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Namdari Surena - - 2010
HYPOTHESIS: This study was conducted to identify preoperative factors correlating with limited motion after rotator cuff repair (RCR) and to evaluate the affect of loss of motion on outcome. We hypothesized that patients with preoperative ROM loss, diabetes, and workman's compensation claims would exhibit postoperative ROM loss at 3 months. ...
Cornwall Mark W - - 2009
BACKGROUND: Classification of rearfoot motion patterns would assist in understanding normal rearfoot motion and would facilitate the identification of abnormal motion. We sought to identify common frontal plane rearfoot motion patterns in an asymptomatic population. METHODS: Frontal plane rearfoot motion was measured with an electromagnetic motion analysis system in 279 ...
Ferreres A - - 2009
When treating the degenerative arthritis that follows scapholunate instability or scaphoid pseudarthrosis, excision of the scaphoid must be combined with a stabilisation of the midcarpal joint. Two alternatives have been proposed for that purpose: fusing the lunate, triquetrum, capitate and hamate (four corner fusion), 4CF; or limiting the arthrodesis to ...
Roldán-Vargas Sándalo - - 2009
We study the nondiffusive Brownian motion of both rigid and deformable mesoscopic particles by cross-correlated dynamic light scattering with microsecond temporal resolution. Whereas rigid particles show the classical long-time tail prediction, the transition to diffusive motion of deformable particles presents a striking behavior not explained by the existing hydrodynamic treatments. ...
Getzmann Stephan - - 2009
The study investigated the processing of sound motion, employing a psychophysical motion discrimination task in combination with electroencephalography. Following stationary auditory stimulation from a central space position, the onset of left- and rightward motion elicited a specific cortical response that was lateralized to the hemisphere contralateral to the direction of ...
Pervaiz Khurram - - 2009
PURPOSE: Radioscapholunate (RSL) fusion is an effective surgical procedure for the treatment of isolated radiocarpal arthritis. Although functional wrist motion is typically preserved through the midcarpal joint, many patients are still frustrated by postoperative limitations. The purpose of this study was to evaluate motion of cadaver wrists after simulated RSL ...
Pradhan Gaurav N - - 2009
Content-based retrieval of the similar motions for the human joints has significant impact in the fields of physical medicine, biomedicine, rehabilitation, and motion therapy. In this paper, we propose an efficient indexing approach for 3-D human motion capture data, supporting queries involving both subbody motions as well as whole-body motions.
Alexander William A - - 2009
We present a classical-trajectory study of CO collisions with regular (CH3-terminated) and omega-fluorinated (CF3-terminated) alkanethiol self-assembled monolayers (SAMs) with a focus on analyzing the stereodynamics properties of the collision. The CO molecule is scattered with incident angles of either 30 degrees or 60 degrees with respect to the surface normal ...
Okawa David - - 2009
As energy demands increase, new, more direct, energy collection and utilization processes must be explored. We present a system that intrinsically combines the absorption of sunlight with the production of useful work in the form of locomotion of objects on liquids. Focused sunlight is locally absorbed by a nanostructured composite, ...
Horlings C G C - - 2009
We characterized upper trunk and pelvis motion in normal subjects and in subjects with vestibular or proprioceptive loss, to document upper body movement modes in the pitch and roll planes during quiet stance. Six bilateral vestibular loss (VL), six bilateral lower-leg proprioceptive loss (PL) and 28 healthy subjects performed four ...
Hennig D - - 2009
We consider motion of an underdamped Brownian particle in a washboard potential that is subjected to an unbiased time-periodic external field. While in the limiting deterministic system in dependence of the strength and phase of the external field directed net motion can exist; for a finite temperature the net motion ...
Hastings Mardi C - - 2009
Acoustic particle motion is believed to play a significant role in the auditory scene of fishes even though most all hearing sensitivity data are measured with respect to sound pressure level. Auditory motion thresholds have been measured in air for goldfish (Carassius auratus), oscars (Astronotus ocellatus), and toadfish (Opsanus tau) ...
