Sensor-guided gait synchronization for weight-support lower-extremity-exoskeleton

Author(s):  
Donghai Wang ◽  
Kok-Meng Lee
2014 ◽  
Vol 664 ◽  
pp. 423-428
Author(s):  
Mauricio Plaza Torres ◽  
William Aperador

Hip disarticulation is an amputation through the hip joint capsule, removing the entire lower extremity, with closure of the remaining musculature over the exposed acetabulum. Tumors of the distal and proximal femur were treated by total femur resection; a hip disarticulation sometimes is performance for massive trauma with crush injuries to the lower extremity. This article discusses the design a system for rehabilitation of a patient with bilateral hip disarticulations. The prosthetics designed allowed the patient to do natural gait suspended between parallel articulate crutches with the body weight support between the crutches. The care of this patient was a challenge due to bilateral amputations at such a high level and the special needs of a patient mobility.


2018 ◽  
Vol 99 (3) ◽  
pp. 258-265
Author(s):  
Carol A Miller ◽  
Dawn M Hayes ◽  
Bailey E Brooks ◽  
Katie Y Sloan ◽  
Phillip G Sloan

2016 ◽  
Vol 32 (4) ◽  
pp. 933-942 ◽  
Author(s):  
Donghai Wang ◽  
Kok-Meng Lee ◽  
Jingjing Ji

2008 ◽  
Vol 88 (4) ◽  
pp. 511-522 ◽  
Author(s):  
Ellen W Miller ◽  
Stephanie A Combs ◽  
Caryn Fish ◽  
Brooke Bense ◽  
Amanda Owens ◽  
...  

Background and PurposeAlthough many people who have had a stroke are primarily interested in learning to walk, some are able to focus on a return to recreational and sporting activities. This study was carried out to investigate the feasibility and effectiveness of the use of intensive task-oriented training in the body-weight–support/treadmill environment to improve running for a subject after stroke.SubjectThe subject was a 38-year-old man who had a stroke 2.5 years previously.MethodsA single-subject design with baseline, intervention, immediate postintervention, and 6-month postintervention phases was conducted. Dependent variables included 25-m sprint time, single-leg balance, running step width, running step length ratio, Stroke Impact Scale, 6-minute walk test, and lower-extremity strength (force-generating capacity).ResultsAt the 6-month postintervention phase, sprint speed, left single-leg balance, and step width changed significantly from the baseline phase. Step length ratio trended toward less symmetry but more consistency, and muscle strength improved more than 20% in 6 of 8 muscle groups in the involved lower extremity and 4 of 8 muscle groups in the uninvolved lower extremity.Discussion and ConclusionIntensive task-specific training was feasible and effective for retraining running ability in the study subject. He returned to recreational running, which provided him with a greatly improved outlook and a better quality of life.


2002 ◽  
Vol 7 (2) ◽  
pp. 1-4, 12 ◽  
Author(s):  
Christopher R. Brigham

Abstract To account for the effects of multiple impairments, evaluating physicians must provide a summary value that combines multiple impairments so the whole person impairment is equal to or less than the sum of all the individual impairment values. A common error is to add values that should be combined and typically results in an inflated rating. The Combined Values Chart in the AMA Guides to the Evaluation of Permanent Impairment, Fifth Edition, includes instructions that guide physicians about combining impairment ratings. For example, impairment values within a region generally are combined and converted to a whole person permanent impairment before combination with the results from other regions (exceptions include certain impairments of the spine and extremities). When they combine three or more values, physicians should select and combine the two lowest values; this value is combined with the third value to yield the total value. Upper extremity impairment ratings are combined based on the principle that a second and each succeeding impairment applies not to the whole unit (eg, whole finger) but only to the part that remains (eg, proximal phalanx). Physicians who combine lower extremity impairments usually use only one evaluation method, but, if more than one method is used, the physician should use the Combined Values Chart.


2000 ◽  
Vol 5 (3) ◽  
pp. 4-4

Abstract Lesions of the peripheral nervous system (PNS), whether due to injury or illness, commonly result in residual symptoms and signs and, hence, permanent impairment. The AMA Guides to the Evaluation of Permanent Impairment (AMA Guides), Fourth Edition, divides PNS deficits into sensory and motor and includes pain in the former. This article, which regards rating sensory and motor deficits of the lower extremities, is continued from the March/April 2000 issue of The Guides Newsletter. Procedures for rating extremity neural deficits are described in Chapter 3, The Musculoskeletal System, section 3.1k for the upper extremity and sections 3.2k and 3.2l for the lower limb. Sensory deficits and dysesthesia are both disorders of sensation, but the former can be interpreted to mean diminished or absent sensation (hypesthesia or anesthesia) Dysesthesia implies abnormal sensation in the absence of a stimulus or unpleasant sensation elicited by normal touch. Sections 3.2k and 3.2d indicate that almost all partial motor loss in the lower extremity can be rated using Table 39. In addition, Section 4.4b and Table 21 indicate the multistep method used for spinal and some additional nerves and be used alternatively to rate lower extremity weakness in general. Partial motor loss in the lower extremity is rated by manual muscle testing, which is described in the AMA Guides in Section 3.2d.


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