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https://www.readbyqxmd.com/read/28105951/theoretical-implementation-of-prior-knowledge-in-the-design-of-a-multi-scale-prosthesis-satisfaction-questionnaire
#1
Tim Schürmann, Philipp Beckerle, Julia Preller, Joachim Vogt, Oliver Christ
BACKGROUND: In product development for lower limb prosthetic devices, a set of special criteria needs to be met. Prosthetic devices have a direct impact on the rehabilitation process after an amputation with both perceived technological and psychological aspects playing an important role. However, available psychometric questionnaires fail to consider the important links between these two dimensions. In this article a probabilistic latent trait model is proposed with seven technical and psychological factors which measure satisfaction with the prosthesis...
December 19, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28105949/towards-active-lower-limb-prosthetic-systems-design-issues-and-solutions
#2
EDITORIAL
Oliver Christ, Philipp Beckerle
No abstract text is available yet for this article.
December 19, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28105948/active-lower-limb-prosthetics-a-systematic-review-of-design-issues-and-solutions
#3
REVIEW
Michael Windrich, Martin Grimmer, Oliver Christ, Stephan Rinderknecht, Philipp Beckerle
This paper presents a review on design issues and solutions found in active lower limb prostheses. This review is based on a systematic literature search with a methodical search strategy. The search was carried out across four major technical databases and the retrieved records were screened for their relevance. A total of 21 different active prostheses, including 8 above-knee, 9 below-knee and 4 combined knee-ankle prostheses were identified. While an active prosthesis may help to restore the functional performance of an amputee, the requirements regarding the actuation unit as well as for the control system are high and the development becomes a challenging task...
December 19, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28104752/reduced-prosthetic-stiffness-lowers-the-metabolic-cost-of-running-for-athletes-with-bilateral-transtibial-amputations
#4
Owen N Beck, Paolo Taboga, Alena Marie Grabowski
Inspired by the spring-like action of biological legs, running-specific prostheses are designed to enable athletes with lower-limb amputations to run. Yet, manufacturer recommendations for prosthetic stiffness and height may not optimize running performance. Therefore, we investigated the effects of using different prosthetic configurations on the metabolic cost and biomechanics of running. Five athletes with bilateral transtibial amputations each performed fifteen trials on a force-measuring treadmill at 2...
January 19, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28100097/spina-bifida-and-lower-limb-amputation-in-northern-ireland-a-retrospective-study-of-demographics-and-outcome
#5
Lorraine Graham
BACKGROUND: Spina bifida is an uncommon cause for lower limb amputation. The causes and level of amputation and mobility outcome for these patients have not been reported previously. CASE DESCRIPTION: To identify the causes and level of amputation and the mobility outcome for amputee patients with spina bifida. STUDY DESIGN: Retrospective case series. METHODS: Chart review of patients identified by computer as having an amputation secondary to neurological or congenital cause...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28099454/high-cable-forces-deteriorate-pinch-force-control-in-voluntary-closing-body-powered-prostheses
#6
Mona Hichert, David A Abbink, Peter J Kyberd, Dick H Plettenburg
BACKGROUND: It is generally asserted that reliable and intuitive control of upper-limb prostheses requires adequate feedback of prosthetic finger positions and pinch forces applied to objects. Body-powered prostheses (BPPs) provide the user with direct proprioceptive feedback. Currently available BPPs often require high cable operation forces, which complicates control of the forces at the terminal device. The aim of this study is to quantify the influence of high cable forces on object manipulation with voluntary-closing prostheses...
2017: PloS One
https://www.readbyqxmd.com/read/28098513/attrition-and-retention-in-upper-limb-prosthetics-research-experience-of-the-va-home-study-of-the-deka-arm
#7
Linda Resnik, Shana Klinger
PURPOSE: (1) Describe study attrition; (2) identify reasons for attrition, and (3) discuss implications for prosthetic prescription and design of future device studies. Design and methodological procedures used: Completion phase (during in-laboratory training, after training, or home use) was identified for 42 participants. Qualitative data were analyzed to identify attrition reasons. Reasons were classified as related to the DEKA arm, or not. RESULTS: Study attrition was 57%, with 43% completing the full study...
