An experimental apparatus to simulate body-powered prosthetic usage: Development and preliminary evaluation

2015 ◽  
Vol 40 (3) ◽  
pp. 404-408
Author(s):  
Fan Gao ◽  
Johanan Rodriguez ◽  
Susan Kapp
Keyword(s):  
Quantitative Evaluation ◽  
Upper Limb ◽  
The Body ◽  
Preliminary Evaluation ◽  
Cable Tension ◽  
Experimental Apparatus ◽  
Quantitative Examination ◽  
Powered Prosthesis ◽  
Fitting In ◽  
Device Operation

Background and aim:Harness fitting in the body-powered prosthesis remains more art than science due to a lack of consistent and quantitative evaluation. The aim of this study was to develop a mechanical, human-body-shaped apparatus to simulate body-powered upper limb prosthetic usage and evaluate its capability of quantitative examination of harness configuration.Technique:The apparatus was built upon a torso of a wooden mannequin and integrated major mechanical joints to simulate terminal device operation. Sensors were used to register cable tension, cable excursion, and grip force simultaneously.Discussion:The apparatus allowed the scapula to move up to 127 mm laterally and the load cell can measure the cable tension up to 445 N. Our preliminary evaluation highlighted the needs and importance of investigating harness configurations in a systematic and controllable manner.Clinical relevance:The apparatus allows objective, systematic, and quantitative evaluation of effects of realistic harness configurations and will provide insightful and working knowledge on harness fitting in upper limb amputees using body-powered prosthesis.

scholarly journals Prosthetic Use in Adult Upper Limb Amputees: A Comparison of the Body Powered and Electrically Powered Prostheses

1986 ◽  
Vol 10 (1) ◽  
pp. 27-34 ◽  
Author(s):  
S. G. Millstein ◽  
H. Heger ◽  
G. A. Hunter
Keyword(s):  
Upper Limb ◽  
The Body ◽  
Workers Compensation ◽  
Upper Limb Prosthesis ◽  
Powered Prosthesis ◽  
High Level ◽  
Limb Prosthesis

Three hundred and fourteen adult upper limb amputees were reviewed retrospectively at the Ontario Workers' Compensation Board. A questionnaire was used to evaluate the use of body and electrically powered prostheses. Follow-up ranged from 1 to 49 years with a mean of 15 years. Results indicated that complete or useful acceptance of an electrically powered prosthesis was reported by 69 of 83 amputees (83%); 199 of 291 amputees (68%) used the cable operated hook, 57 of 291 (20%) used the cable operated hand and 40 of 83 (48%) used the cosmetic prosthesis. The majority of amputees used more than one prosthesis for their functional needs and should be fitted with more than one type of prosthesis. Acceptance of an upper limb prosthesis by 89% (196/220) of below-elbow, 76% (56/74) of above-elbow and 60% (12/20) of high level amputees indicates that for most upper limb amputees, their prostheses are well used and essential to their personal and employment activities.

Study on Pramana Shareera in relation to Prakriti

2016 ◽  
Vol 2 (3) ◽  
Author(s):  
Rajendra Pai N. ◽  
U. Govindaraju
Keyword(s):  
Observational Study ◽  
Upper Limb ◽  
Lower Limb ◽  
Characteristic Property ◽  
The Body ◽  
Artificial Limbs ◽  
Body Parts ◽  
Unit Of Measurement ◽  
The Individual ◽  
Different Parts

