The purpose of this study was to identify the kinematic and kinetic strategies used by patients with unilateral triple arthrodesis or subtalar fusion during level walking, stair ascent, stair descent and to determine the influence of these different conditions on kinematics and kinetics. Nine subjects with unilateral triple or subtalar fusion and five normal control subjects were recruited for ...

[Purpose] An ankle-foot-orthosis (AFO) is an assistive brace that allows stroke patients to achieve an independent gait. Therefore, we examined whether or not the orthotic angle for plantar flexion limitation affects the kinematic parameters of the hip and knee joints on the affected side of patients with stroke. [Subjects and Methods] Fifteen patients with chronic hemiplegia were recruited for...

SIMILAR PAIN AND STRENGTH RESPONSES TO AN EXERCISE INTERVENTION 1 Kathryn Mills, Sean Osis, Blayne Hettinga and Reed Ferber Running Injury Clinic, Faculty of Kinesiology, University of Calgary, Calgary, Alberta Canada email: [email protected] INTRODUCTION Knee osteoarthritis (OA) is a prevalent and disabling disease defined by disrepair of joint tissue and subsequent breakdown of bone...

Most in vivo knee kinematic analyses are based on external markers attached to the shank and the thigh. However, the positioning of the markers and skin artifacts can affect the kinematic parameters of the bones true movement. The aim of the present study was to develop and to use a protocol and a modeling method that allows the computation of the relative motion between the bones and the marke...

BACKGROUND Anterior cruciate ligament (ACL) tears are one of the most common injuries among athletes. However, the ability to fully restore rotational stability with ACL reconstruction (ACLR) remains a challenge, as evidenced by the persistence of rotational instability in up to 25% of patients after surgery. Advocacy for reconstruction of the anterolateral ligament (ALL) is rapidly increasing ...

A three-dimensional (3D) knee joint computational model was developed and validated to predict knee joint contact forces and pressures for different degrees of malalignment. A 3D computational knee model was created from high-resolution radiological images to emulate passive sagittal rotation (full-extension to 65°-flexion) and weight acceptance. A cadaveric knee mounted on a six-degree-of-free...

Ultra High Molecular Weight Polyethylene (UHMWPE) remains the only bearing surface of choice in total knee replacements (TKR). While excellent medium term results can be found for knee replacements at ten years, there remains concerns about wear debris induced osteolysis in the longer term, particularly in young and more active patients. It has been shown previously that the wear of fixed beari...

Knee bracing has been used to realize a variety of functional outcomes in both sport and rehabilitation application. Much of the literature focuses on the effect of knee misalignment, force reduction and superiority of custom braces over commercial over-the-counter braces. Efforts on developing exoskeletons to serve as knee augmentation systems emphasize actuation of joints, which then adds to ...