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The rotator cuff is a group of muscles and tendons that surrounds your shoulder. It holds your humerus (upper arm bone) in place in its socket in your scapula (shoulder blade). Rotator cuff injuries are common, especially among athletes who play contact sports.
Your shoulder muscles surround the top of your arm where it connects to your body’s trunk. Tendons connect your shoulder muscles to bones. These bones include your scapula (shoulder blade), humerus (bone between your shoulder and elbow) and clavicle (collarbone) .
The shoulder has about eight muscles that attach to the scapula, humerus, and clavicle. These muscles form the outer shape of the shoulder and underarm.
The shoulder muscles are skeletal muscles attached to the skeleton by individual tendons. Since these are voluntary muscles, you can control their movement, so you can raise your arm or cross them in front of your chest when you want.
Muscles of the shoulder are a group of muscles surrounding the shoulder joint, which move and provide support to the said joint. Anterior shoulder muscles, also called the pectoral muscles, attach the upper extremity to the clavicle and the thoracic cage.
Muscles, tendons, and ligaments combine to keep your arm bone in your shoulder socket. They also protect the main shoulder joint, the glenohumeral. About eight shoulder muscles attach to the...
Although three ligaments protect and surround the shoulder joint, most of its stability comes from the powerful muscles and tendons of the rotator cuff. The rotator cuff consists of four muscles: supraspinatus, infraspinatus, subscapularis, and teres minor.
There are 17 muscles that cross the shoulder joint. The periscapular muscles help to control the movements of the shoulder blade. This movement is critical to normal shoulder function. The rotator cuff is a group of four muscles and their tendons surrounding the glenohumeral joint controlling movements and providing stability.
The shoulder joint, also known as the glenohumeral joint, is a ball and socket joint with the most extensive range of motion in the human body. The shoulder muscles have a wide range of functions, including abduction, adduction, flexion, extension, internal and external rotation. [1] .
Three bones, nearly a dozen different muscles and many ligaments and tendons meet in the shoulder. The way that they are connected allows us to move our arms in just about any direction we want. But this flexibility comes at a price: The shoulder is prone to injury. And it’s not always easy to find the cause of shoulder pain.