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https://www.readbyqxmd.com/read/28649911/three-dimensional-printed-upper-limb-prostheses-lack-randomised-controlled-trials-a-systematic-review
#1
Laura E Diment, Mark S Thompson, Jeroen Hm Bergmann
BACKGROUND: Three-dimensional printing provides an exciting opportunity to customise upper-limb prostheses. OBJECTIVE: This review summarises the research that assesses the efficacy and effectiveness of three-dimensional printed upper-limb prostheses. STUDY DESIGN: Systematic review. METHODS: PubMed, Web of Science and OVID were systematically searched for studies that reported human trials of three-dimensional printed upper-limb prostheses...
June 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28642109/neoaortic-xenoprosthetic-grafts-for-treatment-of-mycotic-aneurysms-and-infected-aortic-grafts
#2
C Anibueze, V Sankaran, U Sadat, K Tan, Y G Wilson, R E Brightwell, M S Delbridge, P W Stather
OBJECTIVE: There is no international consensus regarding the optimum management of infected aortae (mycotic aneurysms, infected aortic grafts). Neoaortoiliac reconstruction has advantages over extra anatomical bypass grafting; however use of autologous vein is associated with venous hypertension and compartment syndrome, alternatively cadaveric homografts are associated with high rates of perianastomotic haemorrhage, limb occlusion and pseudoaneurysm. Arterial repair using xenoprosthetic patches is associated with lower infection rates compared to the use of prosthetic material...
June 19, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28639478/relation-between-capacity-and-performance-in-paediatric-upper-limb-prosthesis-users
#3
Helen Lindner, Ayako Hiyoshi, Liselotte Hermansson
BACKGROUND: The International Classification of functioning, disability and health refers capacity to what an individual can do in a standardised environment and describes performance as what an individual really does and whether the individual encounters any difficulty in the real-life environment. Measures of capacity and performance can help to determine if there is any gap between them that may restrict participation. The aim of this study was to explore the relationship between capacity scores obtained in a standardised clinical setting and proportional ease of performance obtained from a real-life environment...
June 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28637137/development-and-acceptability-testing-of-decision-trees-for-self-management-of-prosthetic-socket-fit-in-adults-with-lower-limb-amputation
#4
Daniel Joseph Lee, Diana A Veneri
PURPOSE: The most common complaint lower limb prosthesis users report is inadequacy of a proper socket fit. Adjustments to the residual limb-socket interface can be made by the prosthesis user without consultation of a clinician in many scenarios through skilled self-management. Decision trees guide prosthesis wearers through the self-management process, empowering them to rectify fit issues, or referring them to a clinician when necessary. This study examines the development and acceptability testing of patient-centered decision trees for lower limb prosthesis users...
February 21, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28632147/crossover-iliofemoral-bypass-graft-through-tension-free-abdominal-wall-repair-mesh
#5
Mircea Muresan, Ovidiu Jimborean, Gabriela Jimborean, Radu Neagoe, Serban Bancu, Muresan Simona, Cristian Borz
INTRODUCTION: In vascular surgery the crossover iliofemoral bypass grafting is a well-known surgical technique. In general surgery the repair of an abdominal defect using a Polypropylene mesh is also a standard procedure. A particular technique is defined by the performance of these 2 separate procedures inside a single operation in which the crossover arterial graft is directed from the retroperitoneal space toward the contra-lateral femoral bifurcation through a Polypropylene mesh which closes the musculoaponeurotic layers of the abdominal wall...
June 8, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28628623/use-of-the-deka-arm-for-amputees-with-brachial-plexus-injury-a-case-series
#6
Linda Resnik, Christopher Fantini, Gail Latlief, Samuel Phillips, Nicole Sasson, Eve Sepulveda
OBJECTIVE: Patients with upper limb amputation and brachial plexus injuries have high rates of prosthesis rejection. Study purpose is to describe experiences of subjects with transhumeral amputation and brachial plexus injury, who were fit with, and trained to use, a DEKA Arm. METHODS: This was a mixed-methods study utilizing qualitative (e.g. interview, survey) and quantitative data (e.g. self-report and performance measures). Subject 1, a current prosthesis user, had a shoulder arthrodesis...