January 18, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28094689/quantification-of-rectifications-for-the-northwestern-university-flexible-sub-ischial-vacuum-socket
#8
Stefania Fatone, William Brett Johnson, Lilly Tran, Kerice Tucker, Christofer Mowrer, Ryan Caldwell
BACKGROUND: The fit and function of a prosthetic socket depend on the prosthetist's ability to design the socket's shape to distribute load comfortably over the residual limb. We recently developed a sub-ischial socket for persons with transfemoral amputation: the Northwestern University Flexible Sub-Ischial Vacuum Socket. OBJECTIVE: This study aimed to quantify the rectifications required to fit the Northwestern University Flexible Sub-Ischial Vacuum Socket to teach the technique to prosthetists as well as provide a computer-aided design-computer-aided manufacturing option...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28094687/successful-management-of-femoral-trauma-in-a-through-knee-amputee-with-a-previous-malunited-fracture-implications-and-functional-outcome
#9
Beth Lineham, Paul Harwood, Peter Giannoudis
BACKGROUND: After amputation patients are more likely to injure their residual limb. An injury of a previously amputated limb, especially if the residuum is not anatomically normal, poses a dilemma for management. Case Description and Methods: This case report discusses a femoral fracture sustained proximal to a through-knee amputation. Findings and outcomes: The fracture was at the site of a malunited fracture. A shortening osteotomy with bone graft was undertaken to improve alignment and prosthetic fit and remove poor-quality bone...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28094686/northwestern-university-flexible-subischial-vacuum-socket-for-persons-with-transfemoral-amputation-part-1-description-of-technique
#10
Stefania Fatone, Ryan Caldwell
BACKGROUND: Current transfemoral prosthetic sockets restrict function, lack comfort, and cause residual limb problems. Lower proximal trim lines are an appealing way to address this problem. Development of a more comfortable and possibly functional subischial socket may contribute to improving quality of life of persons with transfemoral amputation. OBJECTIVES: The purpose of this study was to (1) describe the design and fabrication of a new subischial socket and (2) describe efforts to teach this technique...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28089230/metastatic-fractures-of-long-limb-bones
#11
REVIEW
P Anract, D Biau, P Boudou-Rouquette
The diagnosis of pathological fracture should be considered routinely in patients with long limb-bone fractures. Investigations must be performed to establish the diagnosis of pathological fracture then to determine that the bone lesion is a metastasis. In over 85% of cases, the clinical evaluation combined with a detailed analysis of the radiographs is sufficient to determine that the fracture occurred at a tumour site. Aetiological investigations establish that the tumour is a metastasis. In some patients, the diagnosis of metastatic cancer antedates the fracture...
January 11, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28078196/prosthetic-jamming-terminal-device-a-case-study-of-untethered-soft-robotics
#12
Nadia Cheng, John Amend, Todd Farrell, Debra Latour, Carlos Martinez, Jen Johansson, Anthony McNicoll, Marek Wartenberg, Samuel Naseef, William Hanson, William Culley
This article illuminates the major and often overlooked challenge of untethering soft robotic systems through the context of recent work, in which soft robotic gripper technology enabled by jamming of granular media was applied to a prosthetic jamming terminal device (PJTD). The PJTD's technical and market feasibility was evaluated in a pilot study with two upper-limb amputees. A PJTD prototype was tested against a commercial device (Motion Control electric terminal service with a one degree-of-freedom pinching mechanism) using two existing hand function tests: the first quantified the device's speed in picking and placing small blocks and the second evaluated a person's ability to perform activities of daily living (ADLs)...
December 1, 2016: Soft Robotics
https://www.readbyqxmd.com/read/28070628/osseointegrated-prosthetic-limb-for-the-treatment-of-lower-limb-amputations-experience-and-outcomes
#13
Munjed Al Muderis, William Lu, Jiao Jiao Li
BACKGROUND: Osseointegration has emerged over the past two decades as a dramatically different approach for the treatment of lower limb amputations, which involves direct attachment of the prosthesis to the skeletal residuum. This approach can address many of the socket-interface issues associated with socket prostheses which represent the current standard of care for amputees. The Osseointegrated Prosthetic Limb (OPL) is an osseointegration implant with a new design and improved features compared to other available implant systems...
January 9, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28068847/case-study-survey-of-patient-satisfaction-with-prosthesis-quality-and-design-among-below-knee-prosthetic-leg-socket-users
#14
Nurhanisah Mohd Hawari, Mohammad Jawaid, Paridah Md Tahir, Raja Ahmad Azmeer
The aim of this case study was to explore patient satisfaction with the quality of prosthetic leg sockets intended for persons with lower limb amputations. A qualitative study based on in-depth interviews, preceded by a questionnaire session, was carried out with patients from the Rehabilitation Center and Hospital in Malaysia. Twelve out-patient and in-patient amputees with lower limb amputations, specifically below-knee amputations, were chosen randomly. The analysis of patients' narratives aimed to identify the functional and esthetic characteristics of currently used prosthetic leg sockets and any problems related to them...
