Evaluation of new suspension system for limb prosthetics

There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

Abstract

Background

Good prosthetic suspension system secures the residual limb inside the prosthetic socket and enables easy donning and doffing. This study aimed to introduce, evaluate and compare a newly designed prosthetic suspension system (HOLO) with the current suspension systems (suction, pin/lock and magnetic systems).

Methods

All the suspension systems were tested (tensile testing machine) in terms of the degree of the shear strength and the patient’s comfort. Nine transtibial amputees participated in this study. The patients were asked to use four different suspension systems. Afterwards, each participant completed a questionnaire for each system to evaluate their comfort. Furthermore, the systems were compared in terms of the cost.

Results

The maximum tensile load that the new system could bear was 490 N (SD, 5.5) before the system failed. Pin/lock, magnetic and suction suspension systems could tolerate loads of580 N (SD, 8.5), 350.9 (SD, 7) and 310 N (SD, 8.4), respectively. Our subjects were satisfied with the new hook and loop system, particularly in terms of easy donning and doffing. Furthermore, the new system is considerably cheaper (35 times) than the current locking systems in the market.

Conclusions

The new suspension system could successfully retain the prosthesis on the residual limb as a good alternative for lower limb amputees. In addition, the new system addresses some problems of the existing systems and is more cost effective than its counterparts.

Related collections

Most cited references 21

Record: found
Abstract: found
Article: not found

Prosthesis evaluation questionnaire for persons with lower limb amputations: assessing prosthesis-related quality of life.

Marcia Legro, Gayle Reiber, Douglas Smith … (1998)

To develop a self-report questionnaire for persons with lower limb amputations who use a prosthesis. The resulting scales were intended to be suitable to evaluate the prosthesis and life with the prosthesis. The conceptual framework was health-related quality of life. Multiple steps of scale development, terminating with test-retest of the Prosthesis Evaluation Questionnaire (PEQ) by mail. SOURCE OF SAMPLE: Records from two Seattle hospitals. Ninety-two patients with lower limb amputations who varied by age, reason for amputation, years since amputation, and amputation level. The 10 scales used were 4 prosthesis function scales (Usefulness, Residual Limb Health, Appearance, and Sounds), 2 mobility scales (Ambulation and Transfers), 3 psychosocial scales (Perceived Responses, Frustration, and Social Burden), and 1 Well-being scale. Validation measures were the Medical Outcomes Study Short Form-36, the Social Interaction subscale from the Sickness Impact Profile, and the Profile of Mood States-short form. Nine PEQ scales demonstrated high internal consistency. All met test-retest criteria for comparing group results. Validity was described based on methods used to gather original items, distribution of scores, and comparison of scores with criterion variables. The PEQ scales displayed good psychometric properties. Future work will assess responsiveness of PEQ scales to changes in prosthetic components. We conclude that they will be useful in evaluation of prosthetic care.

0 comments Cited 83 times – based on 0 reviews      Review now

Record: found
Abstract: found
Article: not found

Use and satisfaction with prosthetic limb devices and related services.

Paddy Rossbach, L Pezzin, Patti Ephraim … (2004)

To examine the use and satisfaction with prosthetic limb devices and satisfaction with prosthetist services in a large and diverse sample of persons with limb loss. Retrospective cohort study. General community. Persons aged 18 to 84 years identified from the Amputee Coalition of America registry as having a major upper- or lower-limb loss due to vascular disease, trauma, or malignancy. Not applicable. Use and satisfaction with prosthetic limb devices and satisfaction with prosthetists' services, assessed via structured telephone interviews. Most persons (94.5%) surveyed had a prosthesis and used it extensively (71h/wk). Most persons with amputations appeared to be satisfied with the overall performance of their prostheses (75.7%). Nearly one third of them, however, expressed dissatisfaction with their prostheses' comfort. Frequency of prosthesis use and satisfaction with the device were significantly higher among those with shorter timing to first prosthesis fitting, even after controlling for a wide array of respondents' sociodemographic and amputation characteristics. Overall, persons with amputations in our sample had positive assessments of their prosthetists' quality. Less favorable ratings concerned items related to the prosthetists' interpersonal skills. Multivariate analyses showed that men and black persons with amputations were less likely than their female or white counterparts to have favorable perceptions about their prosthetists across all dimensions of provider quality. Persons with fewer years of schooling were also less likely to be satisfied with their prosthetist's interpersonal manner. There were no significant differences in prosthesis use, satisfaction, or assessment of prosthetists' quality based on amputation etiology or amputation level. Efforts should be directed at minimizing the interval from surgery to first prosthesis fitting and at improving communication between patients and prosthetists, to improve the quality of care provided to the growing numbers of persons with limb loss.

