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https://www.readbyqxmd.com/read/29126375/a-clinical-survey-about-commercial-games-in-lower-limb-prosthetic-rehabilitation
#1
Bita Imam, William C Miller, Heather C Finlayson, Janice J Eng, Tal Jarus
BACKGROUND: Despite the popularity of commercial games in lower limb prosthetic rehabilitation, data about their prevalence of use as well as therapists' perspectives about these games are still lacking. OBJECTIVES: To learn about the prevalence of use of commercial games in lower limb prosthetic rehabilitation and therapists' perspectives about these games. STUDY DESIGN: Cross-sectional. METHODS: An online survey was sent to physical and occupational therapists across prosthetic rehabilitation facilities in Canada...
November 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/29119728/a-framework-for-designing-patient-specific-bioprosthetic-heart-valves-using-immersogeometric-fluid-structure-interaction-analysis
#2
Fei Xu, Simone Morganti, Rana Zakerzadeh, David Kamensky, Ferdinando Auricchio, Alessandro Reali, Thomas J R Hughes, Michael S Sacks, Ming-Chen Hsu
Numerous studies have suggested that medical image derived computational mechanics models could be developed to reduce mortality and morbidity due to cardiovascular diseases by allowing for patient-specific surgical planning and customized medical device design. In this work, we present a novel framework for designing prosthetic heart valves using a parametric design platform and immersogeometric fluid-structure interaction (FSI) analysis. We parameterize the leaflet geometry using several key design parameters...
November 9, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/29118202/bayesian-optimal-adaptation-explains-age-related-human-sensorimotor-changes
#3
Faisal Karmali, Gregory T Whitman, Richard F Lewis
The brain uses information from different sensory systems to guide motor behavior, and aging is associated with a simultaneous decline in the quality of sensory information provided to the brain and a deterioration in motor control. Correlations between age-dependent decline in sensory anatomical structures and behavior have been demonstrated, and it has recently been suggested that a Bayesian framework could explain these relationships. Here we show that age-dependent changes in a human sensorimotor reflex, the vestibulo-ocular reflex, are explained by a Bayesian optimal adaptation in the brain occurring in response to death of motion-sensing hair cells...
November 8, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29114332/molar-uprighting-a-considerable-and-safe-decision-to-avoid-prosthetic-treatment
#4
Taísa Boamorte Raveli, Dirceu Barnabé Raveli, Kelei Cristina de Mathias Almeida, Ary Dos Santos Pinto
Background: Tipped lower molar over edentulous space is very common in orthodontics practice when adults seek treatment. The segmented arch technique features a predictable force system that provides a controlled release of force that can produce light and continuous tooth movement. Case Description: A female adult patient, who lost a permanent lower first molar, needed correction of the position of her permanent first molar place. Instead of making space for rehabilitation, it was closed after second molar uprighting and a balanced interdigitation was created without prosthetics...
2017: Open Dentistry Journal
https://www.readbyqxmd.com/read/29083348/cementless-knee-arthroplasty
#5
Lorenzo Ponziani, Francesco Di Caprio, Renato Meringolo
Total knee replacement is a common treatment for advanced knee osteoarthritis. The most common and widespread method is cemented arthroplasty. As in the prosthetic hip a gradual transition from cemented to uncemented fixation techniques occurred over time, increasing interest is growing also around cementless knee fixation, with the theoretical advantages of preserving the bone stock and obtaining a biological fixation avoiding cement fragmentation. On the basis of the actual knowledge, the uncemented knee prosthesis represents an interesting alternative especially for the patient under 65 years of age, with viable bone quality, in which a biological bone-prosthesis fixation is desirable, while avoiding the drawbacks of cement fragmentation and of the possible future revision of a cemented implant...
October 18, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29064920/what-s-new-in-acellular-dermal-matrix-and-soft-tissue-support-for-prosthetic-breast-reconstruction
#6
REVIEW
John Y S Kim, Alexei S Mlodinow
Of the nearly 90,000 implant-based breast reconstructions performed in the United States, the majority use internal soft-tissue support. Aesthetically, these constructs may allow for better positioning of prosthesis, improve lower pole expansion, and increase projection. They may have particular utility in direct-to-implant, nipple-sparing mastectomies, and prepectoral reconstructions. In recent years, new permutations of acellular dermal matrices have evolved with diverse shapes, sizes, form-factor innovations, and processing characteristics...
November 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29062019/myoelectric-pattern-recognition-outperforms-direct-control-for-transhumeral-amputees-with-targeted-muscle-reinnervation-a-randomized-clinical-trial
#7
Levi J Hargrove, Laura A Miller, Kristi Turner, Todd A Kuiken
Recently commercialized powered prosthetic arm systems hold great potential in restoring function for people with upper-limb loss. However, effective use of such devices remains limited by conventional (direct) control methods, which rely on electromyographic signals produced from a limited set of muscles. Targeted Muscle Reinnervation (TMR) is a nerve transfer procedure that creates additional recording sites for myoelectric prosthesis control. The effects of TMR may be enhanced when paired with pattern recognition technology...
