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https://www.readbyqxmd.com/read/28341505/secondary-aortoenteric-erosion-followed-by-recurrent-lower-extremity-abscesses
#1
Shigeshi Ono, Yoshitomo Samejima, Susumu Watada, Toshihiro Kakefuda
A secondary aortoenteric fistula (SAEF) is a relatively rare complication of aortoiliac reconstructive surgery, often involving relatively fixed duodenal 3(rd) portion and a vascular anastomosis. We observed a 52-year-old man with a recurrent right lower leg abscess following the erosion between ipsilateral bifurcated prosthetic graft limb and non-fixed jejunum. In situ graft-sparing surgical treatment with aggressive debridement was successfully performed. A SAEF may occur even at a non-vascular anastomosis site, or in non-fixed small bowel, and may become a source of a septic embolus...
March 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28341191/-bacillus-cereus-endocarditis-and-a-probable-cutaneous-gateway
#2
S Soudet, C Becquart, F Dezoteux, K Faure, D Staumont-Salle, E Delaporte
BACKGROUND: Bacillus cereus is a ubiquitous telluric organism. B. cereus endocarditis is a rare condition seen mostly in prosthetic heart valves and among intravenous drug users. We report a new case of a patient without risk factors and with a good clinical outcome not requiring valve replacement. CASE REPORT: In October 2014, a 50-year-old woman was referred to the dermatology department of Lille University Hospital for lower-limb wounds developing 6 months earlier...
January 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28336738/single-stage-osseointegrated-reconstruction-and-rehabilitation-of-lower-limb-amputees-the-osseointegration-group-of-australia-accelerated-protocol-2-ogaap-2-for-a-prospective-cohort-study
#3
Munjed Al Muderis, William Lu, Kevin Tetsworth, Belinda Bosley, Jiao Jiao Li
INTRODUCTION: Lower limb amputations have detrimental influences on the quality of life, function and body image of the affected patients. Following amputation, prolonged rehabilitation is required for patients to be fitted with traditional socket prostheses, and many patients experience symptomatic socket-residuum interface problems which lead to reduced prosthetic use and quality of life. Osseointegration has recently emerged as a novel approach for the reconstruction of amputated limbs, which overcomes many of the socket-related problems by directly attaching the prosthesis to the skeletal residuum...
March 22, 2017: BMJ Open
https://www.readbyqxmd.com/read/28324949/muscle-synergy-analysis-in-transtibial-amputee-during-ramp-ascending-activity
#4
P Mehryar, M S Shourijeh, H F Maqbool, M Torabi, A A Dehghani-Sanij
In developed countries, the highest number of amputees are elderly with transtibial amputation. Walking on inclined surfaces is difficult for amputees due to loss of muscle volume and strength thereby transtibial amputees (TA) rely on the intact limb to maintain stability. The aim of this study was to use the concatenated non-negative matrix factorization (CNMF) technique to calculate muscle synergy components and compare the difference in muscle synergies and their associated activation profiles in the healthy and amputee groups during ramp ascending (RA) activity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28323804/transtibial-amputation-outcomes-study-taos-comparing-transtibial-amputation-with-and-without-a-tibiofibular-synostosis-ertl-procedure
#5
Michael J Bosse, Saam Morshed, Lisa Reider, William Ertl, James Toledano, Reeza Firoozabadi, Rachel B Seymour, Eben Carroll, Daniel O Scharfstein, Barbara Steverson, Ellen J MacKenzie
The optimal technique for a transtibial amputation in a young, active, and healthy patient is controversial. Proponents of the Ertl procedure (in which the cut ends of the tibia and fibula are joined with a bone bridge synostosis) argue that the residual limb is more stable which confers better prosthetic fit and improved function especially among high-performing individuals. At the same time, the Ertl procedure is associated with longer operative and healing time and may be associated with a higher complication rate compared with the standard Burgess procedure...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28322115/lower-extremity-kinematics-of-curve-sprinting-displayed-by-runners-using-a-transtibial-prosthesis
#6
Yumeng Li, Kathy J Simpson, Lee Nolan, Marilyn Miller, Benjamin Johnson
The purpose of the study was to determine if the kinematics exhibited by skilled runners wearing a unilateral, transtibial prosthesis during the curve section of a 200-m sprint race were influenced by interaction of limb-type (prosthetic limb (PROS-L) vs. nonprosthetic limb (NONPROS-L)) and curve-side (inside and outside limb relative to the centre of the curve). Step kinematics, toe clearance and knee and hip flexion/extension, hip ab/adduction for one stride of each limb were generated from video of 13 males running the curve during an international 200 m transtibial-classified competition...