January 10, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28067123/the-effect-of-a-supervised-community-based-exercise-program-on-balance-balance-confidence-and-gait-in-individuals-with-lower-limb-amputation
#15
Carol A Miller, Jennifer E Williams, Katey L Durham, Selena C Hom, Julie L Smith
BACKGROUND: Many individuals with lower limb loss report concern with walking ability after completing structured traditional rehabilitation. OBJECTIVES: The purpose of this study was to explore the impact of a supervised community-based exercise program on balance, balance confidence, and gait in individuals with lower limb amputation. STUDY DESIGN: Repeated measures. METHODS: The supervised exercise program was offered biweekly for 6 weeks...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28066526/comparative-effectiveness-of-an-adjustable-transfemoral-prosthetic-interface-accommodating-volume-fluctuation-case-study
#16
Jason T Kahle, Tyler D Klenow, M Jason Highsmith
The socket-limb interface is vital for functionality and provides stability and mobility for the amputee. Volume fluctuation can lead to compromised fit and function. Current socket technology does not accommodate for volume fluctuation. An adjustable interface may improve function and comfort by filling this technology gap. The purpose of this study was to compare the effectiveness of the standard of care (SOC) ischial ramus containment to an adjustable transfemoral prosthetic interface socket in the accommodation of volume fluctuation...
September 2016: Technology and Innovation
https://www.readbyqxmd.com/read/28066522/predicting-walking-ability-following-lower-limb-amputation-an-updated-systematic-literature-review
#17
Jason T Kahle, M Jason Highsmith, Hans Schaepper, Anton Johannesson, Michael S Orendurff, Kenton Kaufman
There is not a clear clinical recommendation for the determination of prosthetic candidacy. Guidelines do not delineate which member(s) of the multidisciplinary team are responsible for prosthetic candidacy decisions and which factors will best predict a positive outcome. Also not clearly addressed is a patient-centered decision-making role. In a previous systematic review (SR), Sansam et al. reported on the prediction of walking ability following lower limb amputation using literature up to 2007. The search strategy was designed from the previous Sansam SR as an update of previously valuable predictive factors of prosthetic candidacy...
September 2016: Technology and Innovation
https://www.readbyqxmd.com/read/28066521/interventions-to-manage-residual-limb-ulceration-due-to-prosthetic-use-in-individuals-with-lower-extremity-amputation-a-systematic-review-of-the-literature
#18
M Jason Highsmith, Jason T Kahle, Tyler D Klenow, Casey R Andrews, Katherine L Lewis, Rachel C Bradley, Jessica M Ward, John J Orriola, James T Highsmith
Patients with lower extremity amputation (LEA) experience 65% more dermatologic issues than non-amputees, and skin problems are experienced by ≈75% of LEA patients who use prostheses. Continuously referring LEA patients to a dermatologist for every stump related skin condition may be impractical. Thus, physical rehabilitation professionals should be prepared to recognize and manage common non-emergent skin conditions in this population. The purpose of this study was to determine the quantity, quality, and strength of available evidence supporting treatment methods for prosthesis-related residual limb (RL) ulcers...
September 2016: Technology and Innovation
https://www.readbyqxmd.com/read/28057517/myoelectric-activation-pattern-changes-in-the-involved-limb-of-individuals-with-transtibial-amputation-during-locomotor-state-transitions
#19
Bryson H Nakamura, Michael E Hahn
OBJECTIVE: To investigate whether lower extremity muscle activation patterns differ in the strides leading to locomotive state transitions in the involved limb of individuals with transtibial amputation. It was hypothesized that all transitions would elicit activation differences between strides as the subjects moved toward the transition event. DESIGN: A single sample, observational study. SETTING: The study was conducted in the hallways, ramps and stairs of a university building...
January 2, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28055332/temperature-measurement-and-control-system-for-transtibial-prostheses-single-subject-clinical-evaluation
#20
Kamiar Ghoseiri, Yong Ping Zheng, Aaron K L Leung, Mehdi Rahgozar, Gholamreza Aminian, Mehdi Masoumi, Mohammad Reza Safari
The snug fit of a prosthetic socket over the residual limb can disturb thermal balance and put skin integrity in jeopardy by providing an unpleasant and infectious environment. The prototype of a temperature measurement and control (TM&C) system was previously introduced to resolve thermal problems related to prostheses. This study evaluates its clinical application in a setting with reversal, single subject design. The TM&C system was installed on fabricated prosthetic socket of a man with unilateral transtibial amputation...
January 5, 2017: Assistive Technology: the Official Journal of RESNA
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