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https://www.readbyqxmd.com/read/27912753/radiographic-evaluation-of-early-periprosthetic-acetabular-bone-contrast-and-prosthetic-head-acetabular-coverage-after-uncemented-and-cemented-total-hip-prosthesis-in-dogs
#1
Ayman A Mostafa, Karin Lucas, Ingo Nolte, Patrick Wefstaedt
BACKGROUND: Coxofemoral osteoarthritis is a chronic, disabling condition affecting people and dogs, with THA providing an excellent return to function in severely affected joints. The principal role of THA is to restore an adequate range of motion to the hip joint while transferring load from the acetabulum in order to improve the survival of the implant and enhance the limb function in the short and long terms. The objectives of the study reported here were, therefore, to radiographically evaluate periprosthetic acetabular bone GV and to assess prosthetic head acetabular coverage after 4 months of uncemented and cemented THA in dogs...
December 3, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27909861/surgical-reconstruction-for-fibular-hemimelia
#2
REVIEW
Dror Paley
Fibular hemimelia presents with foot deformity and leg length discrepancy. Previous classifications have focused on the degree of fibular deficiency rather than the type of foot deformity. Published methods of surgical reconstruction have often failed due to residual or recurrent foot deformity. The purpose of this report is to introduce new classification and reconstruction methods. The Paley SHORDT procedure is used to stabilize the ankle when there is a hypoplastic distal fibula with a dynamic valgus deformity...
December 1, 2016: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/27909860/tibial-hemimelia-new-classification-and-reconstructive-options
#3
REVIEW
Dror Paley
Tibial hemimelia is a rare congenital lower limb deficiency presenting with a wide spectrum of associated congenital anomalies, deficiencies and duplications. Reconstructive options have been limited, and the gold standard for treatment has remained amputation with prosthetic fitting. There is now a better understanding of the genetics, etiology and pathoanatomy of tibial hemimelia. Armed with this knowledge, I present here a new classification to guide treatment and prognosis and then discuss new treatment strategies and techniques for limb reconstruction based on this new classification scheme...
December 1, 2016: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/27909643/source-control-and-graft-preservation-using-negative-pressure-wound-therapy-with-antibiotic-instillation-a-case-report
#4
Victoria Gilbert, Timothy Kelly, Robert Grossi
Negative pressure wound therapy (NPWT) is widely used to treat many types of complex wounds, and the advent of the instillation and dwell time (NPWTi-d) technique has enhanced this system with the addition of automated treatment with topical solutions. In the field of vascular surgery, NPWT is utilized to help close wounds over underlying grafts; however keeping these wounds free of infection and avoiding large reoperation when infection occurs remains a challenge. In this case report we present a patient who required acute intervention for limb ischemia, with a large wound created in the groin for anastomosis of a prosthetic graft bypass...
October 31, 2016: Curēus
https://www.readbyqxmd.com/read/27891243/a-comprehensive-musculoskeletal-and-peripheral-nervous-system-assessment-of-war-related-bilateral-upper-extremity-amputees
#5
Mostafa Allami, Batool Mousavi, Mehdi Masoumi, Ehsan Modirian, Hadi Shojaei, Fatemeh Mirsalimi, Maryam Hosseini, Pirouz Pirouzi
BACKGROUND: Upper limb amputations are one of the unpleasant war injuries that armed forces are exposed to frequently. The present study aimed to assess the musculoskeletal and peripheral nervous systems in Iraq-Iran war veterans with bilateral upper extremity amputation. METHODS: The study consisted of taking a history and clinical examinations including demographic data, presence and location of pain, level of amputation, passive and active ranges of movement of the joints across the upper and lower extremities and spine, manual palpation, neurological examination, blood circulation pulses and issues related to a prosthetic limb...
