An interface based on inertial sensors with applications for master slave robotic teleoperation is developed. The interface is composed of two portable inertial sensor units which are placed on the upper and lower arm in order to obtain acceleration and turning rates. The data is internally processed by a DSP in the sensors and yields orientation measurements of the bodies they are attached. Th...

BACKGROUND AND PURPOSE Splints are commonly applied to the wrist and hand to prevent and treat contracture after stroke. However, there have been few randomized trials of this intervention. We sought to determine whether wearing a hand splint, which positions the wrist in either a neutral or an extended position, reduces wrist contracture in adults with hemiplegia after stroke. METHODS Sixty-...

Normal subjects were used to evaluate a fiber optic instrumented glove for semi-automated goniometric measurement. The glove electronically records and transmits hand and finger position to a host computer by measuring the amount of joint flexion. The glove was put through a series of range-of-motion (ROM) tests with five subjects. Metacarpal (MP) and proximal interphalangeal (PIP) joint angles...

Pulse pressure velocity measurements (PPV) may be a source of useful information on artery state. A 2007 guideline of the European Society of Hypertension recommends assessing arterial stiffness in patients with arterial hypertension, by measuring the PPV. Mechanical changes in the cardiovascular tree involved in the blood ejection have been measured at the thorax level and on the wrist using i...

A half-space electromagnetic model of human skin over the band 30-300 GHz was constructed and used to model radiometric emissivity. The model showed that the radiometric emissivity rose from 0.4 to 0.8 over this band, with emission being localized to a layer approximately one millimeter deep in the skin. Simulations of skin with differing water contents associated with psoriasis, eczema, malign...

A Filipino female teenager with gross deformity of her right wrist, came as an outpatient for radiographic evaluation nonspecific pain and numbness after prolonged repetitive, active wrist movements like writing clapping, are noted no history trauma, infection, or surgical intervention the aforementioned wrist.

The elevation gain is an important contributor to the total workload in endurance sports. The purpose of this study was to evaluate the influence of the arm swing on elevation gain in three sport watches (Garmin® Forerunner 910XT, Polar® RS800CX and Suunto® Ambit2) on a flat 400 m outdoor track. Altogether, a total of 120 repetitions of 1,200 m were performed at self-selected speeds correspondi...

PURPOSE To investigate the feasibility of automatic quantification of bone marrow edema (BME) on MRI of the wrist in patients with early arthritis. METHODS For 485 early arthritis patients (clinically confirmed arthritis of one or more joints, symptoms for less than 2 years), MR scans of the wrist were processed in three automatic stages. First, super-resolution reconstruction was applied to ...

In extant birds, the hand is permanently abducted towards the ulna, and the wrist joint can bend extensively in this direction to fold the wing when not in use. Anatomically, this asymmetric mobility of the wrist results from the wedge-like shape of one carpal bone, the radiale, and from the well-developed convexity of the trochlea at the proximal end of the carpometacarpus. Among the theropod ...

A long-term sea voyage imposes a special living environment on mariners that directly influences their physical health. To our best knowledge, there have been few research efforts that evaluate mariners' physical health during sea life. This study aims to develop wearable-based mariner physical activity classification models. Twenty-eight participants (n=7 females, n=21 males, mean age=21.4, an...