Download or read book A Comparative Stump Socket Interface Pressure Study in a Trans femoral Prosthesis written by Nancy Ibrahim El-Farargy and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparative Stump socket Interface Pressure Distribution Study Between Two Trans tibial Prosthetic Sockets written by David James Wandrum and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of the Pressure Distribution at the Prosthesis stump Interface of a New Design of Socket written by Ali Mufawaq Nsaif Al-Saadi and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most important part of a trans-femoral prosthesis is the socket. It has to transfer the load generated during gait from the ground to the stump in a comfortable way. Several socket designs for trans-femoral amputees have appeared over the past half century, which have addressed many factors such as comfort, function and suspension. However, a totally satisfactory socket is still to be achieved. The present designs that are mostly used are the quadrilateral and ischial containment. Recently, a new transfemoral socket design has been proposed. It has been called the "High Fidelity" socket. According to the developers, this socket is claimed to provide a better connection with the femur, better suspension and comfort than current sockets. The aim of this research project was to assess the function of the high Fidelity trans-femoral socket relative to the ischial containment socket. This was done by measuring and comparing the pressure distribution at the stump/socket interface of the two socket designs, and recording the subjective views of the subject. Gait parameters (kinetic and kinematic) and the pressure distribution were measured simultaneously using the CAREN system (Computer Aided Rehabilitation Environment) technology and the Tekscan system in the gait analysis laboratory. A literature review of socket design and philosophies for trans-femoral amputation level prostheses was undertaken. It was found that the pressure distribution of the High Fidelity socket is more uniform than that of the ischial containment socket. The results captured were from one subject only because of the time limitation. The subject found that both sockets were comfortable. The acclimatization period for the High Fidelity socket was short.
Download or read book Study of Stump Socket Interface Pressure for Transfemoral Amputee Using Suction Suspension System written by Hazwani Harun and published by . This book was released on 2013 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lower limb Prosthetics written by Norman Berger and published by . This book was released on 1997 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlas of Limb Prosthetics written by American Academy of Orthopaedic Surgeons and published by Amer Academy of Orthopaedic. This book was released on 2002-01-01 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt: Newly available after being out of print for several years, this is the definitive reference on the surgical and prosthetic management of acquired or congenital limb loss. Covers indications for amputation vs. limb salvage for trauma, peripheral vascular disease, and tumours; indications for prostheses for amputation levels; and rehabilitation approaches.
Download or read book Comparison of Quadrilateral and Ischial ramal Containment Sockets for Trans femoral Amputees written by Hamish Ewan Fleming and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of the Pressure Distribution at the Stump socket Interface in a Below Knee Prosthesis written by Noor Azuan Abu Osman and published by . This book was released on 1999 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trans tibial Prosthetic System Design and Benefits for the Amputee Service Providers and Society written by Tim Dumbleton and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two trans-tibial socket concepts are in regular use in prosthetic clinics. These may be categorised as the "hands-on" (hand casting) concept and "hands-off' (pressure casting) concept which, in addition to the distinctive casting methods, require different liner materials and components to create the desired loading distribution. Amputees have stated that quality of fit of the prosthetic socket is of highest importance, but, although pressure distribution has long been regarded as important, there is no general consensus regarding socket fit criteria. Furthermore, the casting process is carried out with the limb stationary. During walking the pressure distribution will change constantly throughout the gait cycle. The quality of fit of the prosthesis remains very subjective with little quantitative information regarding the pressure distribution within the socket. The aim of this study was to investigate and to compare the dynamic interface pressure distribution of the two socket concepts for a trans-tibial amputee population. In addition, the impact of the two socket concepts on their daily living activities was assessed. The objective was to relate measured pressure distribution to activity level and patient acceptance and thus increase understanding of what constitutes a good socket fit. The dynamic interface pressure distribution inside the socket of 48 patient's own prosthesis was recorded, using a validated pressure measurement system. The dynamic pressures recorded between the residual limb and the prosthetic socket showed similar distributions between the different casting concepts, although overall the hands-off sockets showed higher pressures than the hands-on group. The results from the questionnaire indicated that the quality of fit of the prosthetic socket had a strong correlation with user satisfaction. Results of this study have shown that the impacts of the two distinct prosthetic socket concepts have on the life of the amputee are very similar. Most of the participants used their prosthetic device regularly, and responded in similar ways regardless of the type of socket worn.
