Objective: This study investigated the hypothesis that tennis players with scapular dyskinesia present a smaller subacromial space than non-athletes. Additionally, the correlation between the size of the subacromial space and abnormalities in scapular movement during arm abduction was investigated.
Design: Cross sectional study.
Participants: A total of 53 elite tennis players and 20 control subjects were enrolled in the study. Participation was restricted to elite-level, junior tennis players who had no current shoulder pain or history of shoulder injuries.
Intervention: Each individual was examined for scapular dyskinesia by a single physician and by ultrasound, with the results analyzed in a blind fashion by a single radiologist.
Results: 43.4% of the tennis players and 20% of control subjects presented scapular dyskinesia. Of the 106 shoulders evaluated, 39.6% of tennis players and 10% of control subjects presented scapular dyskinesia in the clinical examination (p=0.005). Ultrasonographic measurements demonstrated that tennis players presented statistically smaller subacromial spaces compared to control subjects (p<0.001). A decrease in the subacromial space was observed in tennis players when the shoulder was raised from zero to 60° of abduction. However, dyskinesia-afflicted athletes demonstrated a significantly greater decrease following this movement (19,3 mm versus 13.8mm, p=0.002).
Conclusion: This study demonstrated that tennis players with scapular dyskinesia present a smaller subacromial space than control subjects. Additionally, when the shoulder was analyzed dynamically, moving from neutral abduction to 60° of elevation, the tennis players with scapular dyskinesia presented a greater reduction in the subacromial space compared to unaffected athletes.
Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.