Vertebrates and arthropods are both capable of load compensation during aimed limb movements, such as reaching and grooming. We measured the kinematics and activity of individual motoneurons in loaded and unloaded leg movements in an insect. To evaluate the role of active and passive musculoskeletal properties in aiming and load compensation, we used a neuromechanical model of the femur-tibia j...

In this paper we propose a method for human joint torque estimation with surfaceelectromyogram (sEMG) during dynamic joint movements. sEMG measurement is non-invasive and costs less than external force measurement. Typical torque estimation methods from EMG are available for isometric movements. Our method works also during dynamic movement and outputs the torque timehistory data. Their propose...

CONTEXT Using constant, variable, and absolute error to measure movement accuracy might provide a more complete description of joint position sense than any of these values alone. OBJECTIVE To determine the effect of loaded movements and type of feedback on shoulder joint position sense and movement velocity. DESIGN Applied study with repeated measures comparing type of feedback and the pre...

introduction a discoid medial meniscus is a rare pathology of the knee joint, and is even rarer when it presents bilaterally with clinical symptoms. case presentation we present the case of a 38-year-old female with symptomatic bilateral discoid medial meniscus. magnetic resonance imaging (mri) showed complete discoid meniscus in one knee and incomplete, on the other side. the mri findings were...

Present data on carpal kinematics and carpal ligament behaviour are limited to flexion and deviation movements of the hand. These motions do not represent all the wrist-joint motions which are important for the activities of daily living. The goal of this project was to obtain insight into carpal kinematics and carpal ligament behaviour during motions of the hand covering the full range of moti...

Recent studies of motor coordination have emphasized the importance of the mechanical properties of muscle in both load compensation-and in the control of movement. Teleologically, different mechanical characteristics may be optimal for different tasks. For example, a skiier may wish to adjust the stiffness of his legs in accordance with the terrain and snow conditions. How, and to what extent ...

BACKGROUND The increasing number of opportunities for human-robot interactions in various settings, from industry through home use to rehabilitation, creates a need to understand how to best personalize human-robot interactions to fit both the user and the task at hand. In the current experiment, we explored a human-robot collaborative task of joint movement, in the context of an interactive ga...

Frozen shoulder is a chronic condition characterized by pain in the shoulder and restriction of movements in all directions. Some patients are left with long-term limitation of shoulder joint activity with various severities, which results in reduced quality of life. Currently, there is a paucity of literature on the molecular biology of frozen shoulder, and the molecular biological mechanism f...

Purpose of this work is to present a probabilistic approach to assess the muscular activity during eccentric and concentric contractions in specific joint angle positions out of series of movements. The method is utilized to exemplarily retrieve an individualized relationship of surface electromyogram (sEMG) and elbow joint angle in elbow flexion during dynamic movements to finally show the dif...