Mar 18, 20 anatomy of shoulder joint vamshi kiran 1. Patel, what else can you tell us about the anatomy of the shoulder. 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. Anatomy and injuries of the shoulder illustrates the following normal anatomy. The glenohumeral joint is where the ball humeral head and the socket the glenoid meet. Functional anatomy of the shoulder article pdf available in journal of athletic training 353. The muscles at the anterior aspect of the shoulder girdle are. The shoulder is one of the largest and most complex joints in the body. Basic information regarding structural components of the shoulder complex is presented in table form for easy accessibility. The straight arm is raised at the side, with the palm. The clavicle is the only bony attachment between the trunk and the upper limb.
The upper extremity ue is comprised of its associated muscles, nerves, and vessels, organized into anatomical compartments. 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. Biomechanics of the shoulder girdle audio and pdf yoga. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 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. T he joints of the shoulder com plex have to rely on adjacent ligam ents and m uscles to provide stability. 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. When they dont rest squarely on each other, their weight tends to make the whole body fold at the joints. Wikipedia introduction this section will cover the anatomy of the shoulders and touch on the anatomy of the arms which we will cover more. Each illustration is clealy labeled and injuries are textually described. 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 shoulder comprises of bones, ligaments, tendons and muscles that connect the arm to the torso. The acromioclavicular joint is where the acromion, a part of the shoulder blade scapula and the collar bone clavicle meet. The anatomy of the shoulder also enables rotation around the central axis of the arm bone. Anatomy of the shoulder southern california orthopedic. 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.
The acromioclavicular ac joint is a gliding joint formed between the clavicle and. 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. The acromioclavicular joint is where the acromion, part of the shoulder blade scapula and the collar bone clavicle meet. Nov 23, 2015 the shoulder comprises bones, ligaments, tendons, and muscles that connect the arm to the torso. 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.
Primary care sports medicine fellow steadman hawkins clinic of the carolinas. The shoulder is made up of two joints, the acromioclavicular joint and the glenohumeral joint. Further elevation of the arm above the head accomplished by. Affordable and search from millions of royalty free images, photos and vectors. The function of the shoulder is influenced by man joints. Orthopedic injury and prevention anatomy of the shoulder. The shoulder glenohumeral joint is a very unique joint in the sense that it permits significant mobility and range of motion. Front view of normal shoulder anatomy with side view of joint opened. Pdf anatomy, shoulder and upper limb, hand compartments. The roof or highest point of the shoulder that is formed by a part of the scapula. 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.
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. This leaflet provides general information about shoulder pain and simple exercises that may help. It maintains the shoulder in a functional position with the axial skeleton and allows varied arm positions in shoulder anatomy. The shoulder comprises bones, ligaments, tendons, and muscles that connect the arm to the torso. At about 120 of abduction of the arm, the greater tuberosity of the humerus comes into contact with the acromion. Apr 14, 2020 while any shoulder pain can eventually progress to a frozen shoulder, the most common cause is a rotator cuff tendonitis. The shoulder has two joints that work together to allow arm movement.
Quizlet flashcards, activities and games help you improve your grades. Because of the multiple joints involved during shoulder movement, it is prudent to. Bobby masocol md primary care sports medicine fellow. Commonly thought of as a single joint, the shoulder is actually made up of two separate joints the glenohumeral and acromioclavicular joints. 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. Drawer test the patient is seated with the forearm resting on the lap and the shoulder relaxed. Help support and rotate the shoulder in many directions. 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. Shoulder disorders are can be broadly classified into the following types. In a poorly aligned pose, the shoulder blades, spine, pelvis, and legs dont line up vertically.
Introduction shoulder girdle is formed by scapula and clavicle and humerus upper end. Shoulder european society of musculoskeletal radiology. Rotator cuff and shoulder conditioning program orthoinfo aaos. In this chapter only those muscles that are not discussed elsewhere are described.
