View clinical trials related to Amputation.
Filter by:The purpose of this research is to determine the feasibility of an uneven terrain walking program for lower limb prosthesis users. The training is designed to induce step-to-step variability during walking within a safe environment, with the aim of improving walking skill and confidence.
The e-OPRA Implant System, is a further development of the OPRA (Osseointegrated Prostheses for the Rehabilitation of Amputees) Implant System. The e-OPRA Implant system is an implant system for direct skeletal anchorage of amputation prostheses. The added feature in the e-OPRA Implant system, is a bidirectional interface into the human body that allows permanent and reliable communication using implanted electrodes. These electrodes will provide long-term stable bioelectric signals for an improved control of the prosthetic limb. The Magnetic Bead Tracking System, which will be implanted and used in combination with the e-OPRA Implant system, is an investigational device that consists of pairs of magnetic beads, and a set of magnetic field sensors that measure and track the length of muscles and the speed at which they move in real-time. When the beads are implanted in muscle in the residual limb of an amputee, the muscle length signal is communicated to an investigational, robotic ankle-foot prosthesis. The purpose of the study is to evaluate the feasibility of a transtibial amputee with the e-OPRA Implant System and Magnetic Bead Tracking System exhibiting full neural control over a neuro-mechanical prosthetic system. A maximum of seven subjects will be enrolled. Each subject will undergo one or more surgeries where the e-OPRA Implant System and Magnetic Bead Tracking System will be implanted. The subjects will participate in follow-up sessions the last of which occurs approximately 24 months after the surgery. This is a prospective, non-randomized, uncontrolled study.
Transmetatarsal amputation (TMA) patient populations commonly have poor healing outcomes and a large number of complications. There has been little study on the benefits of augmenting a TMA with a synthetic graft substitute. The long term goal is to push for an application of synthetic graft substitute to reduce infection rates and aid in the healing process. Augmenting a TMA with a synthetic electrospun fiber matrix will demonstrate utilization of the product and other comparators in generating wound healing and infection rate outcomes including rate of infection, wound dehiscence and total healing response. Electrospun fiber matrices have long been investigated as an innovative construct for use in tissue engineering and regenerative medicine research due to their ability to mimic the structure and scale of native tissue. Clinical studies have demonstrated clinical efficacy in treating both chronic and acute wounds. There is strong evidence to support the application of a synthetic electrospun fiber matrix will generate favorable wound healing and reduce infection rates.
This study was planned to examine the relationship between trunk position sense and muscle activation, balance and quality of life in individuals with transtibial amputation. Individuals with unilateral transtibial amputation who have been using prostheses for at least 1 year and volunteered to participate in the study, as well as healthy individuals with similar demographic characteristics will be included in the study. The number of cases considered to be included in the study will be obtained from the statistical analysis of the results of the pilot study to be conducted with 5 individuals, since there is no study on the subject. The power of the study will be determined as 0.80. After determining the number of individuals to be included in the study group, a control group will be formed with the same number of healthy individuals. The study will be terminated when the determined total number of participants is reached. Body position sense, trunk muscle activation, static and dynamic balance performances and quality of life of all individuals will be evaluated. Body position sense of individuals with "Dualer IQ Pro Digital Inclinometer" device, trunk muscle activation with "Delsys Trigno IM wireless surface electromyography (sEMG) system", balance with "Bertec balance platform", balance and functional mobility with "Berg Balance Scale (BDI) ", "Timed Up and Go Test (SKYT)" and "Modified Star Excursion Test (SEBT)" and quality of life will be evaluated with "Trinity Amputation and Prosthesis Experience Scale (TAPES)". As a result of our study, investigators think that it will contribute to the current scientific knowledge about the somatosensory and biomechanical mechanisms underlying the abnormalities that occur in the trunk after transtibial amputation, to determine whether the trunk position sense of individuals with transtibial amputation is affected or not, and to determine the relationship between trunk position sense and muscle activation, balance and quality of life.
