Timing is an important part in the analysis of alpine skiing technique. Key events extracted from dynamics and kinematics of ski were previously proposed, but timing of body segments kinematics is also required to understand the biomechanics and to assess the performance. In this study, we proposed a new method based on inertial sensors to measure timing parameters based on body segments kinema...

Improvements in task performance due to repeated testing have previously been documented in healthy and patient populations. The existence of a similar change in performance due to repeated testing has not been previously investigated at the level of gait kinematics in the post-stroke population. The presence of such changes may define the number of testing sessions necessary for measuring a st...

Background Accurate measurements of skeletal kinematics of the foot would increase our understanding on the interaction between foot and footwear. Previously foot kinematics was measured using reflective markers but the method had inherent limitation of skin marker-based methods. Recently fluoroscopic imaging-based methods has been developed and widely used to measure knee kinematics [1,2]. We ...

OBJECTIVE To examine the influence of in-season injury prevention training on hip and knee kinematics during a landing task. DESIGN Longitudinal pre-post intervention study. SETTING Testing sessions were conducted in a biomechanics research laboratory. PARTICIPANTS Eighteen female soccer players between the ages of 14 and 17 participated in this study. All subjects were healthy with no cu...

The lower limb sidestepping kinematics of 20 elite female athletes were calculated using: 1) an established direct kinematic (DK) model (criterion) and, 2) two inverse kinematic (IK) models; one with and one without participant-specific joint co-ordinates prescribed during model preparation. The aim of this research was to determine whether prescribing joint co-ordinates influences the accuracy...

INTRODUCTION A successful total knee arthroplasty (TKA) is dependent on many factors, but component alignment is particularly critical. Aligning the femoral component parallel to the transepicondylar axis is generally regarded as the optimal rotational position, since it has been shown to produce a balanced joint, optimize patellar tracking, and minimize patellofemoral shear forces [1,2] the fe...

INTRODUCTION Knee osteoarthritis (OA) can be classified as primary (nontraumatic) or secondary (post-traumatic). Variations in radiological features exist between these knee OA classifications [1]. Differences in gait mechanics have not been investigated and this information may provide knowledge about the role of gait in OA initiation and progression. The purpose was to compare gait kinematics...

The purpose of this commentary is to describe the multifactorial relationships between hip-joint strength, range of motion, kinetics/kinematics, and various knee pathologies, specifically as they relate across an individual's life span. Understanding the interdependence between the hip and knee joints in respect to functional activity is a necessary and relevant aspect for clinicians to investi...

INTRODUCTION ACL injury has reached epidemic levels. In the United States, it is estimated that 100,000200,000 people sustain an ACL injury annually. ACL injury is thought to alter knee mechanics, disrupting cartilage metabolism. These changes in knee joint mechanics have been linked to increased incidence of osteoarthritis (OA); however, the precise mechanism is poorly understood (Tapper 2005)...