The hand is a very mobile part of the upper limb, and we perform very specialised tasks with it every day, key adaptations can be seen in the specialised structures of the hand. Laterally, deltoid and trapezius muscles impressions can be seen 12. See more ideas about shoulder anatomy, anatomy and shoulder. The three bones that make up the shoulder joint include the clavicle collarbone, scapula shoulder blade, and humerus long bone of the arm. 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. Injury to the shoulder joint is followed by pain, limitation of movement, and muscle atrophy owing to disuse. Muscles of anteriorflexor compartment of arm and their nerve supply muscles supplied by musculocutaneous nerve. The muscles of the shoulder bridge the transitions from the torso into the headneck area and into the upper extremities of the arms and hands. They are underneath the tendons of the following muscles. The joint is sensitive to pain, pressure, excessive traction, and distension. Posted in diagrams, muscles tagged human muscles, human muscles anatomy, muscle, muscle chart, muscle diagram, muscles. There are other minor bursae present between the tendons of the muscles. These muscles help initial abduction from 0 to 15 degrees, but also provide stabilization to the glenohumeral joint when the deltoid works to abduct past 15 degrees. Stretching the muscles that you strengthen is important for restoring range of motion and preventing injury.
How skeletal structure lends to shoulder instability. I hope you find it helpful as you study muscle identification and their actions in lab. These bursae may communicate with the cavity of the shoulder joint, but this communication usually occurs later in life or after trauma in the region. You will also find coracoid process of scapula, subscapularis, teres major, serratus anterior, teres minor, supraspinatus, spine of scapula, latissimus. The deltoid is the largest, stron gest muscle of the shoulder. These muscles form the outer shape of the shoulder and underarm. It has the greatest range of motion of any joint in the body allowing complete global movement allowing you to position the hand anywhere in space the coordinated activity of numerous muscles working together in set patterns is required to produce this motion. Superiorly shoulder joint protected by supraspinatus. Upper limb muscles, 293 muscles acting on the shoulder girdle, 293 muscles that move the upper arm, 294 muscles that move the forearm, 295 muscles that move the wrist, hand, and fingers, 295 lower limb muscles, 300 muscles that move the thigh and lower leg, 301 muscles that move the ankle and foot, 304 posture, 306 how posture is maintained, 307. Physical therapy is an effective, nonsurgical treatment for many shoulder conditions. Bobby masocol md primary care sports medicine fellow.
Pdf the shoulder joint glenohumeral joint is a ball and socket joint with the most extensive range of motion in the human body. Clinical anatomy of the upper limb welcome to khima. The shoulder has about eight muscles that attach to the scapula, humerus, and clavicle. Movements of the hand are made more effective through proper hand positioning by the elbow, shoulder joint, and shoulder girdle. Man y shoulder pr oblems ar e caused b y injuries to the rotat or cuff. Hollinsheads functional anatomy of the limbs and back, 6th ed. It is rimmed with soft tissue called the labrum that makes a deeper socket that molds to fit the humeral head. Basic shoulder anatomy the shoulder complex is made up of three bones, which are connected by muscles, ligaments, and tendons.
In this article, we shall look at the anatomy of the shoulder joint and its important. Muscles in turn move bones by pulling on the tendons. Muscles of the shoulder anatomy pictures and information. The shoulder muscles are a set of complex muscles that act as a link between the torso and the head or neck. Muscles ofthe human body 331 introduction muscles can be groupedinto anatomical regions such as muscles ofthe head, arm or torso. Pdf anatomy, shoulder and upper limb, shoulder muscles. Anatomy muscles of the shoulder and arm flashcards quizlet. The deltoid muscle takes over lifting the arm once the arm is away from the side. Shoulder pain the synovial membrane, capsule, and ligaments of the shoulder joint are innervated by the axillary nerve and the suprascapular nerve. The shoulder comprises bones, ligaments, tendons, and muscles that connect the arm to the torso. The shoulder comprises of bones, ligaments, tendons and muscles that connect the arm to the torso. This lesson covers the following objectives, along with. The muscles shield a ball and socket joint which is the most freely moveable joint in the body.
The shoulder girdle is composed of the following osseous components. The large deltoid muscle is the outer layer of shoulder muscle. The shoulder has two joints that work together to allow arm movement. The acromioclavicular ac joint is a gliding joint formed between the clavicle. The muscles surrounding the joint undergo reflex spasm in response to pain. The upper extremity ue is comprised of its associated muscles, nerves, and vessels, organized into anatomical compartments. Four of them are found on the anterior side of the shoulder, whereas the rest are located on the shoulders posterior side and in the back taking all these facts into account, we group shoulder muscles into.