Dobrowolski T - - 2009
The propagation of the kink along the curved Josephson junction is considered. It is shown that the torsion as well as curvature is responsible for the existence of the energy barrier that affects the motion of the fluxon in the junction. It is also observed that the motion of the ...
Thakur Yogesh - - 2009
A novel remote catheter navigation system has been developed to reduce physical stress and irradiation to the interventionalist during fluoroscopic X-ray guided catheter intervention. The unique teleoperated design of this system allows the interventionalist to apply conventional axial and radial motion, as used in current practice, to an input catheter ...
Cobian Daniel G DG Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI 53706-1532, - - 2009
Observational cohort design. To provide initial estimates of the frequencies and magnitudes of neck motion during daily activities in healthy subjects. Previous studies have measured the maximum excursions during recreated activities of daily living (ADLs) in laboratory settings, but there is a lack of information available on frequencies and excursions ...
Haward Barbara M - - 2009
The motions of vessels may interfere with crew activities and well-being, but the relationships between motion and the experiences of crew are not well-established. Crew responses to motions of a floating production and storage offshore vessel at a fixed location in the North Sea were studied over a 5-month period ...
Moore Thomas R - - 2009
The transient response of a flat circular plate to a sudden impact has been studied experimentally and theoretically. High-speed electronic speckle pattern interferometry reveals the presence of pulses that travel around the edge of the plate ahead of the bending motion initiated by the strike. It is found that the ...
Canseco Karl - - 2009
The purpose of this study was to quantify changes in temporal-spatial parameters and multisegmental foot/ankle kinematics in a group of patients with hallux rigidus following cheilectomy. Three-dimensional motion analysis was conducted using a 15-camera Vicon Motion Analysis System on a population of 19 patients who underwent cheilectomy for hallux rigidus. ...
Hess Robert F - - 2009
It is known that local, monocular motion (short-range motion) can produce local distortions of visual space. We wanted to know if local monocular motion was both sufficient and necessary for producing motion-based spatial distortions. We used a previously reported dichoptic motion stimulus in which the directional motion signal is not ...
Son Ji - - 2009
Motion tracking was performed during a combined phacoemulsification (PKE) and pars plana vitrectomy (PPV) procedure on a pig eyeball. The UCLA Laparoscopic Training System (UCLA-LTS), which consists of electromagnetic sensors attached to the surgical tools to measure three-dimensional spatial vectors, was modified to enable quantification of intraocular surgery motions. The ...
Bruck Susan - - 2009
Some clinicians have suggested using virtual reality environments to deliver psychological interventions to treat anxiety disorders. However, given a significant body of work on cybersickness symptoms which may arise in virtual environments - especially those involving simulated motion - we tested (a) whether being exposed to a virtual reality environment ...
Kurisu Naoyuki N Mechanical Engineering Department, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan. - - 2009
In this report, we improve the motion discrimination method from electromyogram (EMG) for a prosthetic hand and propose prosthetic hand control. In the past, we proved that a motion discrimination method using conic models could discriminate three hand motions without the incorrect discriminations that the elbow motions cause. In this ...
Yoshii Yuichi Y Orthopedic Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic, Rochester, MN 55905, - - 2009
The objective of this study was to measure the relative motion of the middle finger flexor digitorum superficialis (FDS) tendon, its adjacent subsynovial connective tissue (SSCT), and the median nerve during single-digit motion within the carpal tunnel in human cadaver specimens and to estimate the relative motions of these structures ...
Numata Kenji - - 2008
We developed an interferometric testbed to stabilize environmental motions over time scales of several hours and a length scale of 1 m. Typically, thermal and seismic motions on the ground are larger than 1 microm over these scales, affecting the precision of more sensitive measurements. To suppress such motions, we ...
Nagayama Masaharu - - 2009
As a simple example of an autonomous motor, the characteristic features of self-motion coupled with the acid-base reaction were numerically and experimentally investigated at the air/aqueous interface. Oscillatory and uniform motion were categorized as a function of the reaction order by numerical computations using a mathematical model that incorporates both ...
