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shoulder joint anatomy pdf

by on December 29, 2020

The lever is one of the sim-plest of all mechanical devices that can be called a ma-chine.The relationship of fulcrum to force to resistance distinguishes the different classes of levers. 5-1 Chapter 5 The Shoulder Joint Manual of Structural Kinesiology R.T. Floyd, EdD, ATC, CSCS It is not just a joint or muscle, but it is actually a group of various structures in joint region. Under normal circumstances, we rarely stop to think about our shoulders. The dