.................................................................................................................... 2 INTRODUCTION ............................................................................................................. 4 STATEMENT OF THE PROBLEM .................................................................................. 5 SIGNIFICANCE OF THE PROBLEM ..................

While gender-based differences in knee joint anatomies/laxities are well documented, the potential for them to precipitate gender-dimorphic ACL loading and resultant injury risk has not been considered. To this end, we generated gender-specific models of ACL strain as a function of any six degrees of freedom (6DOF) knee joint load state via a combined cadaveric and analytical approach. Continuo...

INTRODUCTION The distal radioulnar joint is of paramount importance for the proper function of the upper extremity. There is a wide variety of procedures for the treatment of its advanced pathology but none of them is capable of providing a stable load-bearing joint. CLINICAL CASE We present the case of a 54 year old man who was treated by a semiconstrained bipolar distal radioulnar joint art...

A redundant robot has more degrees of freedom than what is needed to uniquely position the robot end-effector. In practical applications the extra degrees of fieedom increase the orientation and reach of the robot. The load carrying capacity of a single robot can be increased by cooperative manipulation of the load by two or more robots. In this paper we develop an adaptive control scheme for k...

BACKGROUND Previous studies have consistently reported that decreasing seat height increases the peak hip and knee joint moments; however, these findings may not apply to biomechanical changes at very low seat heights. The purpose of this study, therefore, was to examine the effect of a large range of seat heights on peak joint moments of the lower limb during a sit-to-stand (STS) movement. M...

Several anatomical anterior cruciate ligament (ACL) reconstruction techniques have been proposed to restore normal joint kinematics. However, the relative superiorities of these techniques with one another and traditional single-bundle reconstructions are unclear. Kinematic responses of five previously reported reconstruction techniques (single-bundle reconstruction using a bone-patellar tendon...

STUDY DESIGN Single-group repeated measures design. OBJECTIVE To quantify patellofemoral joint reaction forces and stress while squatting with and without an external load. BACKGROUND Although squatting exercises in the rehabilitation setting are often executed to a relatively shallow depth in order to avoid the higher joint forces associated with increased knee flexion, objective criteria ...

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...

Positive joint torque feedback can compensate the detrimental eeects of load torques on position tracking performance. However, with (real world) non-ideal torque sources, simple unity gain positive torque feedback can actually deteriorate the performance, or even result in instability. An H 1 joint torque feedback is proposed which takes the dynamics and uncertainty of the actuator into accoun...

Positive joint torque feedback can compensate the detrimental e ects of load torques on position track ing performance However with real world non ideal torque sources simple unity gain positive torque feed back can actually deteriorate the performance or even result in instability An H joint torque feedback is proposed which takes the dynamics and uncertainty of the actuator into account and m...