The design of a motion control system for a powered reciprocating gait orthosis is considered. Models for the orthosis are obtained using least squares identification. The control system design is based on pole-placement techniques and a restricted Youla parametrization of the controller. Experimental results are included.

introduction: functional ankle instability has described as a “feeling of giving way”. balance control deficit is one of the sensorimotor impairments observed in people with functional ankle instability that has been described to damage to the afferent receptors within the ligaments and joint capsule that affected during sprain. foot orthosis can improve balance control via enhanced sensory aff...

OBJECTIVE To examine, for polio survivors, whether walking with a carbon-fibre reinforced plastic knee-ankle-foot orthosis (carbon KAFO) is more efficient than walking with an ordinary KAFO or without an orthosis. DESIGN Consecutive sample. SETTING Post-polio clinic, University Hospital of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan. PARTICIPANTS Eleven polio survivo...

A dental orthosis, designed to increase the size of the upper airway by advancing the mandible, was used in 68 patients to treat snoring and varying degrees of obstructive sleep apnea. The orthosis increased the posterior airway space, as assessed by lateral cephalograms. Seven months (range 2 to 25) after beginning use, 75 percent of patients were using the orthosis regularly. Snoring, by repo...

Toe-in gait and crouch gait can make children with mild cerebral palsy fall and suffer improper balance during walking or ambulation training. A customized external strap orthosis for correcting leg alignment was used to resolve this problem. The purpose of this study was to research the immediate effects while wearing the customized external strap orthosis. Pressure platform was used to assess...

Several cervical spine braces and orthoses were evaluated for their compatibility with imaging in the MR scanner. Nine such devices were investigated: EXO cervical collar, Philadelphia collar, S.O.M.I. cervical orthosis, Guilford cervical orthosis, modified Guilford cervical orthosis, PMT halo cervical orthosis, modified PMT halo cervical orthosis, Bremer halo system, and Bremer MR-compatible h...

BACKGROUND In post-stroke hemiparetic subjects, solid polypropylene ankle-foot-orthoses are commonly prescribed to assist in foot clearance during swing while bracing the ankle during stance. Mobility demands, such as changing walking speed and direction, are accomplished by accelerating or decelerating the body and maintaining dynamic balance. Previous studies have shown that the ankle plantar...

OBJECTIVE To compare walking energy cost between an anterior and a posterior ankle-foot orthosis in people with foot drop. DESIGN Within-group comparisons. PARTICIPANTS Twenty-three adults (14 women, 9 men; mean age 56.8 years (standard deviation 15.4)) with foot drop. METHODS PARTICIPANTS were asked to walk for 5 min at their self-selected walking speed under 3 conditions: (i) with shoes...

Dear Editor, Low back pain (LBP) is one of the common disabling conditions experienced by individuals through the world and the lifetime prevalence of LBP was reported about 84%. A type of LBP which occurs in the absence of an identifiable cause, is called non-specific LBP. Non-specific LBP is managed conservatively by physical therapy and in many cases by applying orthosis. A wide variety of o...

Background: Breast implant displacement or rupture can cause aesthetic problems and serious medical complications. Activities with prone positioning and loading of the anterior chest wall, such as massage, chiropractic or osteopathic therapies may increase the risk of implant failure and can also cause discomfort in women with natural breast tissue. Here we test the effectiveness of a newly dev...