Arcizet Delphine - - 2008
The cellular cytoskeleton is a fascinating active network, in which Brownian motion is intercepted by distinct phases of active transport. We present a time-resolved statistical analysis dissecting phases of directed motion out of otherwise diffusive motion of tracer particles in living cells. The distribution of active lifetimes is found to ...
Lamontagne Mario - - 2009
Femoroacetabular impingement (FAI) causes abnormal contact at the anterosuperior aspect of the acetabulum in activities requiring a large hip range of motion (ROM). We addressed the following questions in this study: (1) Does FAI affect the motions of the hip and pelvis during a maximal depth squat? (2) Does FAI ...
Brangwynne Clifford P - - 2008
Random motion within the cytoplasm gives rise to molecular diffusion; this motion is essential to many biological processes. However, in addition to thermal Brownian motion, the cytoplasm also undergoes constant agitation caused by the activity of molecular motors and other nonequilibrium cellular processes. Here, we discuss recent work that suggests ...
Fukano Mako - - 2009
This study determined sagittal plane motion of the medial longitudinal arch (MLA) and lateral longitudinal arch (LLA) as well as the kinematics of the arch during landing. IRB-approved informed consent was obtained from 10 healthy male subjects (23.4 +/- 3.4 years old) who performed single leg landings from a height ...
Pawin Greg - - 2008
9,10-Dithioanthracene adsorbed on Cu(111) diffuses exclusively along the high-symmetry axis of the molecule-substrate system. Further reduction of the symmetry of the system by asymmetric methylation does not reduce the symmetry of the motion although it has a substantial effect on the diffusion rate (100-fold reduction) and renders the diffusion barrier ...
Petrella Anthony J - - 2009
Dislocation remains a major complication after THA, and range of motion before impingement is important in joint stability. Variability in implant alignment affects resultant range of motion. We used a probabilistic modeling approach to assess the effects of implant alignment variability based on manual and computer-assisted surgical (CAS) techniques on ...
Imai Hiroshi - - 2009
We performed both clinical and radiographic evaluations of 178 patients (190 hips) who had undergone cementless total hip arthroplasties using Harris-Galante I/II porous cups after an average 12-year follow-up period (range, 8-18 years). We revised 15 Harris-Galante I/II porous cups (7.8%), and the locking mechanism was broken in 10 revised ...
Gehrmann Sebastian V - - 2008
PURPOSE: Assessment of wrist motion is important in diagnosing and treating motion impairment after injuries to the wrist. Little is known of how finger posture influences the movement of the wrist. The aim of this study was to investigate the effect of finger constraints on the maximum circumduction movement of ...
Dey Krishna Kanti - - 2008
The motion of micron-sized catalytic polymer beads coated with thin film or nanoparticle form of Ni in aqueous H(2)O(2) is reported herein. In the absence of any magnetic field, the beads moved vertically upward in the medium, owing to sufficient bubbles deposited on them following catalytic decomposition of H(2)O(2) by ...
Park Woojin - - 2008
A movement index termed balance strategy vector (BSV) was developed as a research tool for studying human balance strategies during goal-directed motions. For a given motion (motion capture data), the BSV index quantitatively represents its balance strategy by computing how available body joint DoFs' angular motions affect the formation of ...
Murphy Martin J - - 2008
PURPOSE: To determine position and velocity-dependent effects in the overall accuracy of the Calypso Electromagnetic localization system, under conditions that emulate transponder motion during normal free breathing. METHODS AND MATERIALS: Three localization transponders were mounted on a remote-controlled turntable that could move the transponders along a circular trajectory at speeds ...
Yoshii Yuichi Y Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, - - 2008
The purpose of this study was to measure the effect of wrist position on the relative motion of the middle finger flexor digitorum superficialis (FDS) tendon, subsynovial connective tissue (SSCT), median nerve, and flexor retinaculum during simulated active finger motion. The relative motion of each tissue was measured by fluoroscopy ...