Ayurveda in its principle has given importance to individualistic approach rather than generalize. Application of this examination can be clearly seem like even though two patients suffering from same disease, the treatment modality may change depending upon the results of Dashvidha Pariksha. Prakruti and Pramana both used in Dashvidha Pariksha. Both determine the health of the individual and Bala (strength) of Rogi (Patient). Ayurveda followed Swa-angula Pramana as the unit of measurement for measuring the different parts of the body which is prime step assessing patient before treatment. Sushruta and Charaka had stated different Angula Pramana of each Pratyanga (body parts). Specificity is the characteristic property of Swa-angula Pramana. This can be applicable in present era for example artificial limbs. A scientific research includes collection, compilation, analysis and lastly scrutiny of entire findings to arrive at a conclusion. Study of Pramana and its relation with Prakruti was conducted in 1000 volunteers using Prakruti Parkishan proforma with an objective of evaluation of Anguli Pramana in various Prakriti. It was observed co-relating Pramana in each Prakruti and Granthokta Pramana that there is no vast difference in measurement of head, upper limb and lower limb. The observational study shows closer relation of features with classical texts.

scholarly journals Making the choice between bioelectrical impedance measures for body hydration status assessment

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dmitry M. Davydov ◽  
Andrey Boev ◽  
Stas Gorbunov
Keyword(s):  
Body Schema ◽  
Bioelectrical Impedance ◽  
Information Criterion ◽  
The Body ◽  
Whole Body ◽  
Hydration Status ◽  
Status Assessment ◽  
Best Fitting ◽  
Body Compartments ◽  
Fitting In

AbstractSituational or persistent body fluid deficit (i.e., de- or hypo-hydration) is considered a significant health risk factor. Bioimpedance analysis (BIA) has been suggested as an alternative to less reliable subjective and biochemical indicators of hydration status. The present study aimed to compare various BIA models in the prediction of direct measures of body compartments associated with hydration/osmolality. Fish (n = 20) was selected as a biological model for physicochemically measuring proximate body compartments associated with hydration such as water, dissolved proteins, and non-osseous minerals as the references or criterion points. Whole-body and segmental/local impedance measures were used to investigate a pool of BIA models, which were compared by Akaike Information Criterion in their ability to accurately predict the body components. Statistical models showed that ‘volumetric-based’ BIA measures obtained in parallel, such as distance2/Rp, could be the best approach in predicting percent of body moisture, proteins, and minerals in the whole-body schema. However, serially-obtained BIA measures, such as the ratio of the reactance to resistance and the resistance adjusted for distance between electrodes, were the best fitting in predicting the compartments in the segmental schema. Validity of these results should be confirmed on humans before implementation in practice.

scholarly journals Co-relation of functional mobility with anxiety in traumatic below knee amputees

2021 ◽  
Vol 9 (5) ◽  
pp. 4013-4018
Author(s):  
Lavanya R Ayyer ◽  
◽  
Asmita C Moharkar ◽  
Keyword(s):  
Upper Limb ◽  
Lower Limb ◽  
Holistic Approach ◽  
The Body ◽  
Functional Mobility ◽  
Mental Wellbeing ◽  
Limb Amputation ◽  
Surgical Removal ◽  
Institutional Ethics ◽  
Restricted Mobility

Background: Amputation is defined as the surgical removal of one or more parts of the body. It causes great stress to the physical and mental wellbeing of an individual. The incidence of lower limb amputation is greater as compared to upper limb amputation. Also lower limb amputees experience more restricted mobility than upper limb amputee patients. Rehabilitation is an important to the recovery of an amputee. In cases of planned amputation, rehabilitation starts before the surgery. It involves physiotherapy, occupational therapy and recreational training. There is little to no studies on the co-relation of anxiety with functional mobility in amputees. This study focusses on the same. Context and purpose: Amputation causes restricted mobility and decreased quality of life. A study on the relation between anxiety and mobility will indicate a different outlook of a holistic approach while treating mobility issues in below knee amputees. Materials and methods: This is a one group co-relational study design. Study was conducted after taking approval from the institutional ethics committee and all the subjects gave their written informed consent. The study was conducted at Yashwantrao Chavan Memorial Hospital, Pune. Result: Statistical analysis of the data was done using the Pearson’s co-relation co-efficient and a co-relation was found between anxiety and functional mobility in below knee amputee patients. Conclusion: There is a co-relation between functional mobility and anxiety. Patients with anxiety showed a reduced performance on the functional mobility scale than the patients without anxiety. KEY WORDS: Amputation, Anxiety, below knee amputation, functional mobility, rehabilitation.

