04/06/2026
The shoulder joint is a ball-and-socket joint formed by the head of the upper arm bone (humerus) fitting into a shallow socket in the shoulder blade (scapula) called the glenoid. This design allows a wide range of movements, including lifting, rotating, and reaching in different directions. Because the socket is shallow, the shoulder relies heavily on muscles, tendons, and ligaments for stability. The rotator cuff muscles help keep the humerus centered in the socket during movement and the shoulder blade connected to the rib cage. The coordinated action of the shoulder blade, collarbone, and surrounding muscles enables smooth, powerful, and flexible arm motion.
Forward head posture, often called “text neck,” occurs when the head protrudes in front of the shoulders due to prolonged use of phones, or computers, or over working chest muscles at the expenses of back. This posture brings the humerus and the shoulder blades out of their stable position and increases stress on the neck, shoulders, and upper back. Over time, it can lead to muscle tightness, joint strain, headaches, and shoulder pain. That feeling of tightness between your shoulder blades can be a sign that they are overly stretched apart and need to be pulled back together. The altered alignment may also reduce shoulder mobility and increase the risk of overuse injuries such as rotator cuff
Overstretching, especially in flexible practitioners, may also lead to instability and injury. To avoid shoulder injuries, proper alignment is essential. Shoulders should be engaged and stable rather than allowing them to collapse or hunch toward. Building strength in the rotator cuff muscles, upper back, and core helps support the shoulder joint during weight-bearing poses.
We’ve been working on this in classes this week. There’s still time to catch a class this week if this sounds interesting to you. I can’t wait to see you