Proprioceptive signals from peripheral mechanoreceptors form the basis for bodily perception and are known to be essential for motor control. However we still have an incomplete understanding of how proprioception differs between joints, whether it differs among the various degrees-of-freedom (DoFs) within a particular joint, and how such differences affect motor control and learning. We here i...

background there is considerable variation in the treatment of distal forearm torus fractures (dftf), from soft bandaging to cast immobilization. objectives the present study aimed to show the result of removable wrist splint (rws) in the treatment of these fractures. materials and methods one hundred forty two children aged less than 17 years old with dftf were studied prospectively. these pat...

Muscle tone was tested at the shoulders and wrists of 49 randomly selected poststroke patients with the use of resting joint position (SJP and WJP), resistance to passive movement or stiffness (SRM and WRM), and angle of appearance of resistance (SAR and WAR). Subjects were tested while seated with their arm supported in a suspension sling adapted for free movement. Five of the first and immedi...

PURPOSE The purpose of this report is to review the results of arthroscopic resection of dorsal wrist ganglions. METHODS Forty-one patients with dorsal wrist ganglions had arthroscopic resection: 24 women and 17 men. The average patient age was 29.8 years. All of the patients had some or all of the following: pain, localized swelling, and limited range of motion. Along with clinical examinati...

Nine children with spastic hemiplegic cerebral palsy underwent 24 sessions of wrist muscles strengthening in the extended wrist range aided by electrostimulation. Isometric strength of flexors and extensors was registered in three wrist positions (30 degrees of flexion, neutral, and 30 degrees of extension) to infer on angle-torque curves. Passive stiffness of wrist flexors and wrist flexion an...

In the stationary hand, static joint-position sense originates from multimodal somatosensory input (e.g., joint, skin, and muscle). In the moving hand, however, it is uncertain how movement sense arises from these different submodalities of proprioceptors. In contrast to static-position sense, movement sense includes multiple parameters such as motion detection, direction, joint angle, and velo...

The present study investigated the effects of grip on changes in the median nerve cross-sectional area (MNCSA) and median nerve diameter in the radial-ulnar direction (D1) and dorsal-palmar direction (D2) at three wrist angles. Twenty-nine healthy participants (19 men [mean age, 24.2 ± 1.6 years]; 10 women [mean age, 24.0 ± 1.6 years]) were recruited. The median nerve was examined at the proxim...

OBJECTIVES The primary objective was to investigate the effects of continuous typing on median nerve changes at the carpal tunnel region at two different keyboard slopes (0° and 20°). The secondary objective was to investigate the differences in wrist kinematics and the changes in wrist anthropometric measurements when typing at the two different keyboard slopes. METHODS Fifteen healthy right...

Carpal/Wrist instability is the result of a large variety of conditions. Any alteration of the shape of the wrist bones or the connections between them can affect the dynamic balance of forces and the wrists unique multiplane movements. Sensorimotor function is a term used to describe sensory, motor and central processes pertaining to joint stability. Wrist joint proprioception and sensorimotor...

A closed-loop FES system for surface electrode stimulation was developed using an electromagnetic 3-D position and orientation sensor to measure joint angles. Our previous goniometer-based closed-loop FES system was found to be effective through controlling wrist joint movements of neurologically intact subjects. However, the previous system could not measure angles of the forearm pronation/sup...