INTRODUCTION Quantifying healthy shoulder motion enables comparisons to special (e.g. athletic, injured) populations and allows for the identification of mechanisms of diminished performance. Although previous work has documented shoulder motion using bone pins [1], the overall applicability is limited due to small sample sizes, and because the majority of shoulder kinematic studies utilize ski...

The elements of an algorithm are presented which predicts for some simple forms (circles and ellipses) the kinematic and figural aspects of the trajectories of the human wrist when these are drawn in any arbitrary plane of free, three-dimensional space. The algorithm is based on theoretical considerations and experimental data and specifies in a unique way the angular motion at the shoulder and...

Disorders of the shoulder complex can be accompanied by changes in the movement pattern of the scapula. However, scapular motion is difficult to measure. A possible non-invasive method for dynamic three-dimensional kinematic measurement of the human scapula is the use of a marker cluster placed on the flat part of the acromion. A small light-weight acromion marker cluster (AMC) is presented in ...

QUESTION Can real-time visual feedback facilitate the activity of serratus anterior in individuals with scapular winging during shoulder flexion? DESIGN Comparative, repeated-measures experimental study. PARTICIPANTS Nineteen subjects with scapular winging. INTERVENTION Participants performed isometric shoulder flexion at 60° and 90° with and without real-time visual feedback using a vide...

normal 0 false false false en-us x-none fa microsoftinternetexplorer4 background : strength improvement of the shoulder muscles is a major goal in rehabilitation or athletic conditioning programs. the purpose of this study was to determine the effect of shoulder core exercises on the isometric torque of glenohumeral joint movements. methods : a total of 36 healthy females with no history of sho...

The purpose of this manuscript is to review the knowledge of scapular positioning at rest and scapular movement in different anatomic planes in asymptomatic subjects and patients with shoulder impingement syndrome (SIS) and glenohumeral shoulder instability. We reviewed the literature for all biomechanical and kinematic studies using keywords for impingement syndrome, shoulder instability, and ...

OBJECTIVE To compare three dimensional movement patterns of the affected and non-affected shoulder in patients with a frozen shoulder before and after physical therapy. METHODS Patients with a unilateral frozen shoulder were assessed before and after three months of treatment. Three dimensional movement analysis was performed with the "Flock of Birds" electromagnetic tracking device while the...

Taping is commonly used in the conservative treatment of shoulder impingement syndrome. However, the underlying mechanism of taping and its effect on kinematics are not yet understood and there is little evidence to support its use. There are two main taping techniques used in physical rehabilitation, Rigid and Elastic taping. In this study, a motion capture system was used to track reflective ...

Objectives: The purpose of this study was to compare scapular kinematics during elevation phase of abduction, flexion, and scapular plane elevation phase between fifteen persons with shoulder impingement syndrome (SIS) and thirteen persons without it. Methods: Values of scapular kinematics include scapular superior and lateral translations, upward rotation, external rotation, and posterior t...