2017: PloS One
https://www.readbyqxmd.com/read/28611573/simultaneous-and-continuous-estimation-of-shoulder-and-elbow-kinematics-from-surface-emg-signals
#7
Qin Zhang, Runfeng Liu, Wenbin Chen, Caihua Xiong
In this paper, we present a simultaneous and continuous kinematics estimation method for multiple DoFs across shoulder and elbow joint. Although simultaneous and continuous kinematics estimation from surface electromyography (EMG) is a feasible way to achieve natural and intuitive human-machine interaction, few works investigated multi-DoF estimation across the significant joints of upper limb, shoulder and elbow joints. This paper evaluates the feasibility to estimate 4-DoF kinematics at shoulder and elbow during coordinated arm movements...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28605277/ground-reaction-forces-during-sprinting-in-unilateral-transfemoral-amputees
#8
Atsushi Makimoto, Yoko Sano, Satoru Hashizume, Akihiko Murai, Yoshiyuki Kobayashi, Hiroshi Takemura, Hiroaki Hobara
Understanding the characteristics of ground reaction forces (GRFs) on both limbs during sprinting in unilateral amputees wearing running-specific prostheses would provide important information that could be utilized in the evaluation of athletic performance and development of training methods in this population. The purpose of this study was to compare GRFs between intact and prosthetic limbs during sprinting in unilateral transfemoral amputees wearing running-specific prostheses. Nine sprinters with unilateral transfemoral amputation wearing the same type of prosthesis performed maximal sprinting on a 40 m of runway...
June 12, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28600996/lower-limb-alignment-and-laxity-measures-before-during-and-after-total-knee-arthroplasty-a-prospective-cohort-study
#9
Jon V Clarke, Angela H Deakin, Frederic Picard, Philip E Riches
BACKGROUND: This study compared knee alignment and laxity in patients before, during and after total knee arthroplasty, using methodologically similar procedures, with an aim to help inform pre-operative planning. METHODS: Eighteen male and 13 female patients were recruited, mean age 66years (51-82) and mean body mass index of 33 (23-43). All were assessed pre- and postoperatively using a non-invasive infrared position capture system and all underwent total knee arthroplasty using a navigation system...
May 26, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28594815/preparation-of-biomimetic-hierarchically-helical-fiber-actuators-from-carbon-nanotubes
#10
Jue Deng, Yifan Xu, Sisi He, Peining Chen, Luke Bao, Yajie Hu, Bingjie Wang, Xuemei Sun, Huisheng Peng
Mechanically responsive materials that are able to sense and respond to external stimuli have important applications in soft robotics and the formation of artificial muscles, such as intelligent electronics, prosthetic limbs, comfort-adjusting textiles and miniature actuators for microfluidics. However, previous artificial muscles based on polymer materials are insufficient in generating large actuations, fast responses, diverse deformation modes and high cycle performances. To this end, carbon nanotubes (CNTs) are proposed as promising candidates to be assembled into artificial muscles, as they are lightweight, robust and have high surface-to-volume ratios...
July 2017: Nature Protocols
https://www.readbyqxmd.com/read/28594796/hybrid-surgery-in-chronic-thoracoabdominal-aortic-dissection
#11
A M Cherniavskiĭ, D A Sirota, T Caus, D S Khvan, S A Al'sov, M M Liashenko
The authors describe and analyse their experience gained in performing prosthetic repair of the thoracoabdominal portion of the aorta, combined with open aortic stenting using the Djumbodis uncovered metal stent. Over the period from 2013 to 2015 we performed a total of 16 hybrid interventions. All patients were found to have type B aortic dissection, with their false and true lumens patent. All patients underwent reconstruction of the thoracoabdominal aorta combined with open implantation of the Djumbodis uncovered metal stent into the area of lower thoracic and visceral arteries...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28587797/comparison-of-long-term-outcomes-of-heparin-bonded-polytetrafluoroethylene-and-autologous-vein-below-knee-femoropopliteal-bypasses-in-patients-with-critical-limb-ischaemia
#12
C Uhl, C Grosch, C Hock, I Töpel, M Steinbauer
OBJECTIVE/BACKGROUND: Endovascular first is the preferred therapy approach to critical limb ischaemia (CLI). However, in spite of new endovascular techniques, bypass surgery still plays an important role, especially in patients with complex anatomy in whom endovascular therapy is not considered feasible, or has failed. The goal of this study was to analyse the outcomes of prosthetic or autologous vein for femoropopliteal (P3) bypasses performed under the abovementioned conditions. METHODS: A retrospective analysis of patients who underwent a femoropopliteal (P3) bypass for CLI (March 2007-December 2015) was conducted...