scholarly journals At the Southeastern end of Schengen

2018 ◽  
Vol 30 (4) ◽  
pp. 61-82
Author(s):  
Terézia Nagy
Keyword(s):  
Public Discourse ◽  
The Body ◽  
Host Society ◽  
The Public ◽  
Hungarian Society ◽  
The Press ◽  
Transnational Communication ◽  
Fitting In ◽  
The Eu

In my study I would like to show how the refugees’ situation, motivation and lifestyle have been criminalized in the public discourse (political, press and social public discourse) despite the fact that the Hungarian asylum procedures seem to be converging to the EU standards. I will approach the acceptance of and behaviour towards refugees in two ways: based on my experience from fieldwork carried out in diasporas in Budapest and based on my analysis of the press from the perspective of the host society. These approaches are important because my results show that socio-cultural acceptance is demonstrated almost exclusively by the diasporas even though the economic and official procedures manifest in the body of the host (Hungarian) society. I would also like to speak about the picture the Hungarian media and the government’s discourse show of people crossing the border illegally, how it raises fear and uncertainty among them. This kind of influence conveys messages which hinder fitting in in various aspects, obstruct integration, and at the same time make transnational communication among refugees stereotypical and equivocal. Consequently, ethnically or religiously homogeneous connections are getting stronger, while the importance of diasporas with weak economic, political and advocacy background is also increasing. However, the newcomers hardly ever enter the Hungarian scene.

scholarly journals Development of Upper-Limb Assist Suit for Reduction Physical Load in Leaf Photosynthesis Measurement

2020 ◽  
pp. 185-190
Author(s):  
Toshitake Araie ◽  
◽  
Ikeda Tomozumi ◽  
Akira Kakimoto ◽  
Shunsuke Adachi ◽  
...  
Keyword(s):  
High Risk ◽  
Upper Limb ◽  
Photosynthetic Capacity ◽  
Evaluation Methods ◽  
The Body ◽  
Physical Load ◽  
Leaf Photosynthesis ◽  
Measuring Device ◽  
Risk Of Injury ◽  
Work Posture

Agricultural tasks result in significant strain on the arms, thereby necessitating posture support. One such task is measuring the photosynthetic capacity of individual leaves. This task requires the operator to hold a measuring device for long periods, which is physically demanding. This study aims to develop an assist suit to reduce the physical load involved in photosynthesis measurement work. We used work posture evaluation methods to quantify the workload of this task and identified the parts of the body at high-risk of injury. Then, we designed an assist suit based on the required specifications and verified its effectiveness.

scholarly journals Analisis Postur Kerja Operator dengan Metode Rula di Area Gas Cutting

2017 ◽  
Vol 3 (2) ◽  
pp. 73
Author(s):  
Irwan Pegiardi ◽  
Firdanis Setyaning Handika ◽  
Supriyadi Supriyadi
Keyword(s):  
Upper Limb ◽  
Research Method ◽  
The Body ◽  
Sitting Position ◽  
Upper Limbs ◽  
Work Posture ◽  
Long Time ◽  
Group A ◽  
Group B

The gas cutting area has several jobs that are risky to the operator, such as activities with squatting, bending positions. This study aims to determine the risk of work in the gas cutting area as a basis for improving work posture. The method used is RULA (Rapid Upper Limb Assessment) is a research method for investigating disorders of the upper limbs. By measuring the group A score and group B score. Based on the results of the RULA value in the process of operating the machine with a sitting position with a score 3. clearing the cutting plate with a bent position with a score of 5, and the highest score 6 in the grinding plate cutting. To reduce pain in the neck, torso, and arms, operators should not do work postures that cause pain in the body for a long time.

