View clinical trials related to Lower Limb Amputation.
Filter by:The aim of this study is to evaluate the effect of epidural oxycodone for pain management after lower limb amputation.
The study will investigate the application of a non-pharmacological operant conditioning approach to reduce phantom limb pain (PLP). PLP afflicts 60-90% people who have lost a limb. It can last for years and lead to drug dependence, job loss, and poor quality of life. Current non-pharmacological interventions are encouraging but limited, and their efficacy remains unclear. Limb amputation is known to lead to abnormal sensorimotor reorganization in the brain. Multiple studies have shown that PLP severity is correlated with the extent of this reorganization. The current study will train participants via realtime feedback of brain responses to promote more normal sensorimotor response, with the goal to reduce phantom limb pain.
This prospective randomized controlled study will be conducted to evaluate the analgesic effect of continuous perineural infusion of methylene blue with bupivacaine on acute postoperative pain and to evaluate its preventive role against chronic phantom pain in patients undergoing lower limb amputation surgery
Amputation is a life-altering event with an immediate and obvious effect on daily life activities and quality of life. Asymmetrical movements of the lower limbs and compensatory strategies during walking are associated with an elevated risk for developing deleterious secondary health conditions. It is well established that therapeutic gait training methods are effective in reducing spatiotemporal gait deviations and improving functional mobility. However, the littérature does not clearly indicate the best time to perform a gait training or which gait parameters predict it. The main aim of this study is to determinate the walking strategies of lower limb amputees in several locomotion tasks on daily life. Then, the investigators study the evolution of these walking strategies after a gait training and over time.
This study is intended to test the comparative biomechanical benefits of different lower-limb prostheses and orthoses using data collected over extended periods of everyday life using wearable sensors. Investigator seek to improve physical health, functional activity level, independence, workforce participation, and mental health in participants with lower limb amputation and other lower-limb impairments. Investigator seek to study the similarities and differences in participants' movement using prostheses and orthoses with different technological features or designs. Study team also seek to develop technologies that enhance the methods for using wearable sensor technology to perform this type of study. Participants with lower-limb amputation, participants who use lower limb orthoses, participants with drop-foot (including a specific group with Multiple Sclerosis), and healthy control participants will be recruited in this study.
Patients with lower limb amputations are equipped with prostheses that can be mechanical and/or electronic. These prostheses can be mono-articular (only the ankle) or bi-articular (knee and ankle for example). For amputee patients, situations that may seem trivial, such as climbing and descending stairs, become complex. Thus during the descent of stairs, an unamputated person will slow down the descent by contracting the thigh muscles, which are obviously lacking in the amputee patient. Current prostheses, known as "intelligent" (or "microprocessor") prostheses, make it possible to adjust the locomotion only once the first step has been taken and to assist the patient during ascent/descent situations on slopes and stairs. The next technological challenge in the development of lower limb equipment is to be able to anticipate these complex environmental situations, in order to secure and facilitate movement even before the obstacle is crossed or the terrain changed. This project plans to use the locomotor expectations commonly made during walking as a means of regulating the locomotor pattern. We believe that these expectations will depend on the situation, i.e. a particular anticipation when climbing or descending a slope, or when approaching a staircase, etc. To understand and describe these locomotor expectations, we plan to use recent techniques called supervised machine learning. These will make it possible to classify locomotor behaviour when walking on a slope or stairs. In the second phase, we would like to describe precisely the characteristics of the movements of the joints, and of the muscles during these adaptations. The final objective of this work is to create an autonomous sensor system to control the anticipatory behaviour of a lower limb prosthesis.
It appears necessary to confront the reality of the contribution of technological progress in the creation of prostheses with the specific features of lower limb amputees. These contributions must be clearly identified in their different functional dimensions. This justifies a quantitative approach to the locomotor abilities of these patients, with regard to bioenergy parameters (consumption of oxygen while walking) and motor biomechanical parameters (quantified analysis of movement), so as to measure the real impact of the proposed prosthesis technology, as a complement to classical qualitative approaches. In this context, Dijon CHU, thanks to its Technological Investigation Platform (PIT, CIC 1432), and the company PROTEOR established a research partnership aiming to: - Refine the indications for the prescription of new products, by ensuring that they correspond to the profiles of the patients concerned and their true needs, - Study the underlying adaptive mechanisms, and establish new recommendations for their use, depending on the profiles of the users, - And ultimately, better evaluate, in a more rigorous and systematic manner, the prostheses available on the market. The research protocol presented in this document aims to provide a framework for part of the explorations that will be conducted in the context of this partnership. Lower-limb amputees who will be evaluated in this research will wear these prostheses (foot and/or knee prostheses), which bear the CE logo, and thus present all of the safety and performance conditions required for their use by these patients (prostheses destined for usual prescriptions), the objective of the study was not to evaluate the prostheses as such, but to explore and quantify the impact of these prostheses and their eventual modifications on the locomotor abilities of the patients concerned. The investigations will be conducted using non-invasive evaluation tools available on the PIT platform, with no modification in the usual management of these voluntary patients.
The purpose of the study is to evaluate residual limb circulation and skin health associated with the use of a novel prosthetic transfemoral socket system. A conventional prosthesis will be compared to the novel transfemoral socket system.
The purpose of the study is to evaluate residual limb circulation and skin health associated with the use of a prosthetic vacuum socket. A conventional non-vacuum prosthetic socket will be compared to a vacuum prosthetic socket.