June 3, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28577723/postoperative-infections-after-limb-sparing-surgery-for-primary-bone-tumors-of-the-pelvis-incidence-characterization-and-functional-impact
#13
REVIEW
M Severyns, S Briand, D Waast, S Touchais, A Hamel, F Gouin
INTRODUCTION: Surgical site infections (SSI) represent the most common postoperative complication after limb sparing surgery for primary malignant bone tumors, with incidence ranging from 10 to 47%. There is no consensus concerning about the optimal surgical strategy, or the adequate antibiotic prophylaxis in pelvic resections. A greater knowledge of these infections and their surgical trajectories seem essential to obtain. MATERIALS AND METHODS: We retrospectively studied 45 cases of pelvic resection, including at least the periacetabular zone 2 of Enneking, performed between 1989 and 2013 in the same center...
June 2017: Surgical Oncology
https://www.readbyqxmd.com/read/28575012/characterization-of-interfacial-socket-pressure-in-transhumeral-prostheses-a-case-series
#14
Jonathon S Schofield, Katherine R Schoepp, Heather E Williams, Jason P Carey, Paul D Marasco, Jacqueline S Hebert
One of the most important factors in successful upper limb prostheses is the socket design. Sockets must be individually fabricated to arrive at a geometry that suits the user's morphology and appropriately distributes the pressures associated with prosthetic use across the residual limb. In higher levels of amputation, such as transhumeral, this challenge is amplified as prosthetic weight and the physical demands placed on the residual limb are heightened. Yet, in the upper limb, socket fabrication is largely driven by heuristic practices...
2017: PloS One
https://www.readbyqxmd.com/read/28549964/a-strange-collection-after-surgery-for-an-aneurysm-of-the-popliteal-artery
#15
Gian Franco Veraldi, Luca Mezzetto, Roberta La Mendola, Paolo Criscenti, Marco Macrì, Albino Eccher
The popliteal fossa is the site of several diseases that may be similar in the clinical setting but very different in aetiology, treatment and prognosis. The contemporary presentation of more than one of these conditions is a rare though potentially fatal combination that may lead to a delay in the diagnosis and therapeutic approach. In this report we describe the case of a patient that presented at our Vascular Department for persistent pain and severe swelling of the right popliteal fossa eight months after the surgical treatment of a symptomatic popliteal aneurysm by mean of a dacron prosthetic graft...
May 23, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28541915/embedded-system-for-prosthetic-control-using-implanted-neuromuscular-interfaces-accessed-via-an-osseointegrated-implant
#16
Enzo Mastinu, Pascal Doguet, Yohan Botquin, Bo Hakansson, Max Ortiz-Catalan
Despite the technological progress in robotics achieved in the last decades, prosthetic limbs still lack functionality, reliability, and comfort. Recently, an implanted neuromusculoskeletal interface built upon osseointegration was developed and tested in humans, namely the Osseointegrated Human-Machine Gateway. Here, we present an embedded system to exploit the advantages of this technology. Our artificial limb controller allows for bioelectric signals acquisition, processing, decoding of motor intent, prosthetic control, and sensory feedback...
May 23, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28533599/the-effect-of-segmental-weight-of-prosthesis-on-hemodynamic-responses-and-energy-expenditure-of-lower-extremity-amputees
#17
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/28532464/neurorehabilitation-in-upper-limb-amputation-understanding-how-neurophysiological-changes-can-affect-functional-rehabilitation
#18
REVIEW
Lewis A Wheaton
BACKGROUND: Significant advances have been made in developing new prosthetic technologies with the goal of restoring function to persons that suffer partial or complete loss of the upper limb. Despite these technological advances, many challenges remain in understanding barriers in patient adoption of technology, and what critical factors should be of focus in prosthetics development from a motor control perspective. This points to a potential opportunity to improve our understanding of amputation using neurophysiology and plasticity, and integrate this knowledge into the development of prosthetics technology in novel ways...
May 22, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28532184/a-review-of-invasive-and-non-invasive-sensory-feedback-in-upper-limb-prostheses
#19
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...
June 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28523276/improving-the-robustness-of-real-time-myoelectric-pattern-recognition-against-arm-position-changes-in-transradial-amputees
#20
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
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