Abstract This paper proposes a novel reconfigurable exoskeleton for ankle rehabilitation, which is capable of realizing both static and dynamic rehabilitation exercises. The conceptual design based on reduced representation that regards the ankle–foot complex as movable spherical joint, so to better replicate physical scenario. screw theory-based analysis results indicate in modes, proposed aut...

Ankle inversions have been studied extensively during standing conditions. However, inversion traumas occur during more dynamic conditions, like walking. Therefore in this study sudden ankle inversions were elicited in 12 healthy subjects who stepped on a trap door while walking on a treadmill. First, 10 control trials (0 degrees of rotation) were presented. Then, 20 stimulus (25 degrees of rot...

This study explored whether artificial neural networks (ANN) can be used to quantify the motor-sensory relationship during postural disturbance. An ANN model was constructed with seven mechanical stimuli to the visual, vestibular and somatosensory systems (i.e., head angular and linear accelerations, eye-target distance, ankle joint rotation and velocity, as well as normal and shear ground cont...

BACKGROUND The scientific evidence behind the mechanical function of foot orthoses is still controversial. Research studies that have investigated the kinematic effect of foot orthoses on the lower extremity have shown variable results, with orthoses causing either no significant change or a small significant change in foot kinematics. METHODS The right limbs of 12 healthy asymptomatic indivi...

OBJECTIVE To determine differences in strength and range of motion (ROM) between participants who exhibit medial knee displacement (MKD) during a squat that is corrected by a heel lift and those who do not. DESIGN Case control. SETTING Sports medicine research laboratory. PARTICIPANTS Thirty-seven healthy subjects (control, 19; MKD, 18) with no lower-extremity injury in the past 6 months ...

Muscle volume is known to correlate with maximal joint torque in humans, but the role of muscle moment arm in determining maximal torque is less clear. Moderate correlations have been reported between maximal isometric knee extensor torque and knee extensor moment arm, but no such observations have been made for the ankle joint. It has been suggested that smaller muscle moment arms may enhance ...

PURPOSE The aim of the study was to determine the relationships between time of running over a 15-25 m section of a 30-meter run along a straight line and changes in the angle and angular velocity observed in ankle, knee and hip joints. Therefore, the authors attempted to answer the question of whether a technique of lower limbs movement during the phase of sprint maximum velocity significantly...

: investigating the mechanical behaviour of a healthy human ankle shows that it can be simulated by a mechanism composed of simple elements such as spring, and actuator. hence, appropriate design of this mechanism can be resulted to an artificial ankle that can help amputees properly. researches show that whatever the biomechanical behaviour of artificial ankle is similar to that of natural ank...

Background: Ankle fractures represent 10% of all with an incidence around 137/105 population per year. These are most the times associated syndesmotic injuries due to rotation limb foot fixed/axial loading as a result high velocity injuries. The syndesmosis is ruptured torsional movement talus or severe abduction force. Diastasis requires rupture three strong ligaments and interosseous membrane...

It is difficult to find publications comparing rotation kinematics in large joints of the lower limbs and pelvis during gait in patients after single-bundle (SB) reconstruction of the anterior cruciate ligament (ACLR) with double-bundle (DB) ACLR of the knee. The aim of this study was to compare rotation kinematics in ankle, knee, and hip joints and the pelvis during gait in the 14th week after...