Download or read book Biomechanics of Lower Limb Prosthetics written by Mark R. Pitkin and published by Springer. This book was released on 2009-10-14 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword from a Clinical Biomechanist, Applied Physiologist and Prosthetist teaching graduate students in Prosthetics & Orthotics. While there are many books on Biomechanics, arguably the quintessential science of limb prosthetics, none addresses the fundamental principles in sufficient detail and depth to be practically useful to the prosthetist, rehabilitation specialist or researcher. Dr. Pitkin’s monograph is an exemplary collection of theoretical principles from his research and o- ers, presented in its clinical and applied biomechanics form. The textbook provides an excellent overview of the many facets of lower limb prosthetic design and engineering for the ardent clinician researcher and student. The book delves into many of the basic concepts that are required knowledge for the clinician and the scientist to have as the foundation for their work. Dr. Pitkin has an e- quent manner in which he reflects on the history and literature to tell the storied evolution of prosthetic design . He takes the reader on a journey to consider his theories, which have substantive foundations to contemplate. By the end of chapter one, we have the basic h- tory and an appreciation for the rationale behind the “rolling joint ankle” with evidence to support his theoretical views.
Download or read book Predicting Pressure Distribution Between Transfemoral Prosthetic Socket and Residual Limb Using Finite Element Analysis written by Rajesh Surapureddy and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, a non-linear Finite Element (FE) model was created and analyzed to determine the pressure distribution between the residual limb and the prosthetic socket of a transfemoral amputee. This analysis was performed in an attempt to develop a process allowing healthcare providers and engineers to simulate the fit and comfort of transfemoral prosthetics to reduce the number of re-fittings needed for the amputees. The analysis considered the effects of interference due to insertion of the limb into the prosthesis, referred to as donning, and also the effects due to the body weight of the amputee. A non-linear finite element static implicit analysis method was utilized. This analysis implemented multiple finite element techniques, including geometric non-linearity due to large deflections, non-linear contacts due to friction between the contact surfaces of the residual limb and the socket, and non-linear hyper-elastic material properties for the residual limb's soft tissue. This non-linear static analysis was carried out in two time-steps. The first step involved solving the interference fit analysis to study the pre-stresses developed due to the effect of donning. The donning process results in soft tissue displacement to accommodate the internal geometry of the prosthesis. In the second load application time-step, an additional load of half the person's body weight was applied to the femur. The maximum normal stress (contact pressure) of 84 kPa was observed due to the combined effect of the donning procedure and body weight application, comparable to the studies performed by other researchers. The procedure developed through this work can be used by future researchers and prosthetic designers in understanding how to better design transfemoral prosthesis.
Download or read book Stress Distribution and Optimum Design of Polypropylene and Laminated Transtibial Prosthetic Sockets FEM and Experimental Implementations written by Hayder Al-Shuka and published by GRIN Verlag. This book was released on 2018-02-08 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific Study from the year 2017 in the subject Medicine - Other, , language: English, abstract: This study presents analyses for below knee prosthetic socket of a human. Socket stress distribution is performed on three types of socket, polypropylene (5mm), polypropylene (3mm) and a standard laminate (3mm) sockets to determine the stresses path through the prosthetic socket during the gait cycle. It is found that heel strike phase is the critical phase. The stresses increase at the socket base while the maximum deflection is maximum at the patellar region of the socket. This work is achieved by finite element program, ANSYS. The development of design specifications of a below the knee prosthetic socket is presented in this study for successful ambulation and comfort. Seven different design models are created by changing the socket wall thickness and the material. Polypropylene socket gives the best results with regard to the allowable deflection for the regions of the pressure relief areas of the stump. The effect of varying the modulus of elasticity on the polypropylene socket is considered in this study. Three models are analyzed with different tensile creep moduli during different periods. It is found that the polypropylene socket will enlarge in size with time. An experimental study is conducted to compare the strength of five prosthetic sockets made of different materials. Compression, three-point flexural and tensile tests are implemented by the Testometric machine. The laminate sockets have larger compressive stiffness than polypropylene while polypropylene has larger flexural stiffness than the tested laminates except for socket No.5.
