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https://www.readbyqxmd.com/read/28537564/analysis-of-selected-factors-determining-quality-of-life-in-patients-after-lower-limb-amputation-a-review-article
#1
Anna Grzebień, Mariusz Chabowski, Maciej Malinowski, Izabella Uchmanowicz, Magdalena Milan, Dariusz Janczak
The amputation of the lower limb is a crippling procedure, which impairs both physical and mental aspect of the patient's life and therefore, it is important to provide these patients with comprehensive health care. Patients and their families must change their lives and reorganize them, which is undoubtedly associated with a decrease in the quality of life. The aim of this study was to analyze various determinants of quality of life in patients after lower limb amputation and their impact on the physical, mental and social aspect of life...
April 30, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28534664/predict-the-medicare-functional-classification-level-k-level-using-the-amputee-mobility-predictor-in-people-with-unilateral-transfemoral-and-transtibial-amputation-a-pilot-study
#2
Michael P Dillon, Matthew J Major, Brian Kaluf, Yuri Balasanov, Stefania Fatone
BACKGROUND: While Amputee Mobility Predictor scores differ between Medicare Functional Classification Levels (K-level), this does not demonstrate that the Amputee Mobility Predictor can accurately predict K-level. OBJECTIVES: To determine how accurately K-level could be predicted using the Amputee Mobility Predictor in combination with patient characteristics for persons with transtibial and transfemoral amputation. STUDY DESIGN: Prediction...
May 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28533599/the-effect-of-segmental-weight-of-prosthesis-on-hemodynamic-responses-and-energy-expenditure-of-lower-extremity-amputees
#3
Akmer Mutlu, Mohammad Dawood Kharooty, Yavuz Yakut
[Purpose] The aim of this study was to investigate the effect of segmental weight of the prosthesis on hemodynamic responses and energy expenditure in lower extremity amputees. [Subjects and Methods] Thirteen patients with a mean age of 44 ± 15.84 years and with unilateral transtibial, transfemoral and Syme's amputation were included to the study. The difference between the lightest and the heaviest prosthesis, 250 g used as the weight. All the patients completed the measurements first without weight and then with 250 g weight on the ankle joint...
April 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28532184/a-review-of-invasive-and-non-invasive-sensory-feedback-in-upper-limb-prostheses
#4
Pamela Svensson, Ulrika Wijk, Anders Björkman, Christian Antfolk
The constant challenge to restore sensory feedback in prosthetic hands has provided several research solutions, but virtually none has reached clinical fruition. A prosthetic hand with sensory feedback that closely imitates an intact hand and provides a natural feeling may induce the prosthetic hand to be included in the body image and also reinforces the control of the prosthesis. Areas covered: This review presents non-invasive sensory feedback systems such as mechanotactile, vibrotactile, electrotactile and combinational systems which combine the modalities; multi-haptic feedback...
May 22, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28525946/ghrelin-attenuates-vascular-calcification-in-diabetic-patients-with-amputation
#5
Suining Xu, Fei Ye, Lihua Li, Jinchuan Yan, Zhengyang Bao, Zhen Sun, Liangjie Xu, Jie Zhu, Zhongqun Wang
Vascular calcification is established to be a critical factor in diabetes mellitus, which causes cardiovascular and amputation complication of diabetic patients. OPG/RANKL/RANK axis serves as a regulatory role in vascular calcification. Ghrelin, an endogenous ligand of growth hormone secretagogue receptor (GHSR), has been reported to exhibit potent cardiovascular protective effects. However, the role of ghrelin in the regulation of diabetic vascular calcification is still elusive. Here, we reported the role of ghrelin and its relationship with OPG/RANKL/RANK system in patients with diabetic foot amputation...
May 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28523276/improving-the-robustness-of-real-time-myoelectric-pattern-recognition-against-arm-position-changes-in-transradial-amputees
#6
Yanjuan Geng, Oluwarotimi Williams Samuel, Yue Wei, Guanglin Li
Previous studies have showed that arm position variations would significantly degrade the classification performance of myoelectric pattern-recognition-based prosthetic control, and the cascade classifier (CC) and multiposition classifier (MPC) have been proposed to minimize such degradation in offline scenarios. However, it remains unknown whether these proposed approaches could also perform well in the clinical use of a multifunctional prosthesis control. In this study, the online effect of arm position variation on motion identification was evaluated by using a motion-test environment (MTE) developed to mimic the real-time control of myoelectric prostheses...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28505545/leg-stiffness-during-sprinting-in-transfemoral-amputees-with-running-specific-prosthesis
#7
Yoko Sano, Atsushi Makimoto, Satoru Hashizume, Akihiko Murai, Yoshiyuki Kobayashi, Hiroshi Takemura, Hiroaki Hobara
Carbon fiber running-specific prostheses are designed to reproduce the spring-like stepping behavior of individuals similar to springs loaded by the entire body mass (i.e. spring-mass model). The aim of this study was to test whether leg stiffness would be modulated differently between intact and prosthetic legs in transfemoral amputees wearing RSP during sprinting. Eight unilateral transfemoral amputees performed maximum sprinting along an indoor overground runway. Leg stiffness was calculated from kinetic and kinematic data in intact and prosthetic legs...