Li Jibiao - - 2008
Surface diffusion of a water monomer is not as simple as previously imagined. Using state-of-the-art density functional theory, we have obtained important molecular insights relating to the elementary steps of atop-to-atop diffusion of a water monomer. We provide theoretical evidence for an anisotropic effect of rotation-jump coupling on Pd{100}; the ...
Tang Jie - - 2008
The purposes were to examine the workspace of the thumb during its operational (submaximal and random) movement and to compare the operational workspace with its maximal workspace. Fifteen female subjects with asymptomatic hands performed the thumb circumduction and operational motion. Linear and angular measurements of the thumb were obtained by ...
Hennig D - - 2008
We study the motion of a dimer in a one-dimensional spatially periodic washboard potential. The tilt of the latter is time-periodically modulated by an ac field. We focus interest on the detrapping of the (static) ground state solution of the dimer caused by the ac field. Moreover, we demonstrate that ...
Hiraoka Shuichi - - 2008
For a long-range transmission of motion between two movable parts apart from each other, transmitters that can precisely correlate these two motions should be properly incorporated into the system. However, such a motional relay is yet to be realized in artificial systems because of the lack of reliable methodologies for ...
Dhar, Prajnaparamita
Nature presents active components in the form of proteins and molecular motors that are involved in locomotion and inter compartmental transport. Inspired by nature, this dissertation focuses on presenting experimental means to understand the motion of active components at interfaces. Active components are defined as components that either autonomously move ...
Conley William G - - 2008
Previous works on suspended carbon nanotube and nanowire resonators assume a priori that they oscillate in a single plane. We explore the nonlinear dynamics of such resonators and demonstrate that they can suddenly transition from a planar motion to a whirling, "jump rope" like motion. We identify nondimensional gate voltage, ...
Kwon Taesoo - - 2008
In this paper, we deal with the problem of synthesizing novel motions of standing-up martial arts such as Kickboxing, Karate, and Taekwondo performed by a pair of human-like characters while reflecting their interactions. Adopting an example-based paradigm, we address three non-trivial issues embedded in this problem: motion modeling, interaction modeling, ...
Butler John - - 2008
Flextensional transducers use leveraged shell motion to produce enhanced acoustic radiation from compact sources, which are often used in low frequency underwater sound applications. The most commonly used flextensional is the Class IV where an oval shell is driven along its major axis by a stack of piezoelectric ceramic elements. ...
Holmes Michael W - - 2008
Seafaring occupations have been shown to place operators at an increased risk for injury. The purpose of this study was to understand better the demands of a moving environment on the ability of a person to perform specific lifting tasks. Subjects lifted a 15-kg load under four different lifting conditions. ...
Smith Christian - - 2008
In this paper we present ongoing work on how to incorporate human motion models into the design of a high performance teleoperation platform. A short description of human motion models used for ball-catching is followed by a more detailed study of a teleoperation platform on which to conduct experiments. Also, ...
Yoon Sung Won - - 2008
The electro-conductive fabric (e-textile or e-fabric) as an electrode for ECG measurement is one of the best application for ubiquitous healthcare system. However, it is difficult to measure the bio-signal due to its sensitivity variation caused by impedance change, especially by motion of the subject. In this paper, adaptive motion ...
Franko Orrin I - - 2008
PURPOSE: Motion-limiting wrist procedures have demonstrated both efficacy and reproducibility as a treatment for alleviating painful wrist conditions, but the reduction of pain achieved is necessarily accompanied by a marked loss of wrist motion. However, no study demonstrates a functional difference between variable degrees of wrist motion. The hypothesis of ...
Kessler Oliver - - 2008
Hip range of motion after total hip arthroplasty has been shown to be dependent on prosthetic design and component placement. We hypothesized that bony anatomy would significantly affect range of motion. Computer models of a current generation hip arthroplasty design were virtually implanted in a model of pelvis and femur ...
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