background and objectives: scapular stabilization and neuromuscular control provide an important parameter to characterize shoulder function during dynamic activities. many studies have confirmed the effect of the loading on scapular position and scapulohumeral rhythm. therefore, the evaluation of stabilizer muscles involvement in scapular asymmetry may assist in the development of clinical exa...

The first aim of this investigation was to quantify the distribution of trapezius muscle activity with different scapular postures while seated. The second aim of this investigation was to examine the association between changes in cervical and scapular posture when attempting to recruit different subdivisions of the trapezius muscle. Cervical posture, scapular posture, and trapezius muscle act...

CONTEXT The stability of the scapula in relation to the entire moving upper extremity is the key in the throwing sequence. The importance of scapular positioning in volleyball players has been well documented in the literature, but no one has compared scapular positioning between volleyball players and sedentary people. OBJECTIVE To compare measurements of scapular mobility obtained using the...

Background: Altered scapular kinematics in individuals with rounded shoulder posture (RSP) may affect acromiohumeral distance (AHD). The purpose of this study was to compare AHD and scapular dyskinesis prevalence in individuals with and without RSP.    Methods: A total of 44 women (RSP, n=21; control, n=23) participated in the study. RSP was assessed by measuring acromion to table distance (AT...

BACKGROUND Arm elevation is composed of glenohumeral and scapulothoracic motion. Many reports have addressed changes of scapular position across a spectrum of shoulder disease. However, no study has examined changes in scapular position after reverse total shoulder arthroplasty (RTSA). The purpose of this study was to evaluate the changes in scapular position after RTSA compared to patients' co...

OBJECTIVE This clinical study investigated the effects of an individually fabricated prone positioner on heart rate, respiratory rate, and scapular position of premature infants in the neonatal intensive care unit. The prone positioner consisted of dense foam with cutouts to position the shoulders forward and toward midline. METHOD Six measurements of scapular rotation, respiratory rate, hear...

Proper scapular motion is crucial for normal shoulder mechanics. Scapular motion affects glenohumeral joint function during throwing, yet little is known about this dynamic activity. Asymptomatic subjects (10 male and 10 female), ages 21 to 45, were analyzed. Electromagnetic surface sensors on the sternum, acromion, and humerus were used to collect 3-D motion data during three trials of low-vel...

BACKGROUND Altered scapular rotation and position have been named scapular dyskinesis. Visual dynamic assessment could be applied to classify this alteration based on the clinical observation of the winging of the inferior medial scapular border (Type I) or of the prominence of the entire medial border (Type II), or by the excessive superior translation of the scapula (Type III). OBJECTIVE Th...

Proposed New Method: A Pro 360 digital inclinometer (Macklanburg Duncan, Oklahoma City, OK) was used for 2-D static measurements of scapular upward rotation during humeral elevation. The instrument was modified by adding two wooden locator rods to its inferior surface. These rods had Y shaped ends, which were placed over the root of the scapular spine and the posterolateral acromion during each...