The latissimus dorsi and teres major on the posterior side extend and adduct the arm towards the vertebrae of the back. The anatomy of the shoulder is complex but the shoulder joint allows a wide range of movement.
Shoulder Instability Pinnacle Orthopaedics
Shoulder anatomy back view the rotator cuff is an anatomical term given to the group of four muscles and their tendons that act to stabilize the shoulder.
Shoulder anatomy back. You may feel your shoulder is unstable and potentially wants to move out of place or relocate especially when your shoulder is in extreme external rotation. It is encased by 17 muscles which provide control and stabilisation against the thoracic wall the ribcage. Its main function is shoulder extension which is characterized by pulling your upper arms backward and bringing your shoulder blades together.
The scapula or shoulder blade this scapula is an attachment site for muscles which support movement and stabilisation of the shoulder. If this is the case have your partner gently press on the front of your shoulder to relocate the joint. It stabilizes the shoulder and holds the head of the humerus in the glenoid a shallow cavity in the scapula.
These muscles are the supraspinatus infraspinatus teres minor and subscapularis and that hold the head of the humerus in the glenoid cavity during movement. The anatomy of the shoulder the shoulder is made up of two joints the acromioclavicular joint and the glenohumeral joint. Webmds shoulder anatomy page provides an image of the parts of the shoulder and describes its function shoulder problems and more.
The posterior deltoid is located on the back of your shoulder. The collection of muscles and tendons in the shoulder is known as the rotator cuff. Labrum a cuff of cartilage that forms a cup like environment for the humerus.
The joint is used very often so shoulder injuries are common in patients. It sits at the back of the shoulder over the 2nd 7th ribs and is tilted forwards by an angle of 30. The acromioclavicular joint is where the acromion part of the shoulder blade scapula and the collar bone clavicle meet.
The labrum provides stability to the ball and socket joint preventing dislocation of the shoulder. This joint which allows the shoulder to move forward and backward and the arm to move in a circular motion is also called the shoulder joint. The glenohumeral joint is where the ball humeral head and the socket the glenoid meet.
The acromioclavicular joint is a gliding joint located on the top of the shoulder. On the anterior side of the shoulder the coracobrachialis serratus anterior pectoralis major and pectoralis minor muscles work as a group to flex and adduct the scapula and humerus anteriorly toward the sternum.
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