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https://www.readbyqxmd.com/read/28940152/osteomyelitis-risk-in-patients-with-transfemoral-amputations-treated-with-osseointegration-prostheses
#1
Jonatan Tillander, Kerstin Hagberg, Örjan Berlin, Lars Hagberg, Rickard Brånemark
BACKGROUND: Percutaneous anchoring of femoral amputation prostheses using osseointegrating titanium implants has been in use for more than 25 years. The method offers considerable advantages in daily life compared with conventional socket prostheses, however long-term success might be jeopardized by implant-associated infection, especially osteomyelitis, but the long-term risk of this complication is unknown. QUESTIONS/PURPOSES: (1) To quantify the risk of osteomyelitis, (2) to characterize the clinical effect of osteomyelitis (including risk of implant extraction and impairments to function), and (3) to determine whether common patient factors (age, sex, body weight, diabetes, and implant component replacements) are associated with osteomyelitis in patients with transfemoral amputations treated with osseointegrated titanium implants...
September 22, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28927643/a-combined-kinematic-and-kinetic-analysis-at-the-residuum-socket-interface-of-a-knee-disarticulation-amputee
#2
Jinghua Tang, Michael McGrath, Nick Hale, Liudi Jiang, Dan Bader, Piotr Laszczak, David Moser, Saeed Zahedi
The bespoke interface between a lower limb residuum and a prosthetic socket is critical for an amputee's comfort and overall rehabilitation outcomes. Analysis of interface kinematics and kinetics is important to gain full understanding of the interface biomechanics, which could aid clinical socket fit, rehabilitation and amputee care. This pilot study aims to investigate the dynamic correlation between kinematic movement and kinetic stresses at the interface during walking tests on different terrains. One male, knee disarticulation amputee participated in the study...
September 15, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28926593/target-directed-motor-imagery-of-the-lower-limb-enhances-event-related-desynchronization
#3
Kosuke Kitahara, Yoshikatsu Hayashi, Shiro Yano, Toshiyuki Kondo
Event-related desynchronization/synchronization (ERD/S) is an electroencephalogram (EEG) feature widely used as control signals for Brain-Computer Interfaces (BCIs). Nevertheless, the underlying neural mechanisms and functions of ERD/S are largely unknown, thus investigating them is crucial to improve the reliability of ERD/S-based BCIs. This study aimed to identify Motor Imagery (MI) conditions that enhance ERD/S. We investigated following three questions: 1) whether target-directed MI affects ERD/S, 2) whether MI with sound imagery affects ERD/S, and 3) whether ERD/S has a body part dependency of MI...
2017: PloS One
https://www.readbyqxmd.com/read/28914583/the-deka-hand-a-multifunction-prosthetic-terminal-device-patterns-of-grip-usage-at-home
#4
Linda Resnik, Frantzy Acluche, Matthew Borgia
BACKGROUND: Research is needed to understand how upper limb prosthesis users take advantage of multiple grip options. OBJECTIVES: To quantify usage of DEKA hand grip patterns during home use and compare patterns of usage at home to test sessions. STUDY DESIGN: Observational study design. METHODS: Data were collected from 21 subjects. Engineering data on grip were downloaded at various intervals. Proportion of time in each grip was calculated for the first 4 weeks of home use, later months, and test sessions (testing use) and compared statistically across intervals...
September 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28904639/a-comparison-of-functional-outcome-between-amputation-and-extension-prosthesis-in-the-treatment-of-congenital-absence-of-the-fibula-with-severe-limb-deformity
#5
P Calder, S Shaw, A Roberts, S Tennant, I Sedki, R Hanspal, D Eastwood
PURPOSE: Complete fibula absence often presents with significant lower-limb deformity. Parental counselling regarding management is paramount in achieving the optimum functional outcome. Amputation offers a single surgical event with minimal complications. This study compares outcomes with an amputation protocol to those using an extension prosthesis. METHOD: Thirty-two patients were identified. Nine patients (2 males, 7 females; median age at assessment of 23...
August 1, 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28900572/return-to-running-following-a-knee-disarticulation-amputation-a-case-report
#6
Angela R Diebal-Lee, Robert S Kuenzi, Christopher A Rábago
BACKGROUND AND PURPOSE: The evolution of running-specific prostheses has empowered athletes with lower extremity amputations to run farther and faster than previously thought possible; but running with proper mechanics is still paramount to an injury-free, active lifestyle. The purpose of this case report was to describe the successful alteration of intact limb mechanics from a Rearfoot Striking (RFS) to a Non-Rearfoot Striking (NRFS) pattern in an individual with a knee disarticulation amputation, the associated reduction in Average Vertical Loading Rate (AVLR), and the improvement in functional performance following the intervention...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28890062/national-utilization-and-outcomes-of-redo-lower-extremity-bypass-vs-endovascular-intervention-after-previous-failed-bypass-redo-lower-extremity-bypass-superior-to-endovascular-intervention
#7
J Hunter Mehaffey, Alexander Shannon, Robert B Hawkins, Anna Fashandi, Margret C Tracci, Irving L Kron, Gilbert R Upchurch, William P Robinson
BACKGROUND: Redo Lower extremity bypass (LEB) and infrainguinal endovascular intervention (IEI) are options to treat critical limb ischemia after a failed prior lower extremity bypass but the utilization and outcomes of each are poorly described. The purpose of this study was to compare 30-day Major Adverse Limb Events (MALE) and Major Adverse Cardiovascular Events (MACE) after LEB and IEI in patients with a failed prior ipsilateral LEB and determine risk factors for each composite outcome...