May 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28499159/sensitivity-of-biomechanical-outcomes-to-independent-variations-of-hindfoot-and-forefoot-stiffness-in-foot-prostheses
#8
Peter Gabriel Adamczyk, Michelle Roland, Michael E Hahn
Many studies have reported the effects of different foot prostheses on gait, but most results cannot be generalized because the prostheses' properties are seldom reported. We varied hindfoot and forefoot stiffness in an experimental foot prosthesis, in increments of 15N/mm, and tested the parametric effects of these variations on treadmill walking in unilateral transtibial amputees, at speeds from 0.7 to 1.5m/s. We computed outcomes such as prosthesis energy return, center of mass (COM) mechanics, ground reaction forces, and joint mechanics, and computed their sensitivity to component stiffness...
May 9, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28492520/an-ecologically-controlled-exoskeleton-can-improve-balance-recovery-after-slippage
#9
V Monaco, P Tropea, F Aprigliano, D Martelli, A Parri, M Cortese, R Molino-Lova, N Vitiello, S Micera
The evolution to bipedalism forced humans to develop suitable strategies for dynamically controlling their balance, ensuring stability, and preventing falling. The natural aging process and traumatic events such as lower-limb loss can alter the human ability to control stability significantly increasing the risk of fall and reducing the overall autonomy. Accordingly, there is an urgent need, from both end-users and society, for novel solutions that can counteract the lack of balance, thus preventing falls among older and fragile citizens...
May 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28489541/the-effect-of-prosthesis-use-on-hand-mental-rotation-after-unilateral-upper-limb-amputation
#10
Xiaoli Guo, Zixuan Lin, Yuanyuan Lyu, Robin Bekrater-Bodmann, Herta Flor, Shanbao Tong
Amputation of a limb induces changes in the so-called body schema, which might be influenced by the use of prosthetic devices. Changes in the body representation associated with prosthesis use could be investigated using a hand mental rotation task. However, direct neurophysiologic evidence for the effect of prosthesis use on hand mental rotation is still lacking. In this study, we recruited two groups of unilateral upper-limb amputees, i.e., amputees using a prosthesis or with a history of prosthesis use (Pro group) and amputees without a prosthesis (non-Pro group), as well as a sample of matched healthy controls...
May 8, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28487630/analysis-of-interrelationships-among-voluntary-and-prosthetic-leg-joint-parameters-using-cyclograms
#11
Farahiyah Jasni, Nur Azah Hamzaid, Nor Elleeiana Mohd Syah, Tze Y Chung, Noor Azuan Abu Osman
The walking mechanism of a prosthetic leg user is a tightly coordinated movement of several joints and limb segments. The interaction among the voluntary and mechanical joints and segments requires particular biomechanical insight. This study aims to analyze the inter-relationship between amputees' voluntary and mechanical coupled leg joints variables using cyclograms. From this analysis, the critical gait parameters in each gait phase were determined and analyzed if they contribute to a better powered prosthetic knee control design...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28480691/profile-of-match-performance-and-heart-rate-response-in-japanese-amputee-soccer
#12
Hirofumi Maehana, Aya Miyamoto, Kenichi Koshiyama, Toshio Tanaka Yanagiya, Masafumi Yoshimura
BACKGROUND: The purpose of this study was to profile the match performance and heart rate response in Japanese amputee soccer. METHODS: Twelve amputee soccer players participated in this study. Match data were collected 20 samples in 4 matches. Match performances data such as total distance, high-intensity running (HIR: ≥13km·h-1) were collected using a global positioning systems technology. Heart rate (HR) was recorded using short-range radio telemetry. In addition, the rating of perceived exertion (RPE) was assessed immediately using Borg's original after the first half and the second half...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28476209/vacuum-level-effects-on-knee-contact-force-for-unilateral-transtibial-amputees-with-elevated-vacuum-suspension
#13
Hang Xu, Kasey Greenland, Donald Bloswick, Jie Zhao, Andrew Merryweather
The elevated vacuum suspension system (EVSS) has demonstrated unique health benefits for amputees, but the effect of vacuum pressure values on knee contact force (KCF) is still unclear. The objective of this study was to investigate the effect of vacuum levels on KCF for unilateral transtibial amputees (UTA) using the EVSS. Three-dimensional gait was modeled for 9 UTA with five vacuum levels (0-20inHg [67.73kPa], 5inHg [16.93kPa] increments) and 9 non-amputees based on kinematic and ground reaction force data...