scholarly journals Acoustic information about upper limb movement in voicing

2020 ◽  
Vol 117 (21) ◽  
pp. 11364-11367 ◽  
Author(s):  
Wim Pouw ◽  
Alexandra Paxton ◽  
Steven J. Harrison ◽  
James A. Dixon
Keyword(s):  
Steady State ◽  
Upper Limb ◽  
Arm Movement ◽  
Limb Movement ◽  
Interpersonal Perception ◽  
The Body ◽  
Acoustic Information ◽  
Human Voice ◽  
Vocal System ◽  
The Voice

We show that the human voice has complex acoustic qualities that are directly coupled to peripheral musculoskeletal tensioning of the body, such as subtle wrist movements. In this study, human vocalizers produced a steady-state vocalization while rhythmically moving the wrist or the arm at different tempos. Although listeners could only hear and not see the vocalizer, they were able to completely synchronize their own rhythmic wrist or arm movement with the movement of the vocalizer which they perceived in the voice acoustics. This study corroborates recent evidence suggesting that the human voice is constrained by bodily tensioning affecting the respiratory–vocal system. The current results show that the human voice contains a bodily imprint that is directly informative for the interpersonal perception of another’s dynamic physical states.

Wearable sensing devices for upper limbs: A systematic review

2020 ◽  
Vol 235 (1) ◽  
pp. 117-130
Author(s):  
Mingjie Dong ◽  
Bin Fang ◽  
Jianfeng Li ◽  
Fuchun Sun ◽  
Huaping Liu
Keyword(s):  
Upper Limb ◽  
State Of The Art ◽  
Electronic Devices ◽  
The Body ◽  
Future Research ◽  
Upper Limbs ◽  
Advantages And Disadvantages ◽  
Wearable Sensing ◽  
Fast Development ◽  
Manufacturing Technologies

Wearable sensing devices, which are smart electronic devices that can be worn on the body as implants or accessories, have attracted much research interest in recent years. They are rapidly advancing in terms of technology, functionality, size, and real-time applications along with the fast development of manufacturing technologies and sensor technologies. By covering some of the most important technologies and algorithms of wearable devices, this paper is intended to provide an overview of upper-limb wearable device research and to explore future research trends. The review of the state-of-the-art of upper-limb wearable technologies involving wearable design, sensor technologies, wearable computing algorithms and wearable applications is presented along with a summary of their advantages and disadvantages. Toward the end of this paper, we highlight areas of future research potential. It is our goal that this review will guide future researchers to develop better wearable sensing devices for upper limbs.

The Application of Eddy-Viscosity Stress Limiters for Modeling Cross-Flow Separation

2010 ◽  
Vol 132 (9) ◽  
Author(s):  
P. A. Gregory ◽  
P. N. Joubert ◽  
M. S. Chong ◽  
A. Ooi
Keyword(s):  
Kinetic Energy ◽  
Skin Friction ◽  
Turbulent Kinetic Energy ◽  
Flow Separation ◽  
Eddy Viscosity ◽  
Cross Flow ◽  
The Body ◽  
Mean Flow ◽  
Viscosity Models ◽  
Experimental Apparatus

The ability of eddy-viscosity models to simulate the turbulent wake produced by cross-flow separation over a curved body of revolution is assessed. The results obtained using the standard k−ω model show excessive levels of turbulent kinetic energy k in the vicinity of the stagnation point at the nose of the body. Additionally, high levels of k are observed throughout the wake. Enforcing laminar flow upstream of the nose (which replicates the experimental apparatus more accurately) gives more accurate estimates of k throughout the flowfield. A stress limiter in the form of Durbin’s T-limit modification for eddy-viscosity models is implemented for the k−ω model, and its effect on the computed surface pressures, skin friction, and surface flow features is assessed. Additionally, the effect of the T-limit modification on both the mean flow and the turbulent flow quantities within the wake is also examined. The use of the T-limit modification gives significant improvements in predicted levels of turbulent kinetic energy and Reynolds stresses within the wake. However, predicted values of skin friction in regions of attached flow become up to 50% greater than the experimental values when the T-limit is used. This is due to higher values of near-wall turbulence being created with the T-limit.

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