All muscle model photographs by rob swatski 20092010. Anatomy of the shoulder joint three bones, the collarbone clavicle, the shoulder blade scapula, and the upper arm bone. So now i have made the fourth video about the shoulder anatomy and i showed all the details of innervation of the shoulder muscles. Anatomy of the shoulder joint three bones, the collarbone clavicle, the. Also, forearm movements occur in concert with both hand and shoulder movements 47. Lets talk about some of the things that make this joint different both in skeletal structure and musculature from other joints less likely to be injured. The muscles of the shoulder support and provide the movements of the shoulder girdle. The upper limb teachmeanatomy making anatomy simple. This muscle chart ebook covers the following regions. This webpage presents the anatomical structures found on shoulder mri.
Anatomy and injuries of the shoulder illustrates the following normal anatomy. But as with all anatomy, an area of misalignment can affect multiple areas. The shoulder girdle and upper arm are made up of a number of muscles and tendons. Scapula and clavicle shoulder girdle musculoskeletal, shoulder, tutorials, upper limb by admin december 12, 2011 6 comments. Gently stretching after strengthening exercises can help reduce. Posteriorly shoulder joint protected by teres minor and infraspinatus. Anatomy and injuries of the shoulder anatomical chart. See more ideas about massage therapy, muscle anatomy and shoulder muscles. The muscles surrounding the joint undergo reflex spasm in response to pain originating in the joint, which in turn serves to immobilize the joint and thus reduce the pain. The shoulder is one of the most sophisticated and complicated joints of the body. All types of exam questions on anatomy of upper limb enumerate, short notes, long questions, draw labelled diagrams and applied anatomy questions. The large bone in the upper arm is called the humerus. This section will cover the anatomy of the shoulders and touch on the anatomy of the arms which we will cover more in depth in the anatomy of the arms and hands section as they are so dependently interconnected.
Muscles can also be functionally related, for example, muscles that act on the thigh or muscles thatflex the hand. They attach the appendicular skeleton of the upper limb to the axial skeleton of the trunk. It includes a range of muscles such as the finer stabilizer, prime mover and fixator muscles. Deep muscles of the left shoulder anterior lateral view and posterior view in this image, you will find supraspinatus, deep muscles of the left shoulder anatomy, pectoralis major, deltoid in it. The muscles must maintain the proper alignment of the head of the humerus to the glenoid fossa as the arm is moving. The muscles of the rotator cuff keep the humerus tightly in the socket. Visit my itunes u site for anatomy podcasts and pdf files of all of my anatomy photo visua. In addition, the arterties and veins provide nourishment and remove waste, and the nerves provide the motor and sensory innervations. Pdf anatomy, shoulder and upper limb, biceps muscle. Anteriorly shoulder joint protected by subscapularis. An exercise program can strengthen shoulder muscles and improve flexibility in the shoulder.
The shoulder blade is called the scapula and the collarbone is called the clavicle. Nerves the main nerves that travel into the arm run through the axilla under the shoulder. Anatomy, shoulder and upper limb, hand compartments. The joints of the shoulder complex have to rely on adjacent ligaments and muscles to provide stability. Muscles that work with the deltoid include the supraspinatus, infraspinatus, teres minor and the subscapularis. Its bones, muscles, nerves, joints, blood vessels and lymphatics, anatomical areas, and structures found in the hand. The shoulder joint structure movement teachmeanatomy. For that reason, and because of the dexterity of the shoulder joint itself, the musculature of the shoulder is complex, ranging from massive prime mover muscles to finer stabilizer and fixator muscles. A detailed chart showing normal anatomy of the shoulder as well as common injuries. Each illustration is clealy labeled and injuries are textually described. 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. Four of them are found on the anterior side of the shoulder, whereas the rest are located on the shoulder s posterior side and in the back taking all these facts into account, we group shoulder muscles into. The glenohumeral gh joint makes up the ball and socket of the shoulder. Muscles of the upper arm and shoulder blade human anatomy kenhub duration.
This flashcard set features the muscles of the shoulder and arm. Stability is provided mainly by ligaments, tendons and muscles. Your rotator cuff is made up of muscles and tendons that keep the ball head of your upperarm bone humerus in your shoulder socket. Anterior view showing muscles, bones, liagments, nerves, veins and arterires anterior view deep layer of the bones, ligaments and mucsle posterior view. Knowing the anatomy of the shoulder is essential for surgeons who want to evaluate the pathologies correctly and avoid the. Pdf anatomy, shoulder and upper limb, hand compartments. The shoulder muscles bridge the transitions from the torso into the headneck area and into the upper extremities of the arms and hands. Proximal humerus scapula anatomic components of the scapula. Origin, insertion, action the originofthe muscle is the stable part ofthe. Deep muscles of the left shoulder anterior lateral view. This ebook contains highquality illustrations and validated information about each muscle.
933 664 921 532 472 1436 1205 1626 1345 1597 944 425 1228 888 828 1341 195 1566 1012 336 79 749 741 240 413 752 1496 1267 1377 913 118