However a series of complex ligaments and muscle keep it in joint. In this chapter only those muscles that are not discussed elsewhere are described. Due to wide range of movement it is also most unstable joint compared to other joints of the body. Pdf anatomy, shoulder and upper limb, hand compartments. Front view of normal shoulder anatomy with side view of joint opened. The shoulder joint is formed where the humerus upper arm bone fits into the scapula shoulder blade, like a ball and. Most characteristic, accounting most for the shoulder joints versatility, is circumduction, defined by the free range of movement within a conical space. File under medical illustrations showing anatomy of the left shoulder, with emphasis on the terms related to anatomy shoulder joint left supraspinatus muscle subscapularis humerus deltoid biceps glenoid ac acromion clavicle labrum. Sep 11, 2018 responsible for the movement of our everimportant 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.
Mar 18, 20 anatomy of shoulder joint vamshi kiran 1. This quiz will test your understanding of the muscles that make up the shoulder muscle group. Bobby masocol md primary care sports medicine fellow steadman. The clavicle is the only bony attachment between the trunk and the upper limb. Shoulder anatomy jacksonville orthopaedic institute. Door press a stand in a doorway with your elbow bent at a right.
The acromioclavicular ac joint is a gliding joint formed between the clavicle and. Affordable and search from millions of royalty free images, photos and vectors. Dysfunction manual techniques for the shoulder manual techniques for the. 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. Find shoulder anatomy stock images in hd and millions of other royaltyfree stock photos, illustrations and vectors in the shutterstock collection.
Primary care sports medicine fellow steadman hawkins clinic of the carolinas. We use our shoulder muscles for stabilization and arm movement. The shoulder is one of the most sophisticated and complicated joints of the body. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Shoulder european society of musculoskeletal radiology. In a poorly aligned pose, the shoulder blades, spine, pelvis, and legs dont line up vertically. Responsible for the movement of our everimportant 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. Rotator cuff and shoulder conditioning program orthoinfo aaos. T he joints of the shoulder com plex have to rely on adjacent ligam ents and m uscles to provide stability. Unfortunately, that anatomy can also allow the shoulder to become unstable or vulnerable to injury because the ball of the upper arm is larger than the shoulder socket that holds it. Orthopedic injury and prevention anatomy of the shoulder.
This position allows the examiner to reach the anterior, lateral and posterior aspects of the shoulder with the probe by simply asking the patient to rotate on the. Wikipedia introduction this section will cover the anatomy of the shoulders and touch on the anatomy of the arms which we will cover more. The human shoulder is a ballinsocket joint and in turn is the most mobile joint in the body. Nov 28, 2011 anatomy of the shoulder animation video. This leaflet provides general information about shoulder pain and simple exercises that may help. It links the trunk to the upper limb and plays an important biomechanical role in daily activities. The coordinated movement of the three bones of the. Biomechanics of the shoulder girdle audio and pdf yoga. Apr 14, 2020 while any shoulder pain can eventually progress to a frozen shoulder, the most common cause is a rotator cuff tendonitis.
Functional anatomy of the shoulder acomprehensive knowledge of the functional anatomy of the shoulder girdle and all of its component parts is mandatory in understanding armshoulder function. Basic information regarding structural components of the shoulder complex is presented in table form for easy accessibility. Edward seade explains basic shoulder anatomy 101 including the ligaments and three main bones in the shoulder the clavicle collar bone, the scapula shoulder blade and humerus. The three bones that make up the shoulder joint include the clavicle collarbone, scapula shoulder blade, and humerus long bone of the arm. When they dont rest squarely on each other, their weight tends to make the whole body fold at the joints. Anatomy of the shoulder everything you need to know dr. Apr 12, 2017 in a poorly aligned pose, the shoulder blades, spine, pelvis, and legs dont line up vertically. The anatomy of the shoulder also enables rotation around the central axis of the arm bone. Thousands of new, highquality pictures added every day. The upper extremity ue is comprised of its associated muscles, nerves, and vessels, organized into anatomical compartments. The shoulder is the most mobile joint in the body with the least stability. Nov 23, 2015 the shoulder comprises bones, ligaments, tendons, and muscles that connect the arm to the torso. The hip joints tend to flex, so the legs fall forward and the pelvis hangs back, and the spine tends to round, making the chest cave in.
The acromioclavicular ac joint is a gliding joint formed between the clavicle. Anterior view showing muscles, bones, liagments, nerves, veins and arterires anterior view deep layer of the bones, ligaments and mucsle posterior view. However, in casual usage, the terms are often used interchangeably. The shoulder comprises of bones, ligaments, tendons and muscles that connect the arm to the torso. The shoulder is made up of two joints, the acromioclavicular joint and the glenohumeral joint. T he shoulder com plex has the greatest m o bility of all joints. The joint cavity is cushioned by articular cartilage covering the head of the humerus and face of the glenoid. The acromioclavicular joint is where the acromion, part of the shoulder blade scapula and the collar bone clavicle meet. The scapula extends up and around the shoulder joint at the rear to form a roof, called the acromion, and around the shoulder joint at the front to. Introduction shoulder girdle is formed by scapula and clavicle and humerus upper end. The tough cords of tissue that connect muscles to bones. Anatomy of the shoulder southern california orthopedic. The shoulder is one of the largest and most complex joints in the body.