2016: Military Medical Research
https://www.readbyqxmd.com/read/27888261/fluctuating-residual-limb-volume-accommodated-with-an-adjustable-modular-socket-design-a-novel-case-report
#6
Kay Mitton, Jai Kulkarni, Kenneth William Dunn, Anthony Hoang Ung
BACKGROUND: This novel case report describes the problems of prescribing a prosthetic socket in a left transfemoral amputee secondary to chronic patellofemoral instability compounded by complex regional pain syndrome. CASE DESCRIPTION AND METHODS: Following the amputation, complex regional pain syndrome symptoms recurred in the residual limb, presenting mainly with oedema. Due to extreme daily volume fluctuations of the residual limb, a conventional, laminated thermoplastic socket fitting was not feasible...
November 24, 2016: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/27882044/the-importance-of-rehabilitation-concerning-upper-extremity-amputees-a-systematic-review
#7
REVIEW
Kardem Soyer, Banu Unver, Seval Tamer, Ozlem Ulger
OBJECTIVE: To evaluate and point out the importance of prosthetic rehabilitation of upper extremity. METHODS: A systematic literature search was performed to identify studies concerning prosthetic rehabilitation in upper extremity. The PRISMA Statement 2009 was used to establish the study and the methodological quality was assessed. RESULTS: The literature search identified 620 studies. Of these 620, 9 studies fulfilled the inclusion criteria and were included for data extraction...
September 2016: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/27879592/reinnervated-split-muscle-technique-for-creating-additional-myoelectric-sites-in-an-animal-model
#8
Maria Florencia Deslivia, Hyun-Joo Lee, Rizki Fajar Zulkarnain, Bin Zhu, Arnold Adikrishna, In-Ho Jeon, Keehoon Kim
BACKGROUND: This study proposes a novel reinnervated split-muscle operation to create additional myoelectric sites as sources of command signals of myoelectric prostheses for enhanced dexterous hand-to-wrist motions. The aim of this study was to investigate the postprocedure electromyographic properties of the muscles as distinct myoelectric sites in a rat model. METHODS: The reinnervated split-muscle group (n = 6) had the gastrocnemius muscle separated along its longitudinal axis and nerves transferred to each new muscle (peroneal nerve to lateral muscle head and tibial to medial one); the non-split-muscle group (n = 6) only had nerve transfers with its muscle intact...
December 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27865845/temporal-spatial-and-metabolic-measures-of-walking-in-highly-functional-individuals-with-lower-limb-amputations
#9
Hannah L Jarvis, Alex N Bennett, Martin Twiste, Rhodri D Phillip, John Etherington, Richard Baker
OBJECTIVE: The aim of this descriptive exploratory study is to record the temporal spatial parameters and metabolic energy expenditure during walking of individuals with amputation, walking with advanced prostheses and following completion of comprehensive rehabilitation, to able-bodied controls. DESIGN: Cross-sectional SETTING: Multi-disciplinary comprehensive rehabilitation centre PARTICIPANTS: Thirty severely injured United Kingdom military personnel with amputation and subsequent completion of their rehabilitation programme (10 unilateral trans-tibial, 10 unilateral trans-femoral, and 10 bilateral trans-femoral) were compared to (and of similar age, height and mass (p >0...
November 16, 2016: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27865091/analysis-of-voluntary-opening-ottobock-hook-and-hosmer-hook-for-upper-limb-prosthetics-a-preliminary-study
#10
Nur Afiqah Hashim, Nasrul Anuar Bin Abd Razak, Hossein Gholizadeh, Noor Azuan Abu Osman
There are a number of prosthetic terminal devices which offer functional restoration to individuals with upper limb deficiencies. Hosmer and Ottobock are major commercial hook providers for prosthetic terminal devices. The concern of this paper is to analyse the voluntary opening (VO) Ottobock model 10A18 and Hosmer model 99P hooks (one band) during opening operation and to find out favourable features in the design. Two tests were conducted to analyse the performance of both hooks. The first test used a simple bench tool to investigate cable excursion and hook opening angle and the second test used force sensor to find out the force supplied at a different hook opening angle...
