HOW REPRODUCIBLE ARE THE EFFECTS OF A MICROPROCESSOR FOOT?

Abstract INTRODUCTION Using microprocessor-control to dynamically adapt hydraulic ankles, by changing the resistances to dorsiflexion and plantarflexion (DF/PF) movements, has been shown to have beneficial biomechanical effects during slope descent1. Another, more recent case study also showed that the level walking biomechanical effects of microprocessor-feet (MPF) persist, and the same trends can be observed in repeated gait analysis sessions, over a year apart2. This work looks to expand on both of these concepts, analysing repeated gait analysis sessions to see if the biomechanical changes of MPF during slope descent are reproducible over time. Abstract PDF Link: https://jps.library.utoronto.ca/index.php/cpoj/article/view/32013/24432 How to cite: McGrath M, Stech N, Laszczak P, Kercher A, Zahedi S, Moser D. HOW REPRODUCIBLE ARE THE EFFECTS OF A MICROPROCESSOR FOOT? CANADIAN PROSTHETICS & ORTHOTICS JOURNAL, VOLUME 1, ISSUE 2, 2018; ABSTRACT, POSTER PRESENTATION AT THE AOPA’S 101ST NATIONAL ASSEMBLY, SEPT. 26-29, VANCOUVER, CANADA, 2018. DOI: https://doi.org/10.33137/cpoj.v1i2.3201

Presentación del dossier "Ingenieros sociales en América Latina: el papel de la Antropología y su institucionalización en las nuevas repúblicas"

[ES] En este dossier, siete textos cuyos autores abordan una temática fascinante, compleja, muy significativa en lo cultural y social: el desarrollo de los estudios antropológicos (y relacionados) en la América Latina, su mayor o menor institucionalización y el papel que desempeñaron en la formación de las nuevas naciones y estados de Latinoamérica.Peer reviewe

BIOMECHANICAL ANALYSIS OF DIFFERENT PROSTHETIC TECHNOLOGIES FOR TRANS-FEMORAL AMPUTEES DURING SLOPE DESCENT

INTRODUCTION Lower limb amputees have different biomechanics to able-bodied people when walking on slopes1,2, often struggling to negotiate different gradients safely. Loss of proprioception and muscular control contributes to this issue, which is a particular problem for trans-femoral amputees, where both ankle and knee joints are absent. Studies have shown that prosthetic technologies can have benefits for slope negotiation. The aim of this study was to isolate the specific effects of different trans-femoral prosthetic technologies, by applying each additional mechanism incrementally. Abstract PDF  Link: https://jps.library.utoronto.ca/index.php/cpoj/article/view/32012/24431 How to cite: Stech N, McGrath M, Laszczak P, Kercher A, Zahedi S, Moser D. BIOMECHANICAL ANALYSIS OF DIFFERENT PROSTHETIC TECHNOLOGIES FOR TRANS-FEMORAL AMPUTEES DURING SLOPE DESCENT. CANADIAN PROSTHETICS & ORTHOTICS JOURNAL, VOLUME 1, ISSUE 2, 2018; ABSTRACT, POSTER PRESENTATION AT THE AOPA’S 101ST NATIONAL ASSEMBLY, SEPT. 26-29, VANCOUVER, CANADA, 2018. DOI: https://doi.org/10.33137/cpoj.v1i2.32012 Abstracts were Peer-reviewed by the AOPA 2018 National Assembly Scientific Committee

THE INFLUENCE OF PERFORATED PROSTHETIC LINERS ON RESIDUAL LIMB WOUND HEALING: A CASE REPORT

CASE DESCRIPTION: Good residual limb skin health is vital to successful prosthetic prescription. Unnatural loading profiles and excessive sweating can lead to skin and soft tissue problems. Perforated liners allow the transport of moisture away from the skin and allow negative pressure (a condition that has been shown to aid wound healing) to act directly on the residuum surface. AIM: Assess the effects of perforated prosthetic liner use, particularly with respect to wound healing. METHOD: Three patient histories were retrospectively reviewed following prescription of perforated prosthetic liners due to excessive sweating or prolonged residual limb health concerns. Photographic records from patient files were used to document changes in residual limb condition. Patients also provided subjective feedback regarding their experiences. FINDINGS: Two cases described active amputees with persistent blistering irritated during exercise. Another case described a patient of low mobility level with a history of residual limb skin infections. All saw their conditions heal and reported a reduction in problematic sweating. Two patients reported cancelling surgical interventions after substantial improvements with the perforated liner. DISCUSSION: These findings provide evidence that the use of perforated prosthetic liners allow improvements in residual limb health, while still permitting prosthetic use. Layman’s Abstract For lower limb amputees, excessive sweating is a common issue affecting their quality of life. It is particularly problematic for the skin of the amputated limb, which may be scarred and is loaded unnaturally by the prosthetic socket. Silicone liners are often worn to provide a close fit and for cushioning but they create a warm environment that traps sweat against the skin, leading to bacterial growth. Additionally, sweat on the skin can increase the amount of movement between the amputated limb and the socket, affecting prosthetic control. In order to address this problem, silicone liners have been designed with perforations in them to allow warm air and sweat to move away from the skin. This report describes three cases of patients who suffered from long-standing wounds, blisters or skin infections on their amputated limbs. Each was prescribed with a perforated silicone liner and changes in their skin conditions were observed. In all cases, the wounds healed and each patient reported a noticeable reduction in problematic sweating on their residual limb, without limiting their prosthetic use. Article PDF Link: https://jps.library.utoronto.ca/index.php/cpoj/article/view/32723/25281 How To Cite: McGrath M, McCarthy J, Gallego A, Kercher A, Zahedi S, Moser D. The influence of perforated prosthetic liners on residual limb wound healing: a case report. Canadian Prosthetics & Orthotics Journal. 2019; volume2, Issue1, No.3. https://doi.org/10.33137/cpoj.v2i1.32723 Corresponding Author:Dr. Michael McGrath,Research Scientist–Clinical EvidenceBlatchford Group, Unit D Antura, Bond Close, Basingstoke, RG24 8PZ, United KingdomEmail: [email protected]

