Scapulohumeral rhythm is the coordinated movement that should occur between the shoulder and scapulocostal joints during all movements of the arm. We feel that there are a handful of verbal cues and hands-on assists out there in yoga world that go against this rhythm, which can lead to shoulder instability and/or impingement syndrome (e.g., "plug the arms into the sockets," "draw the shoulderblades down the back," "melt the heart" in plank, etc.). Learning more about scapulohumeral rhythm will better inform your own practice, refine the biomechanical accuracy of your verbal cues and hands-on assists, and help keep your shoulder joints happy and healthy.
In the first of video in this series we explored the anatomy and movements available at the shoulder and scapulocostal joints. In this video (the 2nd in the series), we explore how movements of the shoulder joint should be coupled with movements of the scapulocostal joint to ensure safe, efficient biomechanics at the shoulder joint complex that will help prevent injury.
In subsequent videos we'll explore: