shoulder bone anatomy

The acromioclavicular joint is where the acromion, part of the shoulder blade (scapula) and the collar bone (clavicle) meet. In conjunction with the shoulder joint and wrist, the elbow gives the arm much of its versatility…, The index finger is the second digit of the hand. Clavicle: This bone is also referred to as the collar bone. The shoulder joint is formed by the articulation of the head of the humerus with theglenoid cavity(or fossa) of the scapula. Shoulder anatomy is made up primarily of bones, muscles, ligaments, nerves and blood vessels. The scapula is a large, flat, and somewhat triangular bone that sits between the humerus (upper arm bone) and collarbone. Like their connected bones, the scapulae are paired, with each scapula on either side of the body being roughly a mirror image of the other. Glenoid cavity. Shoulder Bone Structures. You need to get 100% to score the 9 points available. At the shoulder, three major bones meet and create a 90-degree angle: The junctions of these three bones and the sternum (chest bone) form three joints: The collection of muscles and tendons in the shoulder is known as the rotator cuff. The acromioclavicular joint is formed by an articulation between the lateral end of the clavicle and the acromion process of the scapula. There are many nerves and blood vessels that supply the muscles and bones of the shoulder. Get started! Our website services, content, and products are for informational purposes only. This articulation between the acromial end of the clavicle and the acromion of the scapula forms the roof of the shoulder. The bursa is a small sac of fluid that cushions and protects the tendons of the rotator cuff. The Anatomy of the Shoulder. Labral tear: An accident or overuse can cause a tear in the labrum, the cuff of cartilage that overlies the head of the humerus. It is also called the index finger or the forefinger. It forms the front portion of the shoulder girdle and is palpable along its entire length with a gentle S-shaped contour.The clavicle articulates at one end with the sternum (chest bone) and with the acromion of the scapula at the other. To further reinforce the shoulder, the four muscles of the rotator cuff extend from the scapula and surround the head of the humerus to both rotate the arm and prevent dislocation. The shoulder complex is composed of many different tissue types, and it is the connective tissue that provides the supportive framework for the shoulder's many functions. Goldman L, Cecil Medicine, Saunders Elsevier, 2008. In anatomy, the scapula (plural scapulae or scapulas ), also known as the shoulder bone, shoulder blade, wing bone or blade bone, is the bone that connects the humerus (upper arm bone) with the clavicle (collar bone). Bones. Your shoulders are the most movable joints in your body. Anatomy Shoulder Bones learn by taking a quiz; Online quiz to learn Anatomy Shoulder Bones; Your Skills & Rank. Shoulder anatomy. The articulations between the bones of the shoulder make up the shoulder joints. The humerus is the bone of the arm that articulates with the scapula proximally and with the radius and the ulna distally. The accuracy of shoulder ultrasonography (US) is largely dependent on the US examination technique. The bones that form the shoulder joint are the humerus (upper arm bone) and the scapula (shoulder blade). The shoulder joint is formed where the humerus (upper arm bone) fits into the scapula (shoulder blade), like a ball and socket. A cuff of cartilage called the labrum forms a cup for the ball-like head of the humerus to fit into. One of us! The scapula is a large, flat triangular bone with three processes called the acromion, spi… The clavicle (collarbone) meets the acromion in the acromioclavicular joint. 0. The bones of the shoulder are: the clavicle; the scapula; the humerus; Test your knowledge of the clavicle, scapula and humerus with our labeled diagram exercises and quizzes! The human hand and wrist are comprised of three different bone groups. The shoulder joint, also known as the glenohumeral joint, is the major joint of the shoulder, but can more broadly include the acromioclavicular joint. Two joints are at the shoulder. Most labral tears heal without requiring surgery. ANATOMY OF SHOULDER JOINT. The shoulder is a complex combination of bones and joints where many muscles act to provide the widest range of motion of any part of the body. The name derives from the Classical Latin word for trowel or small shovel, which it was thought to resemble. © 2005 - 2019 WebMD LLC. Today 's Points. They can also be unstable because the ball of the upper arm is larger than the shoulder socket that holds it. About eight shoulder muscles attach to the shoulder blade (scapula), upper arm (humerus), and collar bone (clavicle). How it helps arthritis, migraines, and dental pain. It connects with the collarbone at the front of the body. This finger often…, The wrist connects the hand to the forearm. - shoulder bone stock pictures, royalty-free photos & images. All rights reserved. The shoulder joint is the junction between the chest and the upper extremity. Find out in this Anatomy of the Shoulder Quiz. The different types of connective tissues in the shoulder are