The human shoulder is made up of three bones: the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone) as well as associated muscles, ligaments and …

Jun 19, 2024 · Each shoulder is held in place by a group of four muscles and tendons, called a rotator cuff, which covers and protects the humerus and lets you raise and move your arm. …

Also called the glenohumeral joint, it is a ball-and-socket joint capable of the widest range of movements in the body, controlled by the six shoulder muscles. These muscles keep the …

Mar 4, 2022 · Don’t ignore obvious warning signs of more serious shoulder issues. Shoulder pain, stiffness or weakness can make it difficult to carry out everyday tasks, like reaching for …

Jun 26, 2025 · Possible reasons why your shoulder hurts vary, but where you feel pain can help narrow down the cause. Common causes include poor posture, bursitis, arthritis, muscle …

Jun 29, 2025 · Your shoulders can be affected by injuries such as sprains, strains and rotator cuff tear. Learn how to treat and prevent shoulder pain and injury.

Shoulder injuries are frequently caused by athletic activities that involve excessive, repetitive, overhead motion, such as swimming, tennis, pitching, and weightlifting. Injuries can also occur …

May 17, 2023 · Shoulder pain is a common condition. The shoulder's unique anatomy, along with its frequent everyday use, means simple tasks like turning or reaching, repetitive movements …

Although the shoulder is the most movable joint in the body, it is also an unstable joint because of its range-of-motion. Because the ball of the upper arm is larger than the socket of the …

Mar 18, 2024 · Stiff or tight shoulders can cause discomfort and limit a person’s range of motion. If the tightness goes unchecked, it can cause neck pain and tension headaches. This article …