April 20, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28472991/resolving-the-effect-of-wrist-position-on-myoelectric-pattern-recognition-control
#14
Adenike A Adewuyi, Levi J Hargrove, Todd A Kuiken
BACKGROUND: The use of pattern recognition-based methods to control myoelectric upper-limb prostheses has been well studied in individuals with high-level amputations but few studies have demonstrated that it is suitable for partial-hand amputees, who often possess a functional wrist. This study's objective was to evaluate strategies that allow partial-hand amputees to control a prosthetic hand while allowing retain wrist function. METHODS: EMG data was recorded from the extrinsic and intrinsic hand muscles of six non-amputees and two partial-hand amputees while they performed 4 hand motions in 13 different wrist positions...
May 4, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28470463/-the-endo-exo-prosthesis-treatment-concept-improvement-in-quality-of-life-after-limb-amputation
#15
T Hoffmeister, F Schwarze, H H Aschoff
Osseointegrated, percutaneous implants as the force bearer for exoprosthetics after limb amputation have been used in individual cases for clinical rehabilitation of amputees during the past years. Most experience in this field in Germany has been accumulated at the Sana Klinik in Lübeck with the so-called endo-exo prosthesis (EEP) system. The two-step implantation procedure can now be considered as reliable. Following a well-documented learning curve initial soft tissue problems concerning the cutaneous stoma can now be regarded as exceptions...
May 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28470462/-connecting-adapter-for-coupling-exoprostheses-to-endoshafts-demands-on-orthopedic-technicians-with-respect-to-planning-and-application
#16
H Grundei, A Timmermann
INTRODUCTION: Transcutaneous, bone anchored prostheses have proved to be an alternative for amputees. In addition to the safe osseointegration of the implant, the correct prosthetic alignment is also important. Therefore, the interaction between prosthesis components and the prosthesis wearer is significant and the role of the certified prosthetist should not be underestimated. AIM: The aim of treatment is the best possible compensation of disability after limb loss with increase of physical abilities and comfort of the prosthesis wearer by means of bone anchored prosthesis...
May 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28470108/residual-limb-claudication-after-vascular-transfemoral-amputation
#17
Riemke Ga de Boer, Marieke A Paping, Bert Kap, Jan Hb Geertzen
BACKGROUND: In all, 68% of all lower limb amputees experience residual limb pain. More than 95% of all lower limb amputations in developed countries are due to peripheral artery occlusive disease in combination with diabetes mellitus. Therefore, claudication, which is one of the most common manifestations of peripheral artery occlusive disease, should be taken into consideration in making a differential diagnosis of residual limb pain. Case description and methods: We present a case study of a 60-year-old diabetic patient who underwent a transfemoral amputation due to peripheral artery occlusive disease and who experiences residual limb pain...
May 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28468600/sensory-feedback-add-on-for-upper-limb-prostheses
#18
Nader Fallahian, Hassan Saeedi, Hamidreza Mokhtarinia, Farhad Tabatabai Ghomshe
BACKGROUND AND AIM: Sensory feedback systems have been of great interest in upper-limb prosthetics. Despite tremendous research, there are no commercial modality-matched feedback systems. This article aims to introduce the first detachable and feedback add-on option that can be attached to in-use prostheses. TECHNIQUE: A sensory feedback system was tested on a below-elbow myoelectric prosthesis. The aim was to have the amputee grasp fragile objects without crushing while other accidental feedback sources were blocked...
June 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28468477/-lower-limb-amputations-and-rehabilitation
#19
Reinhild Lange, Unn Ljøstad
BACKGROUND We wished to study the therapy for lower limb amputees at Sørlandet Hospital Kristiansand after restructuring of activities in 2004.MATERIAL AND METHOD All lower limb amputees hospitalised in the Department of Physical Medicine and Rehabilitation between March 2012 and July 2015 were followed up prospectively.RESULTS A total of 50 patients with 54 amputations were followed up for at least three months. Altogether 31 transtibial amputations, 22 transfemoral amputations and one knee disarticulation were performed...
May 2017: Tidsskrift for Den Norske Lægeforening: Tidsskrift for Praktisk Medicin, Ny Række
https://www.readbyqxmd.com/read/28467317/deep-learning-based-artificial-vision-for-grasp-classification-in-myoelectric-hands
#20
Ghazal Ghazaei, Ali Alameer, Patrick Degenaar, Graham Morgan, Kianoush Nazarpour
OBJECTIVE: Computer vision-based assistive technology solutions can revolutionise the quality of care for people with sensorimotor disorders. The goal of this work was to enable trans-radial amputees to use a simple, yet efficient, computer vision system to grasp and move common household objects with a two-channel myoelectric prosthetic hand. APPROACH: We developed a deep learning-based artificial vision system to augment the grasp functionality of a commercial prosthesis...
June 2017: Journal of Neural Engineering
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