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https://www.readbyqxmd.com/read/29352411/the-impact-of-using-an-upper-limb-prosthesis-on-the-perception-of-real-and-illusory-weight-differences
#1
Gavin Buckingham, Johnny Parr, Greg Wood, Samuel Vine, Pan Dimitriou, Sarah Day
Little is known about how human perception is affected using an upper-limb prosthesis. To shed light on this topic, we investigated how using an upper-limb prosthesis affects individuals' experience of object weight. First, we examined how a group of upper-limb amputee prosthetic users experienced real mass differences and illusory weight differences in the context of the 'size-weight' illusion. Surprisingly, the upper-limb prosthetic users reported a markedly smaller illusion than controls, despite equivalent perceptions of a real mass difference...
January 19, 2018: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/29350089/a-comparative-analysis-of-internal-bone-remodelling-concepts-in-a-novel-implant-for-direct-skeletal-attachment-of-limb-prosthesis-evaluation-a-finite-element-analysis
#2
Piotr Prochor, Eugeniusz Sajewicz
Nowadays, numerous internal bone remodelling concepts are under development, in order to estimate long-term functionality of implants by evaluating the intensity of stress-shielding effect. This effect is also analysed for the implants for direct skeletal attachment, considered as a better exoprosthesis fixation method than prosthetic sockets. Most of bone remodelling approaches are based on basic concepts, differing with certain assumptions, which may affect the accuracy of the results. This article compares commonly used internal bone remodelling concepts and evaluates the functionality of the proposed Limb Prosthesis Osseointegrated Fixation System for direct skeletal attachment of limb prosthesis in comparison with two currently available implants: the Intraosseous Transcutaneous Amputation Prosthesis and the Osseointegrated Prostheses for the Rehabilitation of Amputees...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29343891/first-two-bilateral-hand-transplantations-in-india-part-3-rehabilitation-and-immediate-outcome
#3
Mohit Sharma, Subramania Iyer, P Kishore, Jimmy Mathew, Sundeep Vijayaraghavan, Ravi Sankaran, Arun N Nair, R Janarthanan, Abhijeet Wakure, Raghuveer Reddy, S M Chetan Mali, Visakh Varma, Ashish Chaudhari, Swapnil Dhake, Akshay Omkumar
Introduction: This report covers the strategies adopted for rehabilitation for the first and second dual hand transplants performed in India. Materials and Methods: The team, under a trained physiatrist, including physiotherapy and occupational therapy personnel, was involved in the management of both these patients. The management protocol was developed considering previous reports as well as our management strategies in the rehabilitation of the replanted hands...
May 2017: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/29340004/performance-and-kinematic-differences-in-putting-between-healthy-and-disabled-elite-golfers
#4
Tomáš Gryc, Petr Stastny, František Zahálka, Wojciech Smółka, Piotr Żmijewski, Artur Gołaś, Marek Zawartka, Tomáš Malý
Golfers with disability are limited in the execution of the full golf swing, but their performance in putting may be comparable because this stroke does not demand significant strength, balance and range of motion. Therefore, the aim of this study was to compare putting performance, kinetic and kinematic consistency between golfers with different disabilities and healthy athletes. The participants consisted of three disabled athletes (perinatal cerebral palsy, multiple sclerosis, below knee lower limb amputee) and three healthy golfers (age 34 ± 4...
December 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29322812/adjustment-to-finger-amputation-and-silicone-finger-prosthesis-use
#5
Zala Kuret, Helena Burger, Gaj Vidmar, Tomaz Maver
PURPOSE: Finger amputations are the most common amputations of upper limbs. They influence hand function, general functioning and quality of life. One of the possibilities for rehabilitation after finger amputation is fitting a silicone finger prosthesis. We wanted to evaluate the adjustment to amputation and prosthesis use in patients after finger amputation. METHODS: We included 42 patients with partial or complete single or multiple finger amputation of one hand who visited the outpatient clinic for prosthetics and orthotics at our institute and received a silicone prosthesis...