The rotator cuff tendons are a group of tendons that connect the deepest layer of muscles to the humerus. It has the greatest range of motion of any joint in the body. The roof or highest point of the shoulder that is formed by a part of the scapula. The elbows are held by the sides of the body, bent at 9 with palms facing each other. Because of the multiple joints involved during shoulder movement, it is prudent to. We examine human shoulder movement by breaking it down into its structural static and dynamic components. Commonly thought of as a single joint, the shoulder is actually made up of two separate joints the glenohumeral and acromioclavicular joints. Further elevation of the arm above the head accomplished by. For every 3 of abduction of the arm, a 2 abduction occurs in the shoulder joint and a 1 abduction occurs by rotation of the scapula. Mar 23, 2015 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. Finally, with a frozen shoulder, there is a loss of passive range of motion what the doctor can do when manipulating the arm, as well as a loss of active range of motion what the patient can do alone. Anatomy and injuries of the shoulder illustrates the following normal anatomy.
Shoulder disorders are can be broadly classified into the following types. Shoulder complex anatomy osseous elements the shoulder complex includes the articulations of the humerus, the clavicle, the scapula, and the posterior surface of the ribs. Following a wellstructured conditioning program will also help you return to sports and other. Drawer test the patient is seated with the forearm resting on the lap and the shoulder relaxed. Anatomy of the shoulder health encyclopedia university of. Introduction shoulder joint is formed by scapula and clavicle which is also called as shoulder girdleand proximal humerus. The straight arm is raised at the side, with the palm. Webmds shoulder anatomy page provides an image of the parts of the shoulder and describes its function, shoulder problems, and more. Due to this joint freedom, we are able to pitch a fastball as well as swim rapidly through the water. In human anatomy, the upper limb also upper extremity refers to the region distal to the deltoid. Numerous muscles help stabilize the three joints of.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Study 58 terms shoulder anatomy flashcards quizlet. The shoulder has two joints that work together to allow arm movement. The two main bones of the shoulder are the humerus and the scapula shoulder blade. Anatomy and injuries of the shoulder anatomical chart. The shoulder girdle composed of the scapula and clavicle and pelvic girdle are the two points in the body where the axial and the appendicular skeletons meet. Lt col jerman the anatomy of the shoulder allows it to have the greatest flexibility and range of motion of any joint in the body. O n one hand, this m obility is because of little bony congruity of its artic ulating surfaces. The only skeletal connection of upper limb to trunk is claviclescapula is connected only through muscular attachments. Each illustration is clealy labeled and injuries are textually described. Stretching the muscles that you strengthen is important for restoring. The function of the shoulder is influenced by man joints. The dominant shoulder was involved in 27 patients in group a and 22 patients in group b p 0. Indications for imaging of the shoulder have considerably increased in the last few years.
The shoulder comprises bones, ligaments, tendons, and muscles that connect the arm to the torso. The basic function of the shoulder is to place the arm and especially the hand into a functional position that permits manipulative activities figure 4. The shoulder glenohumeral joint is a very unique joint in the sense that it permits significant mobility and range of motion. Functional anatomy of the shoulder article pdf available in journal of athletic training 353. One of the examiners hands stabilizes the shoulder girdle scapula and clavicle while the other grasps the proximal. Anatomy of the shoulder joint three bones, the collarbone clavicle, the shoulder blade scapula, and the upper arm bone humerus come together to form the shoulder. At about 120 of abduction of the arm, the greater tuberosity of the humerus comes into contact with the acromion. The humerus is a long bone that forms the articulations of the glenohumeral joint proximally with the scapula, and the humeral ulnar joint and humeral radial joint. Help support and rotate the shoulder in many directions.
Keeping these muscles strong can relieve shoulder pain and prevent further injury. The acromioclavicular joint is where the acromion, a part of the shoulder blade scapula and the collar bone clavicle meet. Anatomy of the shoulder see online here the shoulder is the region of the body that connects the upper limb with the trunk. Above and below the horizontal, the space is larger. The bones of the shoulder consist of the humerus the upper arm bone, the scapula the shoulder blade, and the clavicle the collar bone.
Shoulder girdle permits largest rom of any complex in the body shoulder girdle increases rom with less compromise of stability scapulohumeral rhythm 4 joints vs. The scapulothoracic joint is the physiological, or func tional, joint between the underside of the scapula and the dorsal thoracic wall. Then, keeping the elbows in contact with the body, the hands are spread outward as far as possible. Edward seade explains basic shoulder anatomy 101 including the ligaments and three main bones in the shoulder the clavicle collar bone, the.
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. A detailed chart showing normal anatomy of the shoulder as well as common injuries. Bony anatomy, including the humerus, scapula, and clavicle, is described, along with the associated articulations, providing the clinician with the structural foundation for understanding how the static ligamentous and dynamic muscle forces exert their effects. In formal usage, the term arm only refers to the structures from the shoulder to the elbow, explicitly excluding the forearm, and thus upper limb and arm are not synonymous. The shoulder joint is functionally and structurally complex and is composed of bone, hyaline cartilage, labrum, ligaments, capsule, tendons and muscles. Bobby masocol md primary care sports medicine fellow. The glenohumeral joint is where the ball humeral head and the socket the glenoid meet. This mobility allows you to move through a tremendous range of motion in a variety of planes. The muscles at the anterior aspect of the shoulder girdle are. The three bones that make up the shoulder joint include the clavicle collar bone, the scapula the shoulder blade and the humerus the long bone of the arm. Patel, what else can you tell us about the anatomy of the shoulder. It maintains the shoulder in a functional position with the axial skeleton and allows varied arm positions in shoulder anatomy. Functional anatomy of the shoulder acomprehensive knowledge of the functional anatomy of the shoulder girdle and all of its component parts is mandatory in understanding arm shoulder function. Quizlet flashcards, activities and games help you improve your grades.