Consistency, precision, and accuracy of optical and electromagnetic shape-capturing systems for digital measurement of residual-limb anthropometrics of persons with transtibial amputation. (73/333)

Computer-aided design (CAD) and computer-aided manufacturing systems have been adapted for specific use in prosthetics, providing practitioners with a means to digitally capture the shape of a patient's limb, modify the socket model using software, and automatically manufacture either a positive model to be used in the fabrication of a socket or the socket itself. The digital shape captured is a three-dimensional (3-D) model from which standard anthropometric measures can be easily obtained. This study recorded six common anthropometric dimensions from CAD shape files of three foam positive models of the residual limbs of persons with transtibial amputations. Two systems were used to obtain 3-D models of the residual limb, a noncontact optical system and a contact-based electromagnetic field system, and both experienced practitioners and prosthetics students conducted measurements. Measurements were consistent; the mean range (difference of maximum and minimum) across all measurements was 0.96 cm. Both systems provided similar results, and both groups used the systems consistently. Students were slightly more consistent than practitioners but not to a clinically significant degree. Results also compared favorably with traditional measurement, with differences versus hand measurements about 5 mm. These results suggest the routine use of digital shape capture for collection of patient volume information.  (+info)

Asynchronous decoding of dexterous finger movements using M1 neurons. (74/333)

 (+info)

Modeling and preliminary testing socket-residual limb interface stiffness of above-elbow prostheses. (75/333)

 (+info)

Training of reaching in stroke survivors with severe and chronic upper limb paresis using a novel nonrobotic device: a randomized clinical trial. (76/333)

 (+info)

An implanted upper-extremity neuroprosthesis using myoelectric control. (77/333)

 (+info)

The diagnostic importance of exercise testing in developing appropriate rehabilitation programmes for patients following transfemoral amputation. (78/333)

AIM: The aim of this study was to determine whether an arm ergometry exercise test can successfully predict a clinician's decision for prosthetic fitting, and to define what other factors are also important predictors of a patient's ability to walk with a prosthesis. METHODS: The study included 63 patients who had undergone transfemoral amputation due to peripheral vascular disease and who had been admitted for primary inpatient rehabilitation. Participating patients went through standard admission procedures and performed an intermittent sub maximal arm ergometry exercise test in the first week after admission consisting of a two-minute exercise routine with a one-minute pause in-between by means of the Angio V2. The work loads started at 10 W and were increased by 10 W at each level. The cranking rate was 50 to 55 rpm. RESULTS: The patients reached an output level of 20 W on average. Those patients selected for fitting with a prosthesis achieved higher levels on the exercise stress test (26 versus 12 W, P<0.000). The results of the exercise stress test, the 6-minute walking test and the functional independence measures (FIM) at admission, as well as their age and gender, allowed for successful discrimination between patients who were fitted with a prosthesis and those who were not (P<0.000). The best discriminator was that of the results achieved on the exercise stress test. Using the five previously mentioned variables, 83.6% of the patients were successfully classified as to whether or not they were fitted for a prosthesis on the basis of our clinical decision. CONCLUSION: The exercise stress test is a good predictor of prosthetic fitting. It also anticipates the possibility of cardiovascular complications during rehabilitation programmes. Combined with the 6-minute walk, the FIM, and age, it may be an important criteria to consider in making the decision about the appropriateness of prosthetic fitting.  (+info)

A musculoskeletal model of the upper extremity for use in the development of neuroprosthetic systems. (79/333)

 (+info)

Protecting a patellar ligament reconstruction after proximal tibial resection: a simplified approach. (80/333)

 (+info)