January 11, 2018: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29321625/cerebellar-grey-matter-modifications-in-lower-limb-amputees-not-using-prosthesis
#6
Antonella Di Vita, Maddalena Boccia, Liana Palermo, Federico Nemmi, Marco Traballesi, Stefano Brunelli, Roberto De Giorgi, Gaspare Galati, Cecilia Guariglia
Plastic brain changes following peripheral deafferentation, in particular those following limb amputations, are well-documented, with significant reduction of grey matter (GM) in the sensory-motor cerebral areas representing the amputated limb. However, few studies have investigated the role played by the use of a prosthesis in these structural brain modifications. Here we hypothesized that using a functional prosthesis that allows individuals to perform actions may reduce grey matter reduction. We investigated the brain structural reorganization following lower limb amputation by using a Voxel Based Morphometry (VBM) analysis of structural magnetic resonance imaging (MRI) in 8 right-handed individuals with lower limb amputation (LLA) fitted with prostheses (LLAwp), compared to 6 LLA who had never used a prosthesis (LLAnp)...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29320640/syme-amputation-a-systematic-review
#7
Rudwina Braaksma, Pieter U Dijkstra, Jan H B Geertzen
BACKGROUND: In the decision-making process toward an amputation of the lower extremity, knowledge about patient-related outcomes after amputation and rehabilitation is important. We have not found a systematic review that provides this knowledge for Syme amputation. The aim of this study was to present an overview of outcomes after a Syme amputation grouped according to the International Classification of Functioning, Disability and Health (ICF) model, focusing on body structures and functions, activities, and participation...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29317224/determining-reliability-of-a-dual-task-functional-mobility-protocol-for-individuals-with-lower-extremity-amputations
#8
Courtney Frengopoulos, Michael Wc Payne, Jeffrey Holmes, Ricardo Viana, Susan W Hunter
OBJECTIVES: To determine the relative and absolute reliability of a dual-task functional mobility assessment. DESIGN: Cross-sectional study. SETTING: Academic Rehabilitation Hospital. PARTICIPANTS: Sixty individuals with lower extremity amputation (LEA) attending an outpatient amputee clinic (age= 58.21±12.59; 80.0% male). Subjects were stratified into three groups: 1) transtibial amputations of vascular etiology (TTA-vas), transtibial amputations of non-vascular etiology (TTA-nonvas); transfemoral or bilateral amputees (TFA/bilat) of any etiology...
January 6, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29303362/the-demands-of-amputee-soccer-impair-muscular-endurance-and-power-indices-but-not-match-physical-performance
#9
Mário A M Simim, Gustavo R da Mota, Moacir Marocolo, Bruno V C da Silva, Marco Túlio de Mello, Paul S Bradley
We investigated the match demands (distances covered and acute physiological responses) of amputee soccer and its impact on muscular endurance and power. Measures such as heart rate, blood lactate concentration, subjective rating of perceived exertion, and time-motion characteristics were recorded in 16 Brazilian amputee soccer players during matches. Before and after matches, players completed a battery of tests: push-ups, countermovement vertical jump performance, and medicine ball throwing. Small differences were found between the first and second half for the distance covered in total and across various speed categories...
January 5, 2018: Adapted Physical Activity Quarterly: APAQ
https://www.readbyqxmd.com/read/29303002/physical-activity-participation-amongst-individuals-with-lower-limb-amputation
#10
Jennifer Langford, Michael P Dillon, Catherine L Granger, Chris Barr
PURPOSE: To examine physical activity participation amongst individuals with lower limb amputation. METHOD: Adults with lower limb amputation were convenience-sampled from a major metropolitan hospital outpatient amputee service and completed the International Physical Activity Questionnaire. RESULTS: Seventy-two individuals (65% male), mean age 53.6 (SD = 16.8) years, who were 10.8 (SD = 12.6) years post amputation (60% transtibial) participated in the study...