October 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29045310/risk-of-stroke-after-transcatheter-prosthetic-aortic-valve-implant-with-aortic-bioprosthesis-subclinical-thrombosis-and-possible-therapeutic-implications
#8
Giuseppe Di Pasquale, Gloria V Coutsoumbas, Silvia Zagnoni
: Many factors could increase the risk of stroke after transcatheter prosthetic aortic valve implant, mainly related to the procedure itself, or to the type of valvular prosthesis, or to the presence of atrial fibrillation. There is a wide variability in the antithrombotic treatment utilized in clinical practice, as far as the choice of drugs (anticoagulant, single or dual antiplatelet treatment), and its optimal duration. The most popular therapeutic strategy, also recommended by the Scientific Societies, is dual antiplatelet (aspirin and clopidogrel) for the first 3-6 months then switching to single antiplatelet (usually aspirin), limiting oral anticoagulant therapy only to those patients with other primary indication to the treatment...
October 16, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28975421/maxillary-zygomatic-hexagonal-implant-system-mzh-system-for-severe-resorption-a-new-technique
#9
Muñoz Ruben, Golaszewski Jose, Diaz Alvaro, Speranza Grace
INTRODUCTION: The biomechanical demands of the severely resorbed maxilla have prompted the search for alternative points of anchorage for zygomatic implants that allows stabilizing a prosthesis in young patients (30 years old or more) for restitution of function and form. The purpose of this study is to describe the protocol of zygomatic hexagonal implants in patients with severe maxillary bone resorption. MATERIALS AND METHODS: Ten patients with severe maxillary resorption were treated with hexagonal implants system, they were evaluated at the preoperative and the postoperative periods for a minimal of 24 months, and the evaluation was clinical and trough conventional radiographs and CT scans...
December 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28974119/frontal-plane-pelvis-and-hip-kinematics-of-transfemoral-amputee-gait-effect-of-a-prosthetic-foot-with-active-ankle-dorsiflexion-and-individualized-training-a-case-study
#10
Anna Armannsdottir, Roy Tranberg, Gudfinna Halldorsdottir, Kristin Briem
Following a transfemoral amputation (TFA), numerous changes in movement patterns during gait can occur. Frontal plane hip and pelvis compensatory strategies are recognized among individuals with a TFA, some thought to aid in safe foot clearance during the swing phase of gait. The aim of this case study was to evaluate the effect of an active ankle dorsiflexion provided by a microprocessor-controlled prosthetic foot, as well as the effect of individualized training on these parameters. In this case study, a 42-year-old male underwent 3 D gait analysis...
October 3, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28946723/selection-of-implants-in-unilateral-prosthetic-breast-reconstruction-and-contralateral-augmentation
#11
Soo Jung Kim, Seung Yong Song, Dae Hyun Lew, Dong Won Lee
BACKGROUND: In breast reconstruction using implants after unilateral mastectomy, it is challenging to create a natural, ptotic contour, and asymmetry is a potential drawback. To achieve breast symmetry and an ideal shape for both breasts, we performed contralateral augmentation in patients undergoing breast reconstruction with implants. METHODS: Patients underwent unilateral mastectomy and 2-stage reconstruction. During the second stage of the procedure, contralateral augmentation mammoplasty was performed...
September 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/28937598/the-effect-of-rankl-opg-balance-on-reducing-implant-complications
#12
REVIEW
Elizabeth R Kapasa, Peter V Giannoudis, Xiaodong Jia, Paul V Hatton, Xuebin B Yang
Despite the phenomenal success of implants particularly in the realms of dentistry and orthopaedics, there are still challenges to overcome. The failure of implants resulting from infection, prosthetic loosening, and non-union continue to be the most notorious examples. The cascade of fracture healing and bone repair, especially with the presence of an implant, is complex because it involves a multifaceted immune response alongside the intricate process of bone formation and remodelling. Bone loss is a serious clinical problem that is frequently accompanied by chronic inflammation, illustrating that there is a convoluted relationship between inflammation and bone erosion...
September 22, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28932311/differences-between-subjective-balanced-occlusion-and-measurements-reported-with-t-scan-iii
#13
Zana Lila-Krasniqi, Kujtim Shala, Teuta Pustina Krasniqi, Teuta Bicaj, Enis Ahmedi, Linda Dula, Arlinda Tmava Dragusha, Ljuben Guguvcevski
BACKGROUND: The aetiology of Temporomandibular disorder is multifactorial, and numerous studies have addressed that occlusion may be of great importance in the pathogenesis of Temporomandibular disorder. AIM: The aim of this study is to determine if any direct relationship exists between balanced occlusion and Temporomandibular disorder and to evaluate the differences between subjective balanced occlusion and measurements reported with T-scan III electronic system...
