8 Abstract 9 Purpose The aim of this study was to provide guidance 10 on the safe zones for the exposure of the proximal radius by 11 measuring the distance from the PIN to various anatomical 12 landmarks in the proximal forearm in pronation and 13 supination. 14 Methods Twenty cadaveric arms were used for this study. 15 On the anterior aspect of the forearm, the distance between 16 insertion o...

BACKGROUND Elbow pain and elbow injuries are common in youth baseball players. It is not clear whether pitching experience and/or age creates biomechanical differences at the elbow and whether these differences place an athlete at greater risk. HYPOTHESES (1) Youth pitchers will have differing elbow kinematics with regard to flexion/extension, internal/external rotation, and pronation/supinat...

Reaching to visual targets engages the nervous system in a series of transformations between sensory information and motor commands. That which remains to be determined is the extent to which the processes that mediate sensorimotor adaptation to novel environments engage neural circuits that represent the required movement in joint-based or muscle-based coordinate systems. We sought to establis...

Gyro sensor has been used to measure foot pronation during running with reliable results in previous studies, and the signals were not affected by the vibration of heel strikes. The purpose of this study was to observe the kinematic changes of the foot during intense running using a 3-axis gyro sensor. Fifteen male participants (average age: 24.5 ± 1.7 years; mean height: 174.1 ± 3.3 cm; mean b...

The hand pronation phenomenon due to a pyramidal tract lesion is a sign commonly used for identifying a mild paresis, but the first descriptions of this maneuver seem to have been only partially investigated by the historians of neuroscience. Here we illustrate that this sign was most probably originally described by Adolf Strümpell (1853-1925) in 1901 and subsequently re-proposed by the illust...

BACKGROUND Presentation of proximal radioulnar synostosis varies from cosmetic concerns with no functional limitations to significant pronation deformity which hampers activities of daily living. Surgical management must be considered based on the position of the forearm and functional limitations. We describe the surgical technique, results, and complications of excision of the radial head alo...

Thing is a robotic hand with three digits, a pronating opposable thumb, and a 2 D.O.F. wrist. Designed to more accurately model human hand positioning and grasping capabilities than previous models, Thing is controlled by a flex-sensor-equipped glove which relays the user’s finger positions by means of flex sensors. It will also, by time of publication, incorporate an image-processing system fo...

The biomechanical mechanisms that link foot structure to injuries of the musculoskeletal system during gait are not well understood. This study had two parts. The purpose of part one was to determine the relation between clinical rearfoot and forefoot angles and foot angles as they make contact with the ground. The purpose of part two was to determine the effects of large vs. moderate values of...