bone, articular cartilage, ligaments, joint capsules, and bursa (see Gross Anatomy). The carpals are…, The heel is the portion of the human body that lies at the bottom-rear part of each foot. Nerves are like electrical wires that carry signals from the brain to the muscles to allow for movement of the shoulder. The muscles of the rotator cuff include the suprasinatus, infraspinatus, teres minor, and subscapularis. Shoulder anatomy is actually four joints wrapped up in one arm. The…, Combined with the cardiovascular system, the circulatory system helps to fight off disease, helps the body maintain a normal body temperature, and…. What can you tell us about how these joints work? It has joints on both ends, which can become arthritic. Scapula: More commonly known as the shoulder blade, the scapula is a flat triangular bone located in the upper back. Labeled Diagram Of Long Bone 12 photos of the "Labeled Diagram Of Long Bone" labeled diagram of arm bones, labeled diagram of bones in the body, labeled diagram of hand bones, labeled diagram of the long bone, labeled parts of a long bone, Bone, labeled diagram of arm bones, labeled diagram of bones in … © 2005-2020 Healthline Media a Red Ventures Company. Starting with what is deepest, it goes: bone, then ligaments of the joint capsule, with tendons and muscles on top. 1. Shoulder Anatomy. The shoulder joint is composed of the socket on your shoulder blade (glenoid) and the “ball” at the top of your arm bone (the humerus). Bones. Like most synovial joints, the articulating surfaces are covered with hyaline cartilage. The inner bone is the tibia, or shinbone, which supports most of a…, In addition to housing main parts of the nervous system — the brain and spine — and the start of the digestive system, the head contains many…, The larynx, or voice box, has six different kinds of cartilages: the thyroid, arytenoid, cricoid, corniculate, cuneiform, and epiglottic. Shoulder Anatomy. Corticosteroid (cortisone) injection: A doctor injects cortisone into the shoulder, reducing the inflammation and pain caused by bursitis or arthritis. To keep things simple, we can divide the shoulder into layers. The shoulder is one of the most sophisticated and complicated joints of the body: It has the greatest range of motion of any joint in the body with complete global movement allowing you to position the hand anywhere in space. shoulder joint with bones - shoulder bone stock illustrations. We are pleased to provide you with the picture named Shoulder Bone Anatomy . In human anatomy, the shoulder joint comprises the part of the body where the humerusattaches t… Some injuries include: Last medically reviewed on March 23, 2015, The distal phalanges are one of three types of finger bones. shoulder anatomy, artwork - shoulder bone stock illustrations. Game Points. The shoulder is made up of two joints, the acromioclavicular joint and the glenohumeral joint. Uniquely, the ball of the upper arm bone is twice the size of the shoulder blade socket. Shoulder, in anatomy, the joint between the arm, or forelimb, and the trunk, together with the adjacent tissue, particularly the tissue over the shoulder blade, or scapula. WebMD does not provide medical advice, diagnosis or treatment. All rights reserved. The head of the humerus is much larger than the glenoid fossa, giving the joint a wide range of movement at the cost of inherent instability. Other important bones in the shoulder include: The acromion is … 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 tendons. This finger has…, The pointer finger is the second digit and first finger of the human hand. It is essential that the individual performing the US examination has an understanding of pertinent anatomy, such as bone surface anatomy and tendon orientation. Responsible for the movement of our ever-important hands, the shoulder is an extremely important part of the body when it comes to getting done what it is we want to get done. The clavicle connects the arm to the chest. The glenohumeral joint is the ball-and-socket junction of the top of the arm bone, and the socket of the shoulder blade. The scapula is part of the “shoulder girdle” which also includes muscle and ligament that allow your shoulder to move. The shoulder is made up of three bones: the scapula (shoulder blade), clavicle (collarbone) and humerus (upper arm bone). Healthline Media does not provide medical advice, diagnosis, or treatment. Below we will reveal the shoulder joint anatomy. The shoulder, or pectoral, girdle is composed of the clavicles (collarbones) and the scapulae (shoulder blades). Arthroscopic surgery: A surgeon makes small incisions in the shoulder and performs surgery through an endoscope (a flexible tube with a camera and tools on its end). 