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. Shoulder anatomy jacksonville orthopaedic institute. The dominant shoulder was involved in 27 patients in group a and 22 patients in group b p 0. Apr 12, 2017 in a poorly aligned pose, the shoulder blades, spine, pelvis, and legs dont line up vertically. We examine human shoulder movement by breaking it down into its structural static and dynamic components. The shoulder is the most mobile joint in the body with the least stability. Then, keeping the elbows in contact with the body, the hands are spread outward as far as possible. O n one hand, this m obility is because of little bony congruity of its artic ulating surfaces. It has the greatest range of motion of any joint in the body. However, in casual usage, the terms are often used interchangeably. 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. Dysfunction manual techniques for the shoulder manual techniques for the. 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. The three bones that make up the shoulder joint include the clavicle collarbone, scapula shoulder blade, and humerus long bone of the arm.
The acromioclavicular ac joint is a gliding joint formed between the clavicle. Find shoulder anatomy stock images in hd and millions of other royaltyfree stock photos, illustrations and vectors in the shutterstock collection. 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. The coordinated movement of the three bones of the. T he shoulder com plex has the greatest m o bility of all joints. The two main bones of the shoulder are the humerus and the scapula shoulder blade. Due to this joint freedom, we are able to pitch a fastball as well as swim rapidly through the water. Webmds shoulder anatomy page provides an image of the parts of the shoulder and describes its function, shoulder problems, and more. Anterior view showing muscles, bones, liagments, nerves, veins and arterires anterior view deep layer of the bones, ligaments and mucsle posterior view. Door press a stand in a doorway with your elbow bent at a right. Keeping these muscles strong can relieve shoulder pain and prevent further injury.
Anatomy of the shoulder see online here the shoulder is the region of the body that connects the upper limb with the trunk. 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. Introduction shoulder joint is formed by scapula and clavicle which is also called as shoulder girdleand proximal humerus. Most characteristic, accounting most for the shoulder joints versatility, is circumduction, defined by the free range of movement within a conical space. Anatomy of the shoulder everything you need to know dr. 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. 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. Edward seade explains basic shoulder anatomy 101 including the ligaments and three main bones in the shoulder the clavicle collar bone, the. We use our shoulder muscles for stabilization and arm movement. The shoulder joint is formed where the humerus upper arm bone fits into the scapula shoulder blade, like a ball and.
The rotator cuff tendons are a group of tendons that connect the deepest layer of muscles to the humerus. The scapulothoracic joint is the physiological, or func tional, joint between the underside of the scapula and the dorsal thoracic wall. This mobility allows you to move through a tremendous range of motion in a variety of planes. 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. It links the trunk to the upper limb and plays an important biomechanical role in daily activities. The tough cords of tissue that connect muscles to bones. Hart, mpa, ptt the shoulder complex consists of several ana tomical joints and one physiological joint. The bones of the shoulder consist of the humerus the upper arm bone, the scapula the shoulder blade, and the clavicle the collar bone. Nov 28, 2011 anatomy of the shoulder animation video. The human shoulder is a ballinsocket joint and in turn is the most mobile joint in the body.
Following a wellstructured conditioning program will also help you return to sports and other. Study 58 terms shoulder anatomy flashcards quizlet. A detailed chart showing normal anatomy of the shoulder as well as common injuries. The joint cavity is cushioned by articular cartilage covering the head of the humerus and face of the glenoid. In human anatomy, the upper limb also upper extremity refers to the region distal to the deltoid. Above and below the horizontal, the space is larger. 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. Stretching the muscles that you strengthen is important for restoring. However a series of complex ligaments and muscle keep it in joint.
The only skeletal connection of upper limb to trunk is claviclescapula is connected only through muscular attachments. 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. The shoulder joint is functionally and structurally complex and is composed of bone, hyaline cartilage, labrum, ligaments, capsule, tendons and muscles. This quiz will test your understanding of the muscles that make up the shoulder muscle group. The shoulder is one of the most sophisticated and complicated joints 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. Indications for imaging of the shoulder have considerably increased in the last few years. Numerous muscles help stabilize the three joints of. 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. Bobby masocol md primary care sports medicine fellow steadman. The elbows are held by the sides of the body, bent at 9 with palms facing each other. Due to wide range of movement it is also most unstable joint compared to other joints of the body. Anatomy and injuries of the shoulder anatomical chart. 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.
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