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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/28105948/active-lower-limb-prosthetics-a-systematic-review-of-design-issues-and-solutions
#2
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/28099454/high-cable-forces-deteriorate-pinch-force-control-in-voluntary-closing-body-powered-prostheses
#3
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
#4
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/28094687/successful-management-of-femoral-trauma-in-a-through-knee-amputee-with-a-previous-malunited-fracture-implications-and-functional-outcome
#5
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/28070628/osseointegrated-prosthetic-limb-for-the-treatment-of-lower-limb-amputations-experience-and-outcomes
#6
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
#7
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/28066521/interventions-to-manage-residual-limb-ulceration-due-to-prosthetic-use-in-individuals-with-lower-extremity-amputation-a-systematic-review-of-the-literature
#8
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/28055332/temperature-measurement-and-control-system-for-transtibial-prostheses-single-subject-clinical-evaluation
#9
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
https://www.readbyqxmd.com/read/28051969/effects-of-adding-neuromuscular-electrical-stimulation-to-traditional-military-amputee-rehabilitation
#10
Laura A Talbot, Emily Brede, E Jeffrey Metter
BACKGROUND: Traumatic transtibial amputations lead to an early decline in the use and weight bearing of the residual limb. These changes result in progressive quadriceps muscle atrophy with strength loss that affects standing and walking. Neuromuscular electrical stimulation (NMES) may be useful as an adjunct to amputee prosthetic rehabilitation to maintain quadriceps muscle strength and mass. The objective of this pilot study was to compare the effects of a home-based NMES rehabilitation program plus the traditional military amputee rehabilitation program (TMARP) to the effects of TMARP alone on quadriceps muscle strength, functional mobility, and pain in military service members after a combat-related lower extremity amputation...
January 2017: Military Medicine
https://www.readbyqxmd.com/read/28042882/systematic-review-describing-the-effect-of-early-mobilization-after-dysvascular-major-lower-limb-amputations
#11
REVIEW
Ulla Riis Madsen, Ami Hommel, Connie Bøttcher Berthelsen, Carina Bååth
AIMS AND OBJECTIVES: To assess the effect of early mobilization of patients after dysvascular lower limb amputation and to compare the effectiveness of different mobilization regimens. BACKGROUND: Patients who have undergone dysvascular major lower limb amputations are at high risk of postoperative complications, which include loss of basic functions, and early mobilization interventions might prevent these complications. DESIGN: Systematic review...
January 2, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28040091/reconstruction-of-patellar-tendon-following-implantation-of-proximal-tibia-megaprosthesis-for-the-treatment-of-post-traumatic-septic-bone-defects
#12
Giorgio M Calori, Emilio Luigi Mazza, Luca Vaienti, Simone Mazzola, Alessandra Colombo, Luca Gala, Massimiliano Colombo
INTRODUCTION: Latest advances made in joint replacement implants allows reconstruction of entire limbs. These special prostheses or megaprostheses were originally designed for the treatment of severe oncological bone loss. Nowadays, however, the indications and applications of these devices are expanding to other orthopaedic and trauma clinical conditions. Since 2008 we have implanted 152 megaprostheses in non-oncological conditions: 87 were implanted for post-traumatic failures aseptic/septic (represented by complex non-unions and critical size bone defects); 26 total femur, 52 distal femur and 9 proximal tibia...
December 2016: Injury
https://www.readbyqxmd.com/read/28039023/determination-of-the-accuracy-of-navigated-kinematic-unicompartmental-knee-arthroplasty-a-2-year-follow-up
#13
Andrea L Grant, Kenji D Doma, Kaushik Hazratwala
BACKGROUND: Unicompartmental knee arthroplasty (UKA) lacks history of patient satisfaction and research addressing technique validity. The aim of this study was to determine minimally invasive navigated kinematic UKA accuracy by comparing postoperative limb alignment with preoperative stress values. METHODS: A single-center retrospective study was conducted on 53 consecutive patients (postoperative alignment: varus n = 51, valgus n = 2) who underwent computer navigation assisted UKA...
November 29, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28004988/biosynthetic-grafts-to-replace-infected-prosthetic-vascular-bypasses-a-single-center-experience
#14
Ingolf Töpel, Theresa Stigler, Isabelle Ayx, Thomas Betz, Christian Uhl, Markus Steinbauer
BACKGROUND: There are only a few options to replace infected infrainguinal synthetic vascular grafts in the absence of suitable autologous veins. To use a biosynthetic vascular graft (Omniflow(®)II) might be a valuable alternative. METHODS: We retrospectively analyzed the clinical course of 29 patients who underwent replacement of an infected infrainguinal vascular prosthesis (Szilagyi 3) by an Omniflow(®)II graft. RESULTS: Because of the lack of suitable autologous veins, 15 above-knee femoro-popliteal, 5 below-knee femoro-popliteal, and 9 femoro-tibial bypasses were replaced with biosynthetic grafts...