January 5, 2018: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29298708/case-study-of-a-user-driven-prosthetic-arm-design-bionic-hand-versus-customized-body-powered-technology-in-a-highly-demanding-work-environment
#11
Wolf Schweitzer, Michael J Thali, David Egger
BACKGROUND: Prosthetic arm research predominantly focuses on "bionic" but not body-powered arms. However, any research orientation along user needs requires sufficiently precise workplace specifications and sufficiently hard testing. Forensic medicine is a demanding environment, also physically, also for non-disabled people, on several dimensions (e.g., distances, weights, size, temperature, time). METHODS: As unilateral below elbow amputee user, the first author is in a unique position to provide direct comparison of a "bionic" myoelectric iLimb Revolution (Touch Bionics) and a customized body-powered arm which contains a number of new developments initiated or developed by the user: (1) quick lock steel wrist unit; (2) cable mount modification; (3) cast shape modeled shoulder anchor; (4) suspension with a soft double layer liner (Ohio Willowwood) and tube gauze (Molnlycke) combination...
January 3, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29296558/advances-in-limb-salvage-treatment-of-osteosarcoma
#12
REVIEW
Yichun Yang, Lei Han, Zewei He, Xiaojuan Li, Suping Yang, Jifei Yang, Ya Zhang, Dongqi Li, Yihaho Yang, Zuozhang Yang
Osteosarcoma is the most common primary malignant bone tumor; its standard treatment includes neoadjuvant chemotherapy combined with surgery. Neoadjuvant chemotherapy has significantly improved the 5-year survival and limb salvage rates in osteosarcoma since the 1870s. The survival rate of patients with limb salvage was not inferior to that of amputees, and therefore, limb salvage has become the main surgical option for patients with osteosarcoma. The 5-year survival rate for osteosarcoma has plateaued. However, new advances in limb salvage therapy in osteosarcoma, including adjuvant chemotherapy, ablation techniques, bone transport techniques, and computer navigation techniques, are now available...
March 2018: Journal of Bone Oncology
https://www.readbyqxmd.com/read/29284534/perineural-local-anaesthetic-catheter-after-major-lower-limb-amputation-trial-placement-study-protocol-for-a-randomised-controlled-pilot-study
#13
David C Bosanquet, Graeme K Ambler, Cherry-Ann Waldron, Emma Thomas-Jones, Lucy Brookes-Howell, Mark Kelson, Tim Pickles, Debbie Harris, Deborah Fitzsimmons, Neeraj Saxena, Christopher P Twine
BACKGROUND: Pain after major lower limb amputation for peripheral arterial disease (PAD) is a significant problem. A perineural catheter (PNC) can be placed adjacent to the major nerve at the time of amputation with a continuous local anaesthetic infusion given postoperatively to try and reduce pain. Although low-quality observational data suggest that PNC usage reduces postoperative opioid requirements, there are limited data regarding its effect on pain. The aim of PLACEMENT is to explore the feasibility of running an effectiveness trial to assess the impact of a PNC with continuous local anaesthetic infusion, inserted at the time of amputation, on short and medium-term postoperative outcomes...
December 28, 2017: Trials
https://www.readbyqxmd.com/read/29284521/exercise-intervention-for-unilateral-amputees-with-low-back-pain-study-protocol-for-a-randomised-controlled-trial
#14
Joseph G Wasser, Daniel C Herman, MaryBeth Horodyski, Jason L Zaremski, Brady Tripp, Phillip Page, Kevin R Vincent, Heather K Vincent
BACKGROUND: Atraumatic lower limb amputation is a life-changing event for approximately 185,000 persons in the United States each year. A unilateral amputation is associated with rapid changes to the musculoskeletal system including leg and back muscle atrophy, strength loss, gait asymmetries, differential mechanical joint loading and leg length discrepancies. Even with high-quality medical care and prostheses, amputees still develop secondary musculoskeletal conditions such as chronic low back pain (LBP)...
December 29, 2017: Trials
https://www.readbyqxmd.com/read/29276850/maintaining-stable-transfemoral-amputee-gait-on-level-sloped-and-simulated-uneven-conditions-in-a-virtual-environment
#15
James A Sturk, Edward D Lemaire, Emily H Sinitski, Nancy L Dudek, Markus Besemann, Jacqueline S Hebert, Natalie Baddour
PURPOSE: Describe and quantify how people with transfemoral amputations (TFA) maintain stable gait over a variety of surfaces; including, downhill and uphill, top and bottom-cross-slopes, medial-lateral translations, rolling hills and simulated rocky surfaces. METHODS: Ten TFA and ten matched people without amputations (NA) walked in a virtual environment with level, sloped and simulated uneven surfaces on a self-paced treadmill. Stability was quantified using medial-lateral margin of stability (ML-MoS), step parameters, and gait variability (standard deviations for speed, temporal-spatial parameters, foot clearance and root-mean-square of medial-lateral trunk acceleration)...
