Comparing Scapular Position and Scapular Dyskinesis in Individuals with and without Rounded Shoulder Posture

Abstract

Purpose: Altered kinematics of the scapula or scapular dyskinesis (downward rotation, anterior tilt, and protraction) contribute to impingement syndrome by decreasing the subacromial space. Given the critical role of scapular position and movement in the function of the shoulder, the aim of this study was to compare scapular position and dyskinesis in individuals with and without rounded shoulder posture. Methods:By employing the convenience sampling method, 21 individuals with rounded shoulder posture (11 females and 10 males; average age: 22.95 years) and 23 individuals without rounded shoulder posture (13 females and 10 males; average age: 22.43 years) were enrolled in this study through a case-control design.The scapular dyskinesis test was used to observe alterations in scapulohumeral rhythm in the sagittal and frontal planes of the arm. Also, the scapular position was examined according to the Kibler test. Data were analyzed using SPSS 21. We used the Independent t-test and Mann-Whitney test to compare the differences between the two groups.Results: There were no differences in scapular dyskinesis between the two groups (P>0.05). The prevalence of subtle or obvious scapular dyskinesis in individuals with rounded shoulder posture was greater than those without rounded shoulder posture, but the difference was not statistically significant. Furthermore, no significant difference was found in static scapular position (Kibler test) of the dominant and non-dominant sides between the two groups (P>0.05). Conclusion:There were no significant differences in scapular position and scapular movement pattern between the individuals with and without rounded shoulder posture.

Scapular Dyskinesis: A Commonly Seen Mysterious Condition in Asymptomatic Adults – A Narrative Review

“…3 The scapular position in relation to the thorax is important because its abnormal position disrupts the normal bio-mechanics of the shoulder joint, leading to injury or abnormal posture. 4 Optimal shoulder function requires proper positioning and movement of the scapula on the thorax. 5 Altered scapular motion and position have been termed scapular dyskinesis.…”

The effect of dynamic neuromuscular stabilization on trapezius muscle activation during shoulder exercises in individuals with rounded shoulder posture: a pilot study

“…Its occurrence is reported to be 73% on the right side and 66% on the left side. 1 Considering the contemporary sedentary work conditions and prolonged use of technological devices such as smartphones and tablets, this condition appears to be commonplace. Individuals who sit for extended periods may experience fatigue in the lumbar extensors, adopting a comfortable and slouched sitting position.…”

“…Therefore, alterations in scapular position can disrupt the normal biomechanics of the shoulder joint, leading to injuries. 1 Changes in the position and kinematics of the scapula affect the activation of muscles in the scapulothoracic region. 5 Therefore, exercises targeting the muscles around the scapula play a crucial role in rehabilitation for rounded shoulder posture.…”

The Effect of Shoulder Stabilization Exercise and Core Stabilization Exercise on the Shoulder Height and Respiratory Function in Young Adults with Round Shoulder Posture

“…A round shoulder posture (RSP) or forward shoulder posture (FSP) is defined as an increase in the distance between the inferior angle of the scapula and the spinous process of the vertebra. It is one of the common postural abnormalities in which the acromion moves anteriorly relative to the spinous process of the seventh cervical vertebra [1]. The RSP is a postural condition described as downward rotation, depression, anterior tilt, and medial rotation of the scapula [2] and is associated with poor postural habits, backpack carrying, repetitive overhead activities, computer use, mouth breathing, and long-term study time [1,3].…”