SHOULDER HORIZONTAL ABDUCTION MANUAL

The purpose and method of the experiment were described thoroughly, and those who agreed to participate in the experiment were selected. This study included practice students who visited Design Hospital rehabilitation center in Jeonju in April 2019.

SHOULDER HORIZONTAL ABDUCTION MANUAL

In this study, we aimed to investigate differences of shoulder IR and ER ROM resulting from postural change in manual scapular stabilization in prone, hook-lying, sitting, and standing positions in healthy young adults. Keating and Matyas showed differences in the muscular strength of the knee extensor resulting from posture changes during knee extension operation. Joint movement with gravity is thought to increase the measurement value of ROM by applying passive forces. However, the measurements in these previous studies did not take into account the potential effect of gravity upon posture change for shoulder movement. Previous studies have applied manual scapular stabilization that minimizes the movement of scapulothoracic joints in hook-lying or standing position to accurately measure ROM of shoulder rotation. ER rises against gravity up to a range of 90В°, but it is aided by gravity beyond 90В°. also measures shoulder rotation in standing position so that IR is aided by gravity. , another method of measuring shoulder rotation ROM involves using a goniometer in standing position with the shoulder in 90В° abduction and elbow in 90В° flexion for persons with shoulder dislocation. Assuming a hook- lying position is the general assessment procedure in measuring ROM shoulder rotation. To measure shoulder rotation ROM, a goniometer was used to assess elite junior tennis players and baseball players in the hook-lying position, the shoulder in 90В° of abduction, the elbow at 90В° of flexion.

Therefore, a clinical assessment of the rotation of the shoulder is needed.

Such shoulder disease causes limited internal rotation (IR) and external rotation (ER) ROM of the shoulder joint. Shoulder disease typically include rotator cuff tear or shoulder impingement syndrome. However, if one of these joints experiences a problem or one of the associated muscles is weakened, the movement control of the shoulder complex may be reduced to produce an abnormal shoulder movement, which limits the movement of the shoulder. In addition, there are 16 muscles attached to the shoulder complex, and the range of shoulder movement is controlled by these muscles. Therefore, the joints of the shoulder complex are intimately interconnected to facilitate maximum shoulder movement. The scapulothoracic joint of the shoulder complex performs the appropriate scapula movement by cooperative movements with the sternoclavicular joint and the acromio-clavicular joint, and this affects the movement of the humerus in the glenohumeral joint. Therefore, the measurement of limited ROM can be regarded as one of the important clinical test methods for assessing disorder of intra-articular or surrounding tissue lesions or the effectiveness of interventions. This is an important indicator in the assessment of a medical disorder or to assess the degree of improvement of an intervention. Range of motion (ROM) is the amount of movement of a joint measured when moving the legs and arms. Keywords : External rotation, Internal rotation, Shoulder, Range of motion Our findings suggest that postural change should be considered in order to increase the strength or range of motion of the internal and external rotation of the patient's shoulder joint. In active and passive ER, there was a statistically significant difference between prone and sitting, prone and standing, hook-lying and sitting, hook-lying and standing, and sitting and standing position ( p<0.05). In active and passive IR with posture change, there was difference in average value but with no statistical significance. In contrast, the higher the posture, the greater the average value of the external rotation angle. The lower the posture, the greater the average value of IR angle. The repeated measures analysis of variance was used to compare between-group differences in postural change. Measurements of shoulder rotation according to postural change were performed in prone, hook-lying, sitting, and standing positions. A clinometer was used to measure shoulder rotation. This study included healthy young adults who agreed to participate after a thorough explanation about the study purpose and methods. We aimed to investigate differences of range of motion in measuring shoulder internal rotation (IR) and external rotation (ER) resulting from posture change in manual scapular stabilization in prone, hook-lying, sitting, and standing positions in healthy young adults.

Shoulder horizontal abduction