Scapular dyskinesis and lateral scapular slide tests to assess scapular dyskinesis with chronic neck pain in office workers

Abstract Background Scapular dyskinesis is associated with shoulder dysfunction and chronic neck pain, particularly in computer-based office workers. Although scapular dyskinesis and lateral scapular slide tests are commonly used in clinical settings, each has limitations when used independently. In addition, only a few studies have examined the clinical relationship between these two testing methods, particularly in individuals with chronic neck pain in whom scapular dysfunction is highly prevalent. This study aimed to examine the relationship between the scapular dyskinesis and lateral scapular slide tests and explore their combined utility in assessing scapular dysfunction in individuals with chronic neck pain. Methods Eighty-three office workers (49 males and 34 females) with chronic neck pain were recruited from three information technology companies in Seoul, Korea. The severity of scapular dyskinesis was assessed using a three-grade scapular dyskinesis test (normal, subtle, and obvious), and the scapulothoracic distance was measured at three arm positions using the lateral scapular slide test. Neck disability index and visual analogue scale scores were also assessed. Results Significant differences were found in the lateral scapular slide test position 2 distance between the scapular dyskinesis test grades in both the dominant (p = 0.0021) and non-dominant arms (p = 0.0195). Individuals with subtle or obvious scapular dyskinesis exhibited significantly greater scapulothoracic distances than those with normal scapular motion. A positive correlation was observed between scapular dyskinesis test severity and lateral scapular slide test position 2 in both arms (dominant, p = 0.040; non-dominant, p = 0.0492). Participants with scapular dyskinesis also had higher neck disability index scores on the dominant side (p = 0.0214), but no significant associations were found with visual analogue scale. Conclusions Combining dynamic scapular dyskinesis and static lateral scapular slide tests provides a more comprehensive evaluation of scapular dysfunction in office workers with chronic neck pain. These findings underscore the need to assess postural alignment and dynamic scapular control in clinical settings. Further research is needed to validate these findings in diverse occupational populations.