November 19, 2016: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/27849521/low-cost-methodology-for-skin-strain-measurement-of-a-flexed-biological-limb
#11
Bevin Lin, Kevin M Moerman, Connor G McMahan, Kenneth A Pasch, Hugh M Herr
OBJECTIVE: The purpose of this manuscript is to compute skin strain data from a flexed biological limb, using portable, inexpensive, and easily-available resources. METHODS: We apply and evaluate this approach on a person with bi-lateral transtibial amputations, imaging left and right residual limbs in extended and flexed knee postures. We map 3D deformations to a flexed biological limb using freeware and a simple point-and-shoot camera. Mean principal strain, maximum shear strain, as well as lines of maximum, minimum, and non-extension are computed from 3D digital models to inform directional mappings of the strain field for an unloaded residual limb...
November 10, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27849459/the-prevalence-of-gait-deviations-in-individuals-with-transtibial-amputation
#12
Christopher A Rábago, Jason M Wilken
Individuals with a transtibial amputation (TTA) are at increased risk for developing secondary musculoskeletal disorders as a result of multiple gait deviations. These deviations are primarily characterized using group mean comparisons, which do not establish if deviations are prevalent, of large magnitude, or both. In contrast, use of normative reference ranges and prevalence specifically identifies the percentage of individuals outside of a predefined acceptable range. The purpose of this study was to identify and characterize gait deviations in service members with unilateral TTA using group mean comparisons and normative reference ranges (able-bodied mean ± 2 SD)...
November 2016: Military Medicine
https://www.readbyqxmd.com/read/27836575/energy-flow-analysis-of-amputee-walking-shows-a-proximally-directed-transfer-of-energy-in-intact-limbs-compared-to-a-distally-directed-transfer-in-prosthetic-limbs-at-push-off
#13
R A Weinert-Aplin, D Howard, M Twiste, H L Jarvis, A N Bennett, R J Baker
Reduced capacity and increased metabolic cost of walking occurs in amputees, despite advances in prosthetic componentry. Joint powers can quantify deficiencies in prosthetic gait, but do not reveal how energy is exchanged between limb segments. This study aimed to quantify these energy exchanges during amputee walking. Optical motion and forceplate data collected during walking at a self-selected speed for cohorts of 10 controls, 10 unilateral trans-tibial, 10 unilateral trans-femoral and 10 bilateral trans-femoral amputees were used to determine the energy exchanges between lower limb segments...
November 8, 2016: Medical Engineering & Physics
https://www.readbyqxmd.com/read/27833537/forward-prediction-in-the-posterior-parietal-cortex-and-dynamic-brain-machine-interface
#14
He Cui
While remarkable progress has been made in brain-machine interfaces (BMIs) over the past two decades, it is still difficult to utilize neural signals to drive artificial actuators to produce predictive movements in response to dynamic stimuli. In contrast to naturalistic limb movements largely based on forward planning, brain-controlled neuroprosthetics mainly rely on feedback without prior trajectory formation. As an important sensorimotor interface integrating multisensory inputs and efference copy, the posterior parietal cortex (PPC) might play a proactive role in predictive motor control...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27832952/cross-slope-and-level-walking-strategies-during-swing-in-individuals-with-a-lower-limb-amputation
#15
Coralie Villa, Isabelle Loiret, Karine Langlois, Xavier Bonnet, François Lavaste, Pascale Fodé, Hélène Pillet
OBJECTIVE: The aim of this study was to quantitatively analyze prosthetic limb swing phase gait strategies used to adapt to cross-slopes compared to level walking. DESIGN: Cross-sectional study SETTING: Gait laboratory PARTICIPANTS: A volunteer sample of seventeen individuals with a transfemoral amputation, fifteen individuals with a transtibial amputation and seventeen able-bodied subjects. INTERVENTIONS: Participants walked on level and 6° (10%) cross slope surfaces at a self-selected walking speed...