PERFORMANCE OF AN ACTIVITY MONITOR INTEGRATED INTO A MICROPROCESSOR KNEE

INTRODUCTION  For many years, the biomechanical evaluation of prosthetic performance has centred around gait analysis and motion capture. While this provides useful, scientific insights, everyday life is not limited to straight-line, level, steady-state walking. With advancements in portable sensor technology in the last two decades, long-term activity monitoring (AM) has become a more feasible and reliable prospect for accurately representing the real-world walking behaviour of patients. Modern microprocessor knees (MPKs) have begun to have this functionality built into the devices themselves, without the necessity for additional, external hardware. Abstract PDF  Link: https://jps.library.utoronto.ca/index.php/cpoj/article/view/32031/24448 How to cite: Sykes A, Stech N, Laszczak P, McGrath M, Kercher A, Zahedi S, Moser D. PERFORMANCE OF AN ACTIVITY MONITOR INTEGRATED INTO A MICROPROCESSOR KNEE. CANADIAN PROSTHETICS & ORTHOTICS JOURNAL, VOLUME 1, ISSUE 2, 2018; ABSTRACT, ORAL PRESENTATION AT THE AOPA’S 101ST NATIONAL ASSEMBLY, SEPT. 26-29, VANCOUVER, CANADA, 2018. DOI: https://doi.org/10.33137/cpoj.v1i2.32031             Abstracts were Peer-reviewed by the AOPA 2018 National Assembly Scientific Committee

PERFORMANCE OF AN ACTIVITY MONITOR INTEGRATED INTO A MICROPROCESSOR KNEE

INTRODUCTION  For many years, the biomechanical evaluation of prosthetic performance has centred around gait analysis and motion capture. While this provides useful, scientific insights, everyday life is not limited to straight-line, level, steady-state walking. With advancements in portable sensor technology in the last two decades, long-term activity monitoring (AM) has become a more feasible and reliable prospect for accurately representing the real-world walking behaviour of patients. Modern microprocessor knees (MPKs) have begun to have this functionality built into the devices themselves, without the necessity for additional, external hardware. Abstract PDF  Link: https://jps.library.utoronto.ca/index.php/cpoj/article/view/32031/24448 How to cite: Sykes A, Stech N, Laszczak P, McGrath M, Kercher A, Zahedi S, Moser D. PERFORMANCE OF AN ACTIVITY MONITOR INTEGRATED INTO A MICROPROCESSOR KNEE. CANADIAN PROSTHETICS & ORTHOTICS JOURNAL, VOLUME 1, ISSUE 2, 2018; ABSTRACT, ORAL PRESENTATION AT THE AOPA’S 101ST NATIONAL ASSEMBLY, SEPT. 26-29, VANCOUVER, CANADA, 2018. DOI: https://doi.org/10.33137/cpoj.v1i2.32031             Abstracts were Peer-reviewed by the American Orthotic Prosthetic Association (AOPA) 101st National Assembly Scientific Committee.  http://www.aopanet.org

Mechanical Thrombectomy for Sequential Bilateral Middle Cerebral Artery Occlusions in a Patient With Recurrent Cryptogenic Strokes: A Case Report

Recurrent sequential mechanical thrombectomy for cryptogenic large vessel occlusion (LVO) can lead to excellent clinical outcome. A 68-year-old right-handed male presented with an acute proximal right middle cerebral artery (MCA) ischemic syndrome and underwent successful revascularization by mechanical thrombectomy with normal functional recovery. He was treated with dual antiplatelet therapy for 2 months following discharge, however later discontinued clopidogrel due to side effects. He then developed a recurrent, contralateral MCA occlusion 16 months later and once again received emergent endovascular reperfusion therapy with excellent neurological outcome. He has remained on off-label empiric oral anticoagulation since and has not had recurrent stroke nor evidence of cerebral ischemia. Favorable clinical outcomes can be achieved in patients despite recurrent LVO who underwent emergent mechanical thrombectomy. Optimal antithrombotic secondary stroke prevention strategies following embolic stroke of unknown source remains uncertain as recent evidence does not support rivaroxaban or dabigatran over aspirin. The benefit of apixaban over aspirin for the prevention of recurrent cerebral ischemia is under current investigation