March 21, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28320228/living-as-a-person-using-a-lower-limb-prosthesis-in-nepal
#7
Anna Järnhammer, Beatrice Andersson, Prakash Raj Wagle, Lina Magnusson
PURPOSE: The purpose of this study is to explore experiences of persons in Nepal using lower-limb prostheses, in relation to specific articles in the Convention on the Rights of Persons with Disabilities that consider mobility, education, health, rehabilitation, and work and employment. METHOD: Qualitative interviews were conducted with 16 persons using lower limb prostheses. Content analysis was applied to the data. RESULTS: Six themes emerged: The lower-limb prosthesis is essential for mobility and daily life; Limited mobility in challenging terrain and request for reduced pain when using prosthesis; Difficulties in finding and sustaining employment emphasized the importance of vocational training; Appreciation of comprehensive rehabilitation together with other persons with amputations, but covering related costs is a struggle; Satisfied with health care, but concerned that it creates debt and dependence upon others; and finally, Limited ability creates negative self-image and varied attitudes in other people...
March 21, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28318387/a-qualitative-study-of-the-challenges-of-providing-pre-prosthetic-rehabilitation-in-rural-south-africa
#8
Liezel Ennion, Anton Johannesson Johannesson
BACKGROUND: There is a known shortage of rehabilitation staff in rural settings and a sharp increase in the number of lower limb amputations being performed. A lack of adequate pre-prosthetic rehabilitation will result in worse physical and psychological outcomes for a person with a lower limb amputation, and they will not be eligible to be fitted with a prosthesis. OBJECTIVE: To explore therapists' experiences with providing pre-prosthetic rehabilitation in a rural setting...
March 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28316270/the-prosthetist-role-expectations-scale-development-and-initial-validation-of-a-scale-for-clinical-settings
#9
Renee L Mackenzie, Meg E Morris, Gregory Murphy, Margaret C Hodge
BACKGROUND: The role of the prosthetist has changed substantially over the past century. In the transition from 'limb-maker' to 'clinician', the expectations of prosthetics professionals have also changed. OBJECTIVES: To develop and test a new scale capable of assessing and comparing current expectations of the roles of the prosthetist. STUDY DESIGN: Scale development and validation. METHODS: A new scale was constructed in accordance with Organizational Role Theory...
March 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28293984/hip-prosthesis-in-sitting-posture-for-bilateral-transfemoral-amputee-after-burn-injury-a-case-report
#10
Yukiyo Shimizu, Hirotaka Mutsuzaki, Takayuki Maezawa, Yuji Idei, Kazuya Takao, Ryoko Takeuchi, Shinzo Onishi, Yasushi Hada, Masashi Yamazaki, Yasuyoshi Wadano
BACKGROUND: To overcome the challenges of rehabilitation of bilateral transfemoral amputees, we developed a novel "hip prosthesis in the sitting posture." Case Description and Methods: A 64-year-old male bilateral transfemoral amputee was transferred for rehabilitation 4 months following a burn injury. His wounds remained unhealed for 20 months; thus, he was unable to participate in standing training with the standard prosthetic sockets. Hip prosthesis in the sitting posture has very little friction between the sockets and residual limbs, which facilitated our patient to begin standing and walking exercises...
December 1, 2016: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28287007/validation-of-the-virtual-elevation-field-test-method-when-assessing-the-aerodynamics-of-para-cyclists-with-a-uni-lateral-trans-tibial-amputation
#11
Bryce Dyer, B Xavier Disley
Lower-limb amputees typically require some form of prosthetic limb to ride a bicycle for recreation or when competing. At elite-level racing speeds, aerodynamic drag can represent the majority of the resistance acting against a cyclists' forward motion. As a result, the reduction of such resistance is beneficial to an amputee whereby the form and function of the prosthetic limb can be optimized through engineering. To measure the performance of such limbs, field testing provides a cost-effective and context-specific method of aerodynamic drag measurement...
March 12, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28286462/systematic-review-of-studies-examining-transtibial-prosthetic-socket-pressures-with-changes-in-device-alignment
#12
REVIEW
Philip Davenport, Siamak Noroozi, Philip Sewell, Saeed Zahedi
Suitable lower-limb prosthetic sockets must provide an adequate distribution of the pressures created from standing and ambulation. A systematic search for articles reporting socket pressure changes in response to device alignment perturbation was carried out, identifying 11 studies. These were then evaluated using the American Academy of Orthotists and Prosthetists guidelines for a state-of-the-science review. Each study used a design where participants acted as their own controls. Results were available for 52 individuals and five forms of alignment perturbation...
2017: Journal of Medical and Biological Engineering
https://www.readbyqxmd.com/read/28285881/finite-element-analysis-of-the-amputated-lower-limb-a-systematic-review-and-recommendations
#13
REVIEW
A S Dickinson, J W Steer, P R Worsley
The care and rehabilitation of individuals after lower limb amputation presents a substantial and growing socioeconomic challenge. Clinical outcome is closely linked to successful functional rehabilitation with a prosthetic limb, which depends upon comfortable prosthetic limb - residual limb load transfer. Despite early interest in the 1980s, the amputated limb has received considerably less attention in computational biomechanical analysis than other subjects, such as arthroplasty. This systematic literature review investigates the state of the art in residual limb finite element analysis published since 2000...
