Active clinical trials for "Amputation, Traumatic"

The objective of the proposed work is to enhance understanding of the potential benefits of adjustable sockets and inform clinical decision making.

The primary purpose of this study is to determine the extent to which the Regenerative Peripheral Nerve Interface ( i.e. reinnervation of partial muscle grafts by residual peripheral nerves) enables both the generation of high-performance motor control signals for prosthetic limbs, and the input of sensory percepts by electrical stimulation.

The aim of this study is to investigate the relationship of hip muscle thicknesses measured by ultrasonography with hip flexion and extension strength and clinical parameters in prosthesis users with unilateral traumatic transfemoral amputation.

Overall Goal To establish hand transplantation as a safe and effective reconstructive strategy for the treatment of upper extremity amputations. Specific Aim To reduce the risk of rejection and enable allograft survival while minimizing the requirement for long term high dose immunosuppression. For this purpose, we propose to utilize the "Pittsburgh Protocol", which is an immunomodulatory strategy that has been implemented in solid organ transplants at UPMC. Early results in living related liver and kidney patients have confirmed that this protocol provides the means to allow graft survival with minimization of maintenance immunosuppression and even allows weaning of some patients from long-term immunosuppression.We hypothesize that a similar protocol can enable graft survival in highly immunogenic composite tissue allografts like hand transplants while reducing the number,dosing and/or frequency of immunosuppressive drugs associated with serious adverse effects.

This is a prospective, randomized, double-blind, placebo-controlled, repeated measures study with intention-to-treat that involves exposure to Reiki therapy or a placebo control intervention for a total of six treatments, three treatments per week for two weeks, with a 2-week follow-up for the decrease of neuropathic pain in extremity trauma.

Fingers amputations are very common injuries among the patients arriving at the Emergency Department. Fingertips amputations classified in 2nd and 3rd zones, in accordance with Rosenthal's classification (after the solum unguis), constitute a large proportion of them. The treatment aims at restoring a pulp with its sensitivity and a good subcutaneous fat tissue. The usual care of these amputations is a surgical treatment: it consists of pulp reconstruction by a flap (for example palmar V-Y advancement flaps of Atazoy). These technique involve hospital admission, brachial plexus anaesthesia, a surgical approach with cicatrix and donor site morbidities, postoperative cares, post-surgical pain management. And of course attention must be paid to the risks of postoperative complications related either to anaesthesia and/or to surgery, like necrosis, infection, and others. We have developed a nonoperative treatment for fingertips amputations: the occlusive dressing. It's a technique that has been known for about twenty years, and that is currently developed by the teams SOS main of Professor Liverneaux in Strasbourg and of Professor Obert in Besançon. It consists of the occlusive application of two Tegaderm®, a plastic dressing. Then the finger macerates in an anaerobic medium, and could develop an uncomfortable smell induced by maceration process. The first results described by the preclinical studies of these two groups look satisfying on both the functional aspect (sensibility) and the aesthetic component (preservation of the finger length and curve), as well as for healing that occurs without infection. Moreover, the length of the treatment is of about only three or four weeks, and its cost is very low by comparison with the cost of the surgery itself. Nevertheless this technique is still not very common, and it has been reported in only five references in the literature [Mennen & Al., Farrell & Al., Lee & Al., Allen & Al., Tago Hiroyuk & Al.]. On the other hand, the mechanism of action and/or the active components of this occlusive dressing have not yet been the objects of extended studies. An explanatory hypothesis is that some anaerobic germs and/or growth factors might play an active role in the process. However, they have not been identified yet. The aim of our study is to validate through clinical and biological criteria this non operative method and to compare with surgical treatment. The study will be held in the Hand Department of the University Hospital of Strasbourg, under the direction of the Pr Liverneaux. It will imply the collaboration of the laboratory of medical bacteriology directed by Pr Piemont, and the research department of INSERM (Parogène laboratory) will focus on the biochemistry. From a clinical point of view, a certain number of objective functional criteria will be measured: the pain will be evaluated by a visual analogic scale and the DN4 scale; the functional disability will be measured with the french version of the Disability Arm Shoulder Hand of Dubert; the pulpar 3D volume will be calculated from the numerical pictures with a computerized file, the cutaneous depth will be measured by 3D U.S; the tactile sensibility will be tested by standardized monofilaments and Weber's test and the dermatoglyphics of both handsides will be compared. In addition, the subjective feeling of the patients will be recorded through a visual and analogical scale of satisfaction. The purpose of the biological component of the study will be to put into light and to identify the components that are active in the process. This will be performed by the direct examination and by bacteriological cultures, and will look for the anaerobic, aerobic germs and the yeasts.The biochemical studies will first include a non specific search of growth factors, cytokines and interleukins. In a second step, specific researches will be undertaken if necessary in accordance with the results of the first investigations. By this study, the investigators would like to scientifically confirm the efficiency of this method with objective as well as subjective criteria, and to identify the underlying biomechanisms of the process.

The objective of this study is to develop a feasible and safe regimen for minimization of immune suppression in recipients of vascularized composite allotransplants (VCA) using a daily dose of recombinant IL-2. In order to achieve this aim, this trial will: Perform VCA in 5 eligible subjects; Administer recombinant IL-2 at a low-dose to promote the expansion and function of regulatory T cells in subjects who received VCA; and Minimize immune suppression to tacrolimus single therapy in subjects who received VCA and recombinant IL-2. This trial will also investigate if it is possible to predict immune rejection in VCA using blood and tissue samples from recipients of VCA. Lastly, this trial will develop non-invasive technologies to monitor for VCA rejection. These technologies will involve magnetic resonance imaging. Multi-contrast ultra-high resolution MR imaging (MRI) with serial direct planimetry will be performed in recipients of VCA.

The purpose of this study is to investigate the effects of classical Chopart prosthesis and silicone prosthesis on socket comfort, satisfaction level and quality of life in patients with unilateral Chopart amputation.

The biomechanics of changing direction while walking has been largely neglected despite its relevancy to functional mobility. In addition, an increased risk of injury can be associated with turning due to a decrease in stability. The objective of this study is to understand the biomechanics of turning gait in sample populations of intact and trans-tibial amputees and the capacity of prosthetic components to facilitate transverse plane movement. The clinical impact of this investigation is the development of interventions that increase functional mobility, stability and safety while turning. The researchers propose to investigate three sets of hypotheses. The first set addresses the fundamental biomechanical mechanisms associated with walking along a circular trajectory, how intact subjects differ from amputees, and the effect of a rotation adaptor pylon. The second set of hypotheses addresses dynamic stability and the potential influence of prosthetic interventions. The third set of hypotheses addresses how the rotational properties of the prosthetic pylon can influence comfort and mobility during daily activities.

This trial will test the effectiveness of amitriptyline in relieving chronic pain of adults that have had an amputation