Characterizing the quasi-stiffness and work of lower extremity joints is critical for evaluating human locomotion and designing assistive devices such as prostheses and orthoses intended to emulate the biological behavior of human legs. This work aims to establish statistical models that allow us to predict the ankle quasi-stiffness and net mechanical work for adults walking on level ground. Du...

PURPOSE The aim of this study was to evaluate the performance of strain elastography in an elasticity phantom and to assess which factors influenced visual scoring, strain histograms and strain ratios. Furthermore this study aimed to evaluate the effect of observer experience on visual scorings. MATERIALS AND METHODS Two operators examined 20 targets of various stiffness and size (16.7 to 2.5...

This study aims to identify the fatigue lifetime of a thin-walled hollow spherical rubber isolator subjected harmonic and random vibrations. Firstly, nonlinear characteristics materials are tested analyzed through vibration experiments. The relationship among stiffness, damping, relative displacement amplitude is established. Secondly, an accelerated experiment under excitation carried out. cor...

we present a 23-year-old man with distal humerus osteoid osteoma referring to our hospital with pain and progressive stiffness. the patient has been suffering from the disease for two years without a certain diagnosis. the radiographies of elbow did not reveal the pathology but further ct scan and mri studies demonstrated the tumor. the en block resection of the tumor resolved the pain immediat...