March 9, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28280845/-function-of-prosthesis-components-in-lower-limb-amputees-with-bone-anchored-percutaneous-implants-biomechanical-aspects
#14
S Blumentritt
BACKGROUND: Bone anchorage of an artificial limb has been proven to be an alternative intervention for amputees when prosthesis use is seriously reduced because of stump problems. Little is known about how prosthesis components interact with bone and joints and which potential the optimum use provides with respect to quality of treatment of leg amputees. OBJECTIVE: Does osseointegration influence the motor activity of residual limbs differently compared with socket prostheses? How should prosthesis components be aligned? What type of prosthetic knee joints should be preferred in transfemoral amputees? MATERIAL AND METHODS: Transfer of biomechanical knowledge of socket prosthetics to bone-anchored prostheses...
March 9, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28278172/the-influence-of-a-hydraulic-prosthetic-ankle-on-residual-limb-loading-during-sloped-walking
#15
Sara R Koehler-McNicholas, Eric A Nickel, Joseph Medvec, Kyle Barrons, Spencer Mion, Andrew H Hansen
In recent years, numerous prosthetic ankle-foot devices have been developed to address the demands of sloped walking for individuals with lower-limb amputation. The goal of this study was to compare the performance of a passive, hydraulic ankle-foot prosthesis to two related, non-hydraulic ankles based on their ability to minimize the socket reaction moments of individuals with transtibial amputation during a range of sloped walking tasks. After a two-week accommodation period, kinematic data were collected on seven subjects with a transtibial amputation walking on an instrumented treadmill set at various slopes...
2017: PloS One
https://www.readbyqxmd.com/read/28275847/the-compress%C3%A2-transcutaneous-implant-for-rehabilitation-following-limb-amputation
#16
R L McGough, M A Goodman, R L Randall, J A Forsberg, B K Potter, B Lindsey
Amputation is an unfortunate outcome of a variety of orthopedic conditions. Many amputees can be functionally fitted with conventional suspension sockets. A substantial subset, however, fails this conventional treatment and is unable to function. In Europe, an alternative to socket-based prostheses has been available for 25 years. Patients there who are unable to functionally use socket-based prostheses have been offered the possibility for transcutaneous osseointegration. With this technology, the prosthetic limb can be rigidly attached to the residual bone, and the socket is eliminated, in many cases enabling improved function and patient satisfaction...
March 8, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28269492/classification-of-non-weight-bearing-lower-limb-movements-towards-a-potential-treatment-for-phantom-limb-pain-based-on-myoelectric-pattern-recognition
#17
Eva Lendaro, Max Ortiz-Catalan
Research in myoelectric pattern recognition (MPR) for the prediction of motor volition has primarily focused on the upper limbs. Recent studies in the lower limbs have mainly concentrated on prosthetic control, while MPR for lower limb rehabilitation purposes has received little attention. In this work we investigated the viability of a MPR system for the prediction of four degrees of freedom controlled in a near natural or physiologically appropriate fashion. We explored three different electrode configurations for acquiring electromyographic (EMG) signals: two targeted (bipolar and monopolar) and one untargeted (electrodes equally spaced axially)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269411/preliminary-results-for-an-adaptive-pattern-recognition-system-for-novel-users-using-a-powered-lower-limb-prosthesis
#18
John A Spanias, Ann M Simon, Eric J Perreault, Levi J Hargrove
Powered prosthetic legs are capable of improving the gait of lower limb amputees. Pattern recognition systems for these devices allow amputees to transition between different locomotion modes in a way that is seamless and transparent to the user. However, the potential of these systems is diminished because they require large amounts of training data that is burdensome to collect. To reduce the effort required to acquire these data, we developed an adaptive pattern recognition system that automatically learns from subject-specific data as the user is ambulating...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269407/real-time-gait-event-detection-for-lower-limb-amputees-using-a-single-wearable-sensor
#19
H F Maqbool, M A B Husman, M I Awad, A Abouhossein, P Mehryar, N Iqbal, A A Dehghani-Sanij
This paper presents a rule-based real-time gait event/phase detection system (R-GEDS) using a shank mounted inertial measurement unit (IMU) for lower limb amputees during the level ground walking. Development of the algorithm is based on the shank angular velocity in the sagittal plane and linear acceleration signal in the shank longitudinal direction. System performance was evaluated with four control subjects (CS) and one transfemoral amputee (TFA) and the results were validated with four FlexiForce footswitches (FSW)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269404/a-feasibility-study-of-depth-image-based-intent-recognition-for-lower-limb-prostheses
#20
Huseyin Atakan Varol, Yerzhan Massalin
This paper presents our preliminary work on a depth camera based intent recognition system intended for future use in robotic prosthetic legs. The approach infers the activity mode of the subject for standing, walking, running, stair ascent and stair descent modes only using data from the depth camera. Depth difference images are also used to increase the performance of the approach by discriminating between static and dynamic instances. After confidence map based filtering, simple features such as mean, maximum, minimum and standard deviation are extracted from rectangular regions of the frames...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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