Electronic address: wenhao@bu.edu.
authors: Wen-Hao
authors: WH
authors: Hsu
authors: Department of Physical Therapy and Athletic Training, Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, MA, USA.
authors: Cara L
authors: CL
authors: Lewis
authors: Department of Physical Therapy and Athletic Training, Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, MA, USA.
authors: Gail M
authors: GM
authors: Monaghan
authors: Department of Physical Therapy and Athletic Training, Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, MA, USA.
authors: Elliot
authors: E
authors: Saltzman
authors: Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA.
authors: Joseph
authors: J
authors: Hamill
authors: Department of Physical Therapy and Athletic Training, Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, MA, USA.
authors: Kenneth G
authors: KG
authors: Holt
mesh_terms: D000328:Adult; D000843:Ankle Joint / Q000502:physiology; D001696:Biomechanical Phenomena; D005260:Female; D005528:Foot / Q000502:physiology*; D005545:Forefoot, Human / Q000502:physiology*; D006615:Hip / Q000502:physiology*; D006801:Humans; D007700:Kinetics; D007719:Knee Joint / Q000502:physiology; D008297:Male; D009068:Movement; D009989:Orthotic Devices; D012399:Rotation; D012420:Running; D016138:Walking; D055815:Young Adult
keywords: Custom-made orthoses; Foot varus; Kinematics; Kinetics