December 24, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29276305/stable-robust-hybrid-zero-dynamics-control-of-powered-lower-limb-prostheses
#16
Anne E Martin, Robert D Gregg
To improve the quality of life for lower-limb amputees, powered prostheses are being developed. Advanced control schemes from the field of bipedal robots, such as hybrid zero dynamics (HZD), may provide great performance. HZD-based control specifies the motion of the actuated joints using output functions to be zeroed, and the required torques are calculated using input-output linearization. For one-step periodic gaits, there is an analytic metric of stability. To apply HZD-based control on a powered prosthesis, several modifications must be made...
August 2017: IEEE Transactions on Automatic Control
https://www.readbyqxmd.com/read/29261703/transhumeral-loading-during-advanced-upper-extremity-activities-of-daily-living
#17
Alex J Drew, Morgan T Izykowski, Kent N Bachus, Heath B Henninger, K Bo Foreman
Percutaneous osseointegrated (OI) implants for direct skeletal attachment of upper extremity prosthetics represent an alternative to traditional socket suspension that may yield improved patient function and satisfaction. This is especially true in high-level, transhumeral amputees where prosthetic fitting is challenging and abandonment rates remain high. However, maintaining mechanical integrity of the bone-implant interface is crucial for safe clinical introduction of this technology. The collection of population data on the transhumeral loading environment will aid in the design of compliance and overload protection devices that mitigate the risk of periprosthetic fracture...
2017: PloS One
https://www.readbyqxmd.com/read/29249656/brain-computer-interface-with-inhibitory-neurons-reveals-subtype-specific-strategies
#18
Akinori Mitani, Mingyuan Dong, Takaki Komiyama
Brain-computer interfaces have seen an increase in popularity due to their potential for direct neuroprosthetic applications for amputees and disabled individuals. Supporting this promise, animals-including humans-can learn even arbitrary mapping between the activity of cortical neurons and movement of prosthetic devices [1-4]. However, the performance of neuroprosthetic device control has been nowhere near that of limb control in healthy individuals, presenting a dire need to improve the performance. One potential limitation is the fact that previous work has not distinguished diverse cell types in the neocortex, even though different cell types possess distinct functions in cortical computations [5-7] and likely distinct capacities to control brain-computer interfaces...
December 5, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/29220324/performance-of-optimized-prosthetic-ankle-designs-that-are-based-on-a-hydraulic-variable-displacement-actuator-vda
#19
James Gardiner, Abu Zeeshan Bari, Laurence Kenney, Martin Twiste, David Moser, Saeed Zahedi, David Howard
Current energy storage and return prosthetic feet only marginally reduce the cost of amputee locomotion compared with basic solid ankle cushioned heel feet, possibly due to their lack of push-off at the end of stance. To the best of our knowledge, a prosthetic ankle that utilizes a hydraulic variable displacement actuator (VDA) to improve push-off performance has not previously been proposed. Therefore, here we report a design optimization and simulation feasibility study for a VDA-based prosthetic ankle. The proposed device stores the eccentric ankle work done from heel strike to maximum dorsiflexion in a hydraulic accumulator and then returns the stored energy to power push-off...
December 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/29215082/the-myokinetic-control-interface-tracking-implanted-magnets-as-a-means-for-prosthetic-control
#20
S Tarantino, F Clemente, D Barone, M Controzzi, C Cipriani
Upper limb amputation deprives individuals of their innate ability to manipulate objects. Such disability can be restored with a robotic prosthesis linked to the brain by a human-machine interface (HMI) capable of decoding voluntary intentions, and sending motor commands to the prosthesis. Clinical or research HMIs rely on the interpretation of electrophysiological signals recorded from the muscles. However, the quest for an HMI that allows for arbitrary and physiologically appropriate control of dexterous prostheses, is far from being completed...
December 7, 2017: Scientific Reports
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