The acromion process of the scapula is attached to the lateral clavicle (collarbone) with the help of the acromioclavicular joint. The humerus forms the ball joint, and the socket joint is formed by the front of the scapula (acromion).Ī diverse range of muscles and ligament attachments connect the arm and scapula to your body. The humerus (upper arm) and the scapula form a “ball and socket joint” in your shoulders. But in some cases, pain in any of the shoulder blades is a sign of a more severe condition. Injury-related scapular pain involving soft tissues usually resolves within a few days. The shoulders become vulnerable to injury if the normal ball-and-socket alignment of the shoulder joint is not sustained. If an injury, trauma, or underlying health disorder weakens or disrupts the cohesion between these muscles, the result can be scapular pain both at rest or during motion.Īny abnormal change in motion or position can make shoulder and arm movement difficult, especially during overhead activities.

These muscles work in synergy to move and rotate the shoulder joint. Your scapula is a large, flat triangular bone present on the back of the shoulders (upper back), and it’s supported by a complex system of muscles.

Is the scapula a flat bone