The ankle joint is one of the important joints of the human body to maintain the ability to walk. Diseases such as stroke and ankle osteoarthritis could weaken the body's ability to control joints, causing people's gait to be out of balance. Ankle-foot orthoses can assist users with neuro/muscular or ankle injuries to restore their natural gait. Currently, passive ankle-foot orthoses are mostly designed to fix the ankle joint and provide support for walking. With the development of materials, sensing, and control science, semi-active orthoses that release mechanical energy to assist walking when needed and can store the energy generated by body movement in elastic units, as well as active ankle-foot orthoses that use external energy to transmit enhanced torque to the ankle, have received increasing attention. This article reviews the development process of ankle-foot orthoses and proposes that the integration of new ankle-foot orthoses with rehabilitation technologies such as monitoring or myoelectric stimulation will play an important role in reducing the walking energy consumption of patients in the study of human-in-the-loop models and promoting neuro/muscular rehabilitation.
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http://dx.doi.org/10.3390/s22176596 | DOI Listing |
Cureus
December 2024
Department of Rehabilitation, Musashigaoka Hospital, Kumamoto, JPN.
Gait asymmetry in post-stroke patients is an important gait characteristic that is associated with their balance control, inefficiency, and risks of musculoskeletal injury to the non-paretic lower limb and falling. Unfortunately, most stroke patients retain an asymmetrical gait pattern, even though their gait independence and gait speed improve. We describe the clinical course of a subacute stroke patient who achieved a symmetrical gait at discharge after undergoing both gait training with orthoses and robot-assisted gait training from the early intervention phase.
View Article and Find Full Text PDFBioengineering (Basel)
December 2024
Department of Rehabilitation Medicine, School of Medicine, Fujita Health University, Toyoake 470-1192, Japan.
This study investigated the effects of ankle dorsiflexion angle adjustments in ankle-foot orthoses (AFOs) on the gait of healthy individuals. Fifteen healthy participants engaged in treadmill walking tasks while wearing AFOs with dorsiflexion angles set at 0°, 5°, 10°, and 15°. Three-dimensional treadmill gait analysis was used to collect data during treadmill walking.
View Article and Find Full Text PDFProsthet Orthot Int
January 2025
School of Rehabilitation Science, McMaster University, Hamilton, Canada.
Background: An important part of the orthotic treatment process includes performing adjustments to the shape or design of the orthosis to improve its fit and function. However, the ability to adjust 3D printed (3DP) materials is not well understood.
Objectives: (1) To evaluate the usability of completing adjustments on 3DP ankle foot orthoses (AFOs) vs.
Clin Biomech (Bristol)
December 2024
Amsterdam UMC location University of Amsterdam, Rehabilitation Medicine, Meibergdreef 9, Amsterdam, the Netherlands; Amsterdam Movement Sciences, Rehabilitation and Development, Amsterdam, the Netherlands. Electronic address:
Background: Clinical decisions regarding ankle-foot-orthosis stiffness in people with calf muscle weakness are based on immediate evaluations, not taking gait adaptation into account. This study examined adaptation of step length, walking speed and energy cost of walking in the 3-months post-provision and whether individuals with higher gait variability adapt more compared to individuals with lower gait variability.
Methods: We conducted a post-hoc analysis in eighteen stiffness-optimized ankle-foot-orthosis users with bilateral calf muscle weakness.
Biosensors (Basel)
December 2024
Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China.
Ankle-foot orthoses (AFOs) have been commonly prescribed for stroke survivors with foot drop, but their impact on the contractions of paretic tibialis anterior (TA) and medial gastrocnemius (MG) has remained inconclusive. This study thus investigated the effect of AFOs on these muscle contractions in stroke survivors. The contractions of paretic TA and MG muscles were assessed in twenty stroke patients and compared between walking with and without AFOs, using a novel wearable dynamic ultrasound imaging and sensing system.
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