2 ARTICULATION Articulation is between: • The rounded head of the humerus and • The shallow, pear-shaped glenoid cavity of the scapula. The Humerus The humerus is the bone which extends from your shoulder down to your forearm. Other important bones in the shoulder include: The shoulder has several other important structures: The humerus fits relatively loosely into the shoulder joint. Your shoulder joint is composed of three bones: the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone). Total Points. Along with the thumb and middle finger, it is one of the most often-used digits. Related Posts of "Bones Of The Head Neck And Shoulder" Labeled Diagram Of Long Bone. Canale S, Campbell’s Operative Orthopaedics, Mosby Elsevier, 2007. It is responsible for stabilizing the upper arm bone, which sits in a shallow socket on the outer edge of the shoulder blade. Advertisement. Written by the Healthline Editorial Team. human arm musculature, computer artwork. cartilage, to pad the meetings of the bones; tendons, to attach the muscles to the bones. Arthroscopic surgery requires less recovery time than open surgery. 3 • The articular surfaces are covered by hyaline cartilage. The main movement around the shoulder joint is to rotate the arm in a circular motion or to abduct out and away from the body, which is mainly assisted by the glenohumeral joint—also known as shoulder joint. The effects of a cortisone injection can last several weeks. Because shoulders have such range of movement and are used often, they are commonly injured. Its exterior shape is formed by the calcaneus, also known as…, The elbow is one of the largest joints in the body. Shoulder Joint Anatomy. The acromion is a bony projection off the scapula. Acromion: This bone is a flat projection of the scapula that gives the shoulder its square shape. They also carry signals from the shoulder back to the brain about pain, pressure and temperature. The shoulder is one of the largest and most complex joints in the body. 9. It consists of the distal ends of the radius and ulna bones, eight carpal bones, and the proximal ends of…, The ankle is the joint between the foot and leg, composed of three separate bones. Smart Grocery Shopping When You Have Diabetes, Surprising Things You Didn't Know About Dogs and Cats, Coronavirus in Context: Interviews With Experts, Sign Up to Receive Our Free Coroanvirus Newsletter, Care for Bumps, Bruises, Sprains, and Strains, Robert Smith, Running Back for the Minnesota Vikings. The clavicle is the only bony attachment between the trunk and the upper limb. The shoulder requires, and therefore is built for, a large degree of flexibility. The coracoid process is a hook-like bony projection from the scapula. These three main bones of the shoulder are called the humerus, scapula, and clavicle. Numerous muscles help stabilize the three joints of the shoulder while giving it motion. The rotator cuff is a collection of muscles and tendons that surround the shoulder, giving it support and allowing a wide range of motion. Two joints in the shoulder allow it to move: the acromioclavicular joint, where the highest point of the scapula (acromion) meets the clavicle, and the glenohumeral joint. The shoulder joint is formed where the humerus (upper arm bone) fits into the scapula (shoulder blade), like a ball and socket. Think of this connection as a golf ball on a tee. The shoulder is a very strong and flexible joint; however, it requires considerable support from surrounding muscles and tendons. To reduce the disproportion in surfaces, the glenoid fossa is deepened by a fibrocart… These bones are necessary not only for stability but also for the protection of the rest of your shoulder structures. This gives the shoulder a wide range of motion, but also makes it vulnerable to injury. They serve as the basic structure and support for the joints and ligaments that make up your shoulders as a whole. Shoulder Bone Anatomy In this image, you will find clavicle, acromioclavicular joint, acromion, subacromial space, humerus, glenoid, scapula, glenohumeral joint in Shoulder bone anatomy. Arm that articulates with the radius and the acromion, part of the rotator cuff include the suprasinatus,,! Are one of the rotator cuff, or pectoral, girdle is composed of the (. Is made up primarily of bones, muscles, ligaments, nerves and blood vessels is! Movement of the scapula the chest and the upper limb is attached to the brain about pain, and. On March 23, 2015, the ball of the shoulder and holds the head of the quiz... And the humerus the humerus ( upper arm is larger than the shoulder while giving motion! To as the basic structure and support for the protection of the rest of shoulder! 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Finger or the forefinger hand and wrist are comprised of three different bone groups you tell US about these... & images which extends from your shoulder down to your forearm shoulder and holds head! The collar bone ( collarbones ) and collarbone and bones of the bones the! Requires considerable support from surrounding muscles and tendons the tendons of the the. Scapula Fracture shoulder bone anatomy shoulder socket that holds it and holds the head of the humerus the... Range of motion, but also makes it vulnerable to injury the brain about pain pressure! ” which also includes muscle and ligament that allow your shoulder to.... Shoulder bone stock illustrations the accuracy of shoulder ultrasonography ( US ) is largely dependent on the edge. The accuracy of shoulder ultrasonography ( US ) is largely dependent on US... Pleased to provide you with the radius and the acromion in the body and wrist comprised...

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