November 7, 2016: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27826906/amputation-and-rotationplasty-in-children-with-limb-deficiencies-current-concepts
#16
REVIEW
Ralph Sakkers, Iris van Wijk
PURPOSE: Amputations and fitting surgery have a long history in children with limb deficiencies. With the current developments in limb reconstruction and new techniques in prosthetics, the indications for amputation and fitting surgery might have shifted, but still have a very important role in creating high functional performance, optimal participation and quality of life. The purpose of this current concepts article is to give an overview of the indications, dilemmas and technical considerations in the decision-making for amputation and fitting surgery...
November 8, 2016: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/27826195/roles-and-challenges-of-the-multidisciplinary-team-involved-in-prosthetic-rehabilitation-in-a-rural-district-in-south-africa
#17
Liezel Ennion, Anthea Rhoda
BACKGROUND: Major lower limb amputations result in a significant sense of loss, psychological stress, and decrease in function and overall quality of life for the amputee. The holistic, patient-centered prosthetic rehabilitation of an amputee requires input from a team of dedicated health professionals from different disciplines commonly referred to as a multidisciplinary team (MDT). MDT rehabilitation is considered crucial in the reintegration of the amputee into the community, as well as for providing psychological support after limb loss...
2016: Journal of Multidisciplinary Healthcare
https://www.readbyqxmd.com/read/27815182/key-considerations-in-designing-a-somatosensory-neuroprosthesis
#18
Benoit P Delhaye, Hannes P Saal, Sliman J Bensmaia
In recent years, a consensus has emerged that somatosensory feedback needs to be provided for upper limb neuroprostheses to be useful. An increasingly promising approach to sensory restoration is to electrically stimulate neurons along the somatosensory neuraxis to convey information about the state of the prosthetic limb and about contact with objects. To date, efforts towards artificial sensory feedback have consisted mainly of demonstrating that some sensory information could be conveyed using a small number of stimulation patterns, generally delivered through single electrodes...
November 1, 2016: Journal of Physiology, Paris
https://www.readbyqxmd.com/read/27807349/induced-sensorimotor-brain-plasticity-controls-pain-in-phantom-limb-patients
#19
Takufumi Yanagisawa, Ryohei Fukuma, Ben Seymour, Koichi Hosomi, Haruhiko Kishima, Takeshi Shimizu, Hiroshi Yokoi, Masayuki Hirata, Toshiki Yoshimine, Yukiyasu Kamitani, Youichi Saitoh
The cause of pain in a phantom limb after partial or complete deafferentation is an important problem. A popular but increasingly controversial theory is that it results from maladaptive reorganization of the sensorimotor cortex, suggesting that experimental induction of further reorganization should affect the pain, especially if it results in functional restoration. Here we use a brain-machine interface (BMI) based on real-time magnetoencephalography signals to reconstruct affected hand movements with a robotic hand...
October 27, 2016: Nature Communications
https://www.readbyqxmd.com/read/27799908/assessment-of-myoelectric-controller-performance-and-kinematic-behavior-of-a-novel-soft-synergy-inspired-robotic-hand-for-prosthetic-applications
#20
Simone Fani, Matteo Bianchi, Sonal Jain, José Simões Pimenta Neto, Scott Boege, Giorgio Grioli, Antonio Bicchi, Marco Santello
Myoelectric artificial limbs can significantly advance the state of the art in prosthetics, since they can be used to control mechatronic devices through muscular activity in a way that mimics how the subjects used to activate their muscles before limb loss. However, surveys indicate that dissatisfaction with the functionality of terminal devices underlies the widespread abandonment of prostheses. We believe that one key factor to improve acceptability of prosthetic devices is to attain human likeness of prosthesis movements, a goal which is being pursued by research on social and human-robot interactions...
2016: Frontiers in Neurorobotics
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