0 comments Cited 38 times – based on 0 reviews      Review now

Record: found
Abstract: found
Article: not found

Vacuum-assisted socket suspension compared with pin suspension for lower extremity amputees: effect on fit, activity, and limb volume.

Glenn K Klute, Jocelyn Berge, Wayne Biggs … (2011)

To investigate the effect of a vacuum-assisted socket suspension system as compared with pin suspension on lower extremity amputees. Randomized crossover with 3-week acclimation. Household, community, and laboratory environments. Unilateral, transtibial amputees (N=20 enrolled, N=5 completed). (1) Total surface-bearing socket with a vacuum-assisted suspension system (VASS), and (2) modified patellar tendon-bearing socket with a pin lock suspension system. Activity level, residual limb volume before and after a 30-minute treadmill walk, residual limb pistoning, and Prosthesis Evaluation Questionnaire. Activity levels were significantly lower while wearing the vacuum-assisted socket suspension system than the pin suspension (P=.0056; 38,000 ± 9,000 steps per 2 wk vs 73,000 ± 18,000 steps per 2 wk, respectively). Residual limb pistoning was significantly less while wearing the vacuum-assisted socket suspension system than the pin suspension (P=.0021; 1 ± 3mm vs 6 ± 4mm, respectively). Treadmill walking had no effect on residual limb volume. In general, participants ranked their residual limb health higher, were less frustrated, and claimed it was easier to ambulate while wearing a pin suspension compared with the VASS. The VASS resulted in a better fitting socket as measured by limb movement relative to the prosthetic socket (pistoning), although the clinical relevance of the small but statistically significant difference is difficult to discern. Treadmill walking had no effect, suggesting that a skilled prosthetist can control for daily limb volume fluctuations by using conventional, nonvacuum systems. Participants took approximately half as many steps while wearing the VASS which, when coupled with their subjective responses, suggests a preference for the pin suspension system. Copyright © 2011 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

0 comments Cited 25 times – based on 0 reviews      Review now

All references

Author and article information

Journal

Journal ID (nlm-ta): Biomed Eng Online

Journal ID (iso-abbrev): Biomed Eng Online

Title: BioMedical Engineering OnLine

Publisher: BioMed Central

ISSN (Electronic): 1475-925X

Publication date Collection: 2014

Publication date (Electronic): 10 January 2014

Volume: 13

Page: 1

Affiliations

[1 ]Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia

Article

Publisher ID: 1475-925X-13-1

DOI: 10.1186/1475-925X-13-1

PMC ID: 3898787

PubMed ID: 24410918

SO-VID: 7e072225-eec1-4f24-b755-61bbfb323e7b

License:

This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver ( http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

Evaluation of new suspension system for limb prosthetics

Read this article at

Abstract

Background

Methods

Results

Conclusions

Related collections

Online interactive cancer simulations and demos

Most cited references 21

Prosthesis evaluation questionnaire for persons with lower limb amputations: assessing prosthesis-related quality of life.

Use and satisfaction with prosthetic limb devices and related services.

Vacuum-assisted socket suspension compared with pin suspension for lower extremity amputees: effect on fit, activity, and limb volume.

Author and article information

Journal

Affiliations

Article

History

Categories

Comments

Comment on this article

Similar content 58

Cited by 46

Most referenced authors 120