The goal of this clinical trial is to learn about how a participation-based intervention builds capacity of youth with physical disabilities to pursue activities of their choice in the community. The investigators plan to examine in what ways working with a therapist to set up and engage in an 8-week self-chosen community-based activity builds capacity of youth with physical disabilities to pursue a new activity of their choice in the community without the support of a therapist. During this study, participants will be followed for 26 weeks. Youth will work with an occupational therapist (OT). - In the first week, the OT will meet with youth to set a community-based leisure goal. Examples of activities could include music, sports, cooking lessons, painting, or photography, in the youth's community. - The OT will work with youth to identify and remove barriers. They will also adapt the activity to help youth do the activity for 8 weeks. During this time, the OT will perform site visits to consult and support youths' involvement as needed. (Weeks #1-8) - Youth will have a four-week break after completing their first activity. (Weeks #9-12). Then, youth will be asked to choose a second (new) activity. They will try to start this activity for 8 weeks without the OT. (Weeks #13-20) - At the end of these 8 weeks, the same therapist will help the youth for 6 weeks if needed to do their second activity. (Weeks #21-26) Youth will be asked to complete the following online: 1. A standard demographic questionnaire (during the first meeting). 2. Rate their perceived performance in the chosen activity once a week. 3. A questionnaire about their daily participation in the community. This will be done at the start and end of the study. 4. A questionnaire about how well they feel they are able to do things. This will be done three times. 5. Share steps they take to participate in the activity. This will be done through a weekly diary entry. In addition, three one-on-one interviews (for about an hour each) will be done remotely (using Microsoft TEAMS) to share their experience pursuing their selected activities. Interviews will be done before starting their second (new) activity, after 8 weeks of pursuing the new activity on their own, and after 6 weeks with OT support. These interviews will be video, and audio recorded and transcribed. This study examines 'real-life' experiences and participation outcomes of youth with physical disabilities after a participation-based capacity-building intervention.
To determine the benefit of the vvibrotactile sensory feedback device.
Participation in community-based activities is essential to the health and well-being of youth with physical disabilities; yet, it is extremely restricted. Emerging treatment approaches aimed at improving participation have shifted from focusing only on impaired body functions towards the performance of functional meaningful activities within the youth's natural environment. Investigators' initial results from studies in Quebec show that targeting intervention at the activity/participation level can result in improvement of impaired body functions (e.g., balance, attention, anxiety) - important components to address in rehabilitation. Investigators' team aims to continue studying the impact of participation by launching a larger more rigorous study. Investigators have partnered with major organizations providing rehabilitation services for youth as well as key community-based stakeholders including youth, clinicians, and managers, and together investigators plan to further examine whether engaging in an 8-week community-based activity individually chosen by the youth (e.g., sledge hockey, drawing, playing a musical instrument) can lead to a significant improvement in three key body functions: motor, behavioral and emotional. One hundred and fifty youth with physical disabilities living in Quebec and Ontario will participate and engage in an activity of choice. Changes in their body functions (e.g., movement, attention, mood) will be measured multiple times before, during and after engagement in the chosen activity. Findings of this study can guide clinicians, families and policy-makers to select effective approaches that not only promote participation but also facilitate additional motor and mental benefits from a single intervention. Such 'real-world' treatment approaches involving activities of choice can also increase motivation, compliance and reduce burden on the healthcare system and on the youth and families.
The objective of this study is to characterize the extend of 1C70 meeting the amputees needs in comparison with their everyday and a comparator foot, in regards of daily activities, mobility and balance, as well as quality of life and pain.
The main purpose of the study is to reveal the early and late changes in the walking characteristics of patients with lower extremity amputation. Secondly, it is planned to reveal the factors affecting the walking characteristics of patients with amputation and to compare individuals with different levels of amputation in terms of clinical outcome measures.
Our sense of touch is essential to explore our environment and experience life and is based on signals from receptors in the body that are sensitive to different types of stimulation. The TACTHUM projects aims to investigate the fundamental firing of mechanoreceptors in the body to various external stimuli, with an end-aim to better understand the human somatosensory system and to apply this knowledge to provide comprehensive sensory feedback in prosthetics. We have a vast system of peripheral receptors in the skin and muscles that provide us with exquisitely detailed information about our everyday interactions. When there is injury to a body part, such as in amputation, there is a significant loss of somatosensory input. Prosthetic devices have greatly developmed in the past few years, especially with the introduction of useful sensory feedback. However, there is a lot to discover both about the workings of the somatosensory system and how to recreate this to give feedback in a prosthetic device. The main objective of the TACTHUM project is to understand how to recover and apply useful somatosensory feedback in prostheses for amputees. There are a number of other sub-objectives, to: 1. Determine how tactile mechanoreceptors encode the texture of natural surfaces during passive and active exploration. 2. Investigate how our sense of touch varies with emotional state. 3. Explore what happens to our sense of touch when we explore surfaces at different temperatures. 4. Understand the origin of our perception of humidity. 5. Investigate differences in the encoding of tactile information with age. 6. Determine the perceptions generated by the stimulation of single tactile afferents. 7. Study changes in spontaneous activity and responses to tactile stimulation on the residual limb of amputees. To accomplish these objectives, we will primarily use the technique of microneurography, in vivo recordings from peripheral nerves, to gain direct information about the firing of peripheral neurons in humans. In conjunction with this, we will use a variety of mechanical and thermal stimuli to excite somatosensory fibers and register the activity of other physiological and perceptual measures. This will allow us to gain a fuller understanding of how the incoming somatosensory signals are interpreted and processed. Overall, we aim to explore how more naturalistic tactile interactions are encoded and how these can be translated to provide realistic prosthetic feedback.