Literature Review:

Machado Sanchez et al. (2014) investigated the link between scapular dyskinesis and shoulder pain in sedentary young adults. They observed significant differences in scapular movements between individuals with and without shoulder pain, particularly at specific angles of shoulder abduction. This study highlights the importance of considering scapular positioning in understanding shoulder pathologies and underscores the need for targeted interventions to address scapular dyskinesis in pain management strategies.

Seitz's study (2012) delved into the effects of scapular dyskinesis and the scapular assistance test (SAT) on subacromial space during static arm elevation. Contrary to expectations, they found no differences in subacromial space or scapular kinematics between individuals with and without dyskinesis during active arm elevation. However, the SAT maneuver effectively increased scapular mobility and acromiohumeral distance in both groups, suggesting its potential utility in identifying and managing subacromial compression-related symptoms.

Nascimento et al. (2021) explored spine posture, mobility, and strength in healthy individuals with and without scapular dyskinesis. Surprisingly, they found no significant differences in these parameters between the two groups, challenging conventional assumptions about the relationship between scapular dyskinesis and spinal biomechanics. These findings underscore the complexity of musculoskeletal interactions and suggest that scapular dyskinesis may be influenced by individual variations rather than solely by spinal factors.

Collectively, these studies provide valuable insights into the association of scapular dyskinesis with thoracocolumbar range of motion and its implications for clinical practice. While scapular dyskinesis appears to play a role in shoulder pain, its relationship with spinal biomechanics remains elusive. Future research should adopt longitudinal designs to elucidate the dynamic interplay between these factors and develop tailored interventions to optimize musculoskeletal function and prevent shoulder disorders.