What is the action of the major and minor rhomboids on the scapula?

The major and minor rhomboids are key muscles in the upper back that play a crucial role in the movement and stabilization of the scapula. Their primary action is retraction, which means they pull the scapula towards the spine. This retraction is essential for maintaining proper shoulder alignment and function during various upper limb activities.

In addition to retraction, the rhomboids also contribute to downward rotation of the scapula. This action is important for movements where the arm is raised above shoulder level, as it helps to stabilize the shoulder girdle and maintain an optimal position for the glenohumeral joint.

The combination of retraction and downward rotation ensures that the scapula adheres appropriately to the thoracic wall and provides a stable base for movements of the arm. This stability is particularly beneficial during overhead or reaching motions. Therefore, recognizing the actions of the rhomboids is crucial in understanding scapular mechanics and their contribution to overall upper body function.