September 7, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28890027/cryopreserved-cadaveric-arterial-allograft-for-arterial-reconstruction-in-patients-with-prosthetic-infection
#8
Anne Lejay, Charline Delay, Elie Girsowicz, Bettina Chenesseau, Emilie Bonnin, Mohamed-Zied Ghariani, Fabien Thaveau, Yannick Georg, Bernard Geny, Nabil Chakfe
OBJECTIVE: The aim of this study was to report outcomes of cryopreserved arterial allografts used as a vascular substitute in the setting of prosthetic material infection. METHODS: A retrospective analysis of prospectively collected data was conducted including all consecutive interventions performed with cryopreserved arterial allografts used for vascular reconstruction in the setting of prosthetic material infection between January 2005 and December 2014. Five year outcomes included allograft related re-interventions, survival, primary patency, and limb salvage rates...
September 7, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28886154/validity-and-reliability-of-a-novel-3d-scanner-for-assessment-of-the-shape-and-volume-of-amputees-residual-limb-models
#9
Elena Seminati, David Canepa Talamas, Matthew Young, Martin Twiste, Vimal Dhokia, James L J Bilzon
BACKGROUND: Objective assessment methods to monitor residual limb volume following lower-limb amputation are required to enhance practitioner-led prosthetic fitting. Computer aided systems, including 3D scanners, present numerous advantages and the recent Artec Eva scanner, based on laser free technology, could potentially be an effective solution for monitoring residual limb volumes. PURPOSE: The aim of this study was to assess the validity and reliability of the Artec Eva scanner (practical measurement) against a high precision laser 3D scanner (criterion measurement) for the determination of residual limb model shape and volume...
2017: PloS One
https://www.readbyqxmd.com/read/28880183/gaussian-process-autoregression-for-simultaneous-proportional-multi-modal-prosthetic-control-with-natural-hand-kinematics
#10
Michele Xiloyannis, Constantinos Gavriel, Andreas A C Thomik, A Aldo Faisal
Matching the dexterity, versatility and robustness of the human hand is still an unachieved goal in bionics, robotics and neural engineering. A major limitation for hand prosthetics lies in the challenges of reliably decoding user intention from muscle signals when controlling complex robotic hands. Most of the commercially available prosthetic hands use musclerelated signals to decode a finite number of predefined motions and some offer proportional control of open/close movements of the whole hand. Here, in contrast, we aim to offer users flexible control of individual joints of their artificial hand...
August 31, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28874215/participatory-design-of-pediatric-upper-limb-prostheses-qualitative-methods-and-prototyping
#11
Tara Sims, Andy Cranny, Cheryl Metcalf, Paul Chappell, Maggie Donovan-Hall
OBJECTIVES: The study aims to develop an understanding of the views of children and adolescents, parents, and professionals on upper limb prosthetic devices to develop and improve device design. Previous research has found that children are dissatisfied with prostheses but has relied heavily on parent proxy reports and quantitative measures (such as questionnaires) to explore their views. METHODS: Thirty-four participants (eight children aged 8-15 years with upper limb difference, nine parents, eight prosthetists, and nine occupational therapists) contributed to the development of new devices through the BRIDGE methodology of participatory design, using focus groups and interviews...
September 6, 2017: International Journal of Technology Assessment in Health Care
https://www.readbyqxmd.com/read/28869812/the-effects-of-prosthetic-foot-stiffness-on-transtibial-amputee-walking-mechanics-and-balance-control-during-turning
#12
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/28866959/a-comparison-of-computerized-adaptive-testing-and-fixed-length-short-forms-for-the-prosthetic-limb-users-survey-of-mobility-plus-m-tm
#13
Dagmar Amtmann, Alyssa M Bamer, Jiseon Kim, Fraser Bocell, Hyewon Chung, Ryoungsun Park, Rana Salem, Brian J Hafner
BACKGROUND: New health status instruments can be administered by computerized adaptive test or short forms. The Prosthetic Limb Users Survey of Mobility (PLUS-M(TM)) is a self-report measure of mobility for prosthesis users with lower limb loss. This study used the PLUS-M to examine advantages and disadvantages of computerized adaptive test and short forms. OBJECTIVES: To compare scores obtained from computerized adaptive test to scores obtained from fixed-length short forms (7-item and 12-item) in order to provide guidance to researchers and clinicians on how to select the best form of administration for different uses...
September 1, 2017: Prosthetics and Orthotics International
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
#14
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/28856323/serratia-liquefaciens-infection-of-a-previously-excluded-popliteal-artery-aneurysm
#15
A Coelho, M Lobo, V Martins, R Gouveia, P Sousa, J Campos, R Augusto, N Coelho, A Canedo
INTRODUCTION: Popliteal artery aneurysms (PAAs) are rare in the general population, but they account for nearly 70% of peripheral arterial aneurysms. There are several possible surgical approaches including exclusion of the aneurysm and bypass grafting, or endoaneurysmorrhaphy and interposition of a prosthetic conduit. The outcomes following the first approach are favorable, but persistent blood flow in the aneurysm sac has been documented in up to one third of patients in the early post-operative setting...
2017: EJVES Short Rep
https://www.readbyqxmd.com/read/28854522/an-investigation-on-effects-of-amputee-s-physiological-parameters-on-maximum-pressure-developed-at-the-prosthetic-socket-interface-using-artificial-neural-network
#16
Chitresh Nayak, Amit Singh, Himanshu Chaudhary, Deepak Rajendra Unune
Technological advances in prosthetics have attracted the curiosity of researchers in monitoring design and developments of the sockets to sustain maximum pressure without any soft tissue damage, skin breakdown, and painful sores. Numerous studies have been reported in the area of pressure measurement at the limb/socket interface, though, the relation between amputee's physiological parameters and the pressure developed at the limb/socket interface is still not studied. Therefore, the purpose of this work is to investigate the effects of patient-specific physiological parameters viz...
August 1, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28844167/epidemiological-study-of-failures-of-the-jaipur-foot
#17
Ian Huber, Kristine M Fischenich, Jakob Wolynski, Brent Niese, Rachel Teater, Harlal Singh Mali, Anil Kumar Jain, Sheryl Sorby, Lisa Abrams, Tammy L Haut Donahue
OBJECTIVE: The purpose of this study was to examine effects of usage and demographics on damage to the Jaipur Foot prosthesis as well as the epidemiology and etiology of amputations performed at Santokba Durlabjhi Memorial Hospital (SDMH) in Jaipur, India. DESIGN: Total time spent standing, total time spent wearing and total distance walked were compared against severity and location of damage to the prosthesis. Time between initial fitting and follow-up visit for damaged prosthetic was also considered in this analysis...
August 26, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28842073/disarticulation-of-the-knee-analysis-of-an-extended-database-on-survival-wound-healing-and-ambulation
#18
Rachelle Nijmeijer, Henricus G J M Voesten, Joannes H B Geertzen, Pieter U Dijkstra
OBJECTIVE: This study analyzed survival of the amputee patients, wound healing, and ambulation after knee disarticulation (KD). METHODS: Between July 1989 and October 2015, 153 KDs in 138 patients were performed at Nij Smellinghe Hospital, Drachten. Data were retrieved from hospital medical records. Wound healing was analyzed using nonparametric tests. Ambulation was recorded according to the Special Interest Group Amputation Medicine Workgroup Amputation and Prosthetics mobility scale...
September 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28835186/comparison-of-propaten-heparin-bonded-vascular-graft-with-distal-anastomotic-patch-versus-autogenous-saphenous-vein-graft-in-tibial-artery-bypass
#19
Jeremy Kaisar, Aaron Chen, Mathew Cheung, Elias Kfoury, Carlos F Bechara, Peter H Lin
Introduction Heparin-bonded expanded polytetrafluoroethylene grafts (Propaten, WL Gore, Flagstaff, AZ, USA) have been shown to have superior patency compared to standard prosthetic grafts in leg bypass. This study analyzed the outcomes of Propaten grafts with distal anastomotic patch versus autogenous saphenous vein grafts in tibial artery bypass. Methods A retrospective analysis of prospective collected data was performed during a recent 15-year period. Sixty-two Propaten bypass grafts with distal anastomotic patch (Propaten group) were compared with 46 saphenous vein graft (vein group)...
January 1, 2017: Vascular
https://www.readbyqxmd.com/read/28831330/impact-of-traumatic-lower-extremity-injuries-beyond-acute-care-movement-based-considerations-for-resultant-longer-term-secondary-health-conditions
#20
REVIEW
Courtney M Butowicz, Christopher L Dearth, Brad D Hendershot
Significance: Advances in field-based trauma care, surgical techniques, and protective equipment have collectively facilitated the survival of a historically large number of service members (SMs) following combat trauma, although many sustained significant composite tissue injuries to the extremities, including limb loss (LL) and limb salvage (LS). Beyond the acute surgical and rehabilitative efforts that focus primarily on wound care and restoring mobility, traumatic LL and LS are associated with several debilitating longer term secondary health conditions (e...
August 1, 2017: Advances in Wound Care
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