Download or read book Dynamic Interface Pressure Measurement written by Arjan W. P. Buis and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of the Pressure Distribution at the Stump socket Interface of Ischial Containment Quadrilateral Sockets written by Yuki Okamoto and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of the Compression Release and Ischial Containment Transfemoral Prosthetic Socket Designs Using Gait Analysis written by Mohammed Mustafa Kamil and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional transfemoral prosthetic socket designs share many challenges. Prosthetic sockets enclose the residual limb and connect to other parts of the prosthesis to facilitate control and promote a more natural gait pattern by the user. One of the main challenges is to create stability between the residual femur and the prosthetic socket, thus improving efficiency and comfort whilst reducing gait deviations.Established designs such as the ischial containment socket (ICS); purport to reduce femoral abduction by containing the medial aspect of the ischium in counterforce to the greater trochanter and femoral shaft. This design relies on a proximal 'bony lock' to limit femoral abduction at mid stance within the prosthesis. A new design of socket named the compression/release socket (CRS), however, uses three or more 'compression' regions between the femoral bone and the socket walls to minimise femoral motion. The CRS design claims to improve the gait pattern of the user through enhanced distal femoral stability and socket control. Despite minimal evidence being available, the design is currently being introduced in clinics worldwide.The aim of this research is to compare the stabilisation achieved in two transfemoral prosthetic socket designs by identifying and measuring the effect on the user using appropriate gait parameters. Initially, a literature review was conducted to establish understanding of normal and prosthetic gait. Literature was then examined to establish historical prosthetic transfemoral socket concepts and the biomechanics underpinning currently accepted designs. Due to the difficulty in obtaining participants appropriately fitted with the CRS sockets, this project has been presented as a feasibility study. Two designs of sockets were then compared: ICS versus CRS design. The gait of one subject with transfemoral amputation was assessed whilst wearing both sockets in a gait laboratory. Important kinematic and spatial temporal parameters, identified in the literature review, were compared for both socket designs under a variety of challenging walking conditions (level, downhill, uphill and cross slope walking). Comparison was also made between the amputated and contralateral side for each socket design. Results indicate that, kinematic parameters did not demonstrate large variations, but that some variation was found between prostheses when measuring hip abduction, hip flexion, knee flexion and ankle plantar flexion in both the prosthetic and contralateral limbs. When using the CRS design, user range of motion for the hip joint appeared to be greater than that of the ICS. Step length and step width on both sides were closely matched in both socket designs. Preliminary study results indicate that alteration in the step length or width did not reduce the velocity of gait, but was more likely to result from change of strategy by the participant to ensure greater control over balance or stability. Further research with a greater number of participants is required to investigate the effect of socket design on stability and gait parameters in the future.
Download or read book The Promise of Assistive Technology to Enhance Activity and Work Participation written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-09-01 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Census Bureau has reported that 56.7 million Americans had some type of disability in 2010, which represents 18.7 percent of the civilian noninstitutionalized population included in the 2010 Survey of Income and Program Participation. The U.S. Social Security Administration (SSA) provides disability benefits through the Social Security Disability Insurance (SSDI) program and the Supplemental Security Income (SSI) program. As of December 2015, approximately 11 million individuals were SSDI beneficiaries, and about 8 million were SSI beneficiaries. SSA currently considers assistive devices in the nonmedical and medical areas of its program guidelines. During determinations of substantial gainful activity and income eligibility for SSI benefits, the reasonable cost of items, devices, or services applicants need to enable them to work with their impairment is subtracted from eligible earnings, even if those items or services are used for activities of daily living in addition to work. In addition, SSA considers assistive devices in its medical disability determination process and assessment of work capacity. The Promise of Assistive Technology to Enhance Activity and Work Participation provides an analysis of selected assistive products and technologies, including wheeled and seated mobility devices, upper-extremity prostheses, and products and technologies selected by the committee that pertain to hearing and to communication and speech in adults.
Download or read book Atlas of Amputations and Limb Deficiencies written by Douglas G. Smith and published by American Academy of Orthpaedic Surgeons. This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the major advances in the field since the last edition in 1992. New chapters cover amputee care in wartime, the role of the Krukenberg proceedure in developing countries, the rise of the amputee consumer movement, and the rapidly expanding role of sports and recreation for amputees, as well as the more controversial topics of osseointegration and transplantation. The major influence of orthopaedic surgeons in the development of both amputation surgery and prosthetics is noted in the greatly expanded chapter on the history of these fields. A chapter on absence of the lumbar spine and sacrum has been added, as well as a chapter on surgical revision.
