Scapular dyskinesis is an alteration in the normal position or motion of the scapula during coupled scapulohumeral movements. It occurs in a large number of injuries involving the shoulder joint and often is caused by injuries that result in the inhibition or disorganization of activation patterns in scapular stabilizing muscles. It may increase the functional deficit associated with shoulder i...

Knowledge of three-dimensional scapular movements is essential to understand post-stroke shoulder pain. The goal of the present work is to determine the feasibility and the within and between session reliability of a movement protocol for three-dimensional scapular movement analysis in stroke patients with mild to moderate impairment, using an optoelectronic measurement system. Scapular kinemat...

[Purpose] The purpose of this study was to investigate the effect of dual chest banding using elastic bands on the shoulder pain of a scapular dyskinesis patient with winging and an elevated scapula. [Subject] The subject was a 40-year-old male scapular dyskinesis patient with winging, an elevated scapula, and shoulder pain. [Methods] This study developed a method of dual chest banding using el...

[Purpose] The purpose of this study was to investigate the intra-rater reliability of measures of scapular protraction strength using a novel method. [Subjects] Forty-nine healthy subjects participated in this study. [Methods] Subjects performed maximal isometric scapular protraction on the left and right sides in the supine and seated positions. During scapular protraction, resistance was appl...

BACKGROUND The impact of infraglenoidal scapular notching in reversed total shoulder arthroplasty (RTSA) is still controversially discussed. Our goal was to evaluate its potential influence on subjective shoulder stability and clinical outcome. We hypothesized that subjective instability and clinical outcome after implantation of RTSA correlates with objective scapular notching. METHODS Sixty...

Shoulder tendon injuries are frequently seen in the presence of abnormal scapular motion, termed scapular dyskinesis. The cause and effect relationship between scapular dyskinesis and shoulder injury has not been directly defined. We developed and used an animal model to examine the initiation and progression of pathological changes in the rotator cuff and biceps tendon. Sixty male Sprague-Dawl...

OBJECTIVE To determine the effects of fatigue during an external rotation task on 3-dimensional scapular kinematics. DESIGN A single-group, pretest-posttest measurement design. SETTING Research laboratory. PARTICIPANTS Thirty healthy subjects. INTERVENTIONS Not applicable. MAIN OUTCOME MEASURES Three-dimensional scapular kinematics were recorded with a Polhemus magnetic tracking devic...

The immediate goal of this study was to develop and validate a noninvasive, computational surface mapping approach for measuring scapular kinematics by using available motion capture technology in an innovative manner. The long-term goal is to facilitate clinical determination of the role of the scapula in children with brachial plexus birth palsy (BPBP). The population for this study consisted...