August 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28888523/mechanical-alignment-technique-for-tka-are-there-intrinsic-technical-limitations
#14
C Rivière, F Iranpour, E Auvinet, A Aframian, K Asare, S Harris, J Cobb, S Parratte
BACKGROUND: Mechanically aligned (MA) total knee arthroplasty (TKA) is affected by disappointing functional outcomes in spite of the recent improvements in surgical precision and implant designs. This might suggest the existence of intrinsic technical limitations. Our study aims to compare the prosthetic and native trochlear articular surfaces and to estimate the extent of collateral ligament imbalance, which is technically uncorrectable by collateral ligament release when TKA implants are mechanically aligned...
September 6, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28869812/the-effects-of-prosthetic-foot-stiffness-on-transtibial-amputee-walking-mechanics-and-balance-control-during-turning
#15
Courtney E Shell, Ava D Segal, Glenn K Klute, Richard R Neptune
BACKGROUND: Little evidence exists regarding how prosthesis design characteristics affect performance in tasks that challenge mediolateral balance such as turning. This study assesses the influence of prosthetic foot stiffness on amputee walking mechanics and balance control during a continuous turning task. METHODS: Three-dimensional kinematic and kinetic data were collected from eight unilateral transtibial amputees as they walked overground at self-selected speed clockwise and counterclockwise around a 1-meter circle and along a straight line...
August 15, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28862042/the-component-timed-up-and-go-test-the-utility-and-psychometric-properties-of-using-a-mobile-application-to-determine-prosthetic-mobility-in-people-with-lower-limb-amputations
#16
Sheila M Clemens, Robert S Gailey, Christopher L Bennett, Paul F Pasquina, Neva J Kirk-Sanchez, Ignacio A Gaunaurd
OBJECTIVE: Using a custom mobile application to evaluate the reliability and validity of the Component Timed-Up-and-Go test to assess prosthetic mobility in people with lower limb amputation. DESIGN: Cross-sectional design. SETTING: National conference for people with limb loss. SUBJECTS: A total of 118 people with non-vascular cause of lower limb amputation participated. Subjects had a mean age of 48 (±13.7) years and were an average of 10 years post amputation...
August 1, 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28842365/spinal-deformity-changes-in-children-with-long-term-vertical-expandable-prosthetic-titanium-rib-veptr-treatment
#17
Andrea S Gantner, Lena Braunschweig, Konstantinos Tsaknakis, Heiko M Lorenz, Anna K Hell
BACKGROUND CONTEXT: In several studies, vertical expandable prosthetic titanium rib (VEPTR) implants have shown good scoliosis control in children with the longest reported follow-up (f/u) of 3.6 years. For growing rods, recent studies suggest a decreased efficiency of correction starting just after that time. To our knowledge, no long-term results of children with VEPTR treatment are available. PURPOSE: To evaluate spinal deformity in scoliotic children and to investigate correction potential of VEPTR implants at several time points of treatment, particularly after long-term f/u...
August 22, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28814050/segmental-contributions-to-sagittal-plane-whole-body-angular-momentum-when-using-powered-compared-to-passive-ankle-foot-prostheses-on-ramps
#18
Nathaniel T Pickle, Anne K Silverman, Jason M Wilken, Nicholas P Fey
Understanding the effects of an assistive device on dynamic balance is crucial, particularly for robotic leg prostheses. Analyses of dynamic balance commonly evaluate the range of whole-body angular momentum (H). However, the contributions of individual body segments to overall H throughout gait may yield futher insights, specifically for people with transtibial amputation using powered prostheses. We evaluated segment contributions to H using Statistical Parametric Mapping to assess the effects of prosthesis type (powered vs passive) and ramp angle on segmental coordination...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28727237/pre-hydrated-sterile-acellular-dermal-matrix-allograft-in-breast-reconstruction-review-of-a-single-unit-s-experience
#19
Justin James, Brigid Corrigan, Christobel Saunders
BACKGROUND: The acellular dermal matrix (Flex HD) (FHD) became available for use in Western Australia in 2014 to aid prosthetic breast reconstruction and this descriptive study aims to review and discuss a single institution's experience since its introduction. METHODS: By retrospective case note, review data were collected for all patients who underwent prosthetic breast reconstruction with the aid of FHD between January 2014 and August 2015 in our institution...
July 20, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28704685/dynamic-balance-changes-within-three-weeks-of-fitting-a-new-prosthetic-foot-component
#20
Jenny A Kent, Nicholas Stergiou, Shane R Wurdeman
Balance during walking is of high importance to prosthesis users and may affect walking during baseline observation and evaluation. The aim of this study was to determine whether changes in walking balance occurred during an adaptation period following the fitting of a new prosthetic component. Margin of stability in the medial-lateral direction (MOSML) and an anterior instability margin (AIM) were used to quantify the dynamic balance of 21 unilateral transtibial amputees during overground walking. Participants trialled two prosthetic feet presenting contrasting movement/balance constraints; a Higher Activity foot similar to that of their own prosthesis, and a Lower Activity foot...
October 2017: Gait & Posture
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