December 22, 2016: Surgical Infections
https://www.readbyqxmd.com/read/27997669/prosthesis-management-of-residual-limb-perspiration-with-subatmospheric-vacuum-pressure
#15
Glenn K Klute, Katherine J Bates, Jocelyn S Berge, Wayne Biggs, Charles King
For the ambulatory person with lower-limb amputation, insufficient management of perspiration can result in inadequate prosthesis adherence, reduced mobility, and discomfort. This study compared a dynamic air exchange (DAE) prosthesis designed to expel accumulated perspiration with a total surface bearing suction socket (Suction) that cannot. Five people with unilateral transtibial amputation participated in a randomized, crossover experiment. All subjects were given a 1 wk acclimation to each study prosthesis while we measured their step activity levels...
2016: Journal of Rehabilitation Research and Development
https://www.readbyqxmd.com/read/27965567/biomechanical-reconstruction-using-the-tacit-learning-system-intuitive-control-of-prosthetic-hand-rotation
#16
Shintaro Oyama, Shingo Shimoda, Fady S K Alnajjar, Katsuyuki Iwatsuki, Minoru Hoshiyama, Hirotaka Tanaka, Hitoshi Hirata
Background: For mechanically reconstructing human biomechanical function, intuitive proportional control, and robustness to unexpected situations are required. Particularly, creating a functional hand prosthesis is a typical challenge in the reconstruction of lost biomechanical function. Nevertheless, currently available control algorithms are in the development phase. The most advanced algorithms for controlling multifunctional prosthesis are machine learning and pattern recognition of myoelectric signals...
2016: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/27959816/a-real-time-gait-event-detection-for-lower-limb-prosthesis-control-and-evaluation
#17
Hafiz Farhan Maqbool, Muhammad Afif Bin Husman, Mohammed I Awad, Alireza Abouhossein, Nadeem Iqbal, Abbas A Dehghani-Sanij
Lower extremity amputees suffer from mobility limitations which will result in a degradation of their quality of life. Wearable sensors are frequently used to assess spatio-temporal, kinematic and kinetic parameters providing the means to establish an interactive control of the amputee-prosthesis-environment system. Gait events and the gait phase detection of an amputee's locomotion are vital for controlling lower limb prosthetic devices. The paper presents an approach to real-time gait event detection for lower limb amputees using a wireless gyroscope attached to the shank when performing level ground and ramp activities...
December 7, 2016: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/27956077/modular-cementless-prosthetic-reconstruction-after-resection-of-lower-extremity-malignant-tumor
#18
Senol Bekmez, Mehmet Ayvaz, Altug Yucekul, Mazhar Tokgozoglu
INTRODUCTION: The aim of the study is to report the preliminary clinical and functional outcomes of a modular cementless tumor resection prosthesis system (Megasystem-C(®), Waldemar Link GmbH&Co. KG, Hamburg, Germany) in patients undergoing limb salvage surgery with wide resection in a lower extremity primary or metastatic malignant bone tumor. MATERIAL AND METHODS: Fifty-two consecutive patients (33 male and 19 female; mean age 37.1 years (range, 16 to 79) with primary or metastatic lower extremity malignant bone tumor who underwent wide resection and reconstruction with cementless Megasystem-C(®) system were included in the study...
December 9, 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27934777/rodent-model-for-assessing-the-long-term-safety-and-performance-of-peripheral-nerve-recording-electrodes
#19
Srikanth Vasudevan, Kunal Patel, Cristin Welle
OBJECTIVE: In the US alone, there are approximately 185 000 cases of limb amputation annually, which can reduce the quality of life for those individuals. Current prosthesis technology could be improved by access to signals from the nervous system for intuitive prosthesis control. After amputation, residual peripheral nerves continue to convey motor signals and electrical stimulation of these nerves can elicit sensory percepts. However, current technology for extracting information directly from peripheral nerves has limited chronic reliability, and novel approaches must be vetted to ensure safe long-term use...
December 9, 2016: Journal of Neural Engineering
https://www.readbyqxmd.com/read/27912929/survival-failure-modes-and-function-of-combined-distal-femur-and-proximal-tibia-reconstruction-following-tumor-resection
#20
F Sevelda, W Waldstein, J Panotopoulos, C Stihsen, A Kaider, P T Funovics, R Windhager
BACKGROUND: Tumor spread to the knee joint or skip metastasis to the adjacent bones of the knee require reconstruction with combined distal femur and proximal tibia replacements. The literature on implant survival and failure modes with this type of reconstruction is sparse. The goals of this study were to determine the implant survival, the different failure modes and the functional outcome of this megaendoprosthetic reconstruction. PATIENTS AND METHODS: Thirty-nine patients with combined distal femur and proximal tibia reconstruction were retrospectively reviewed...
November 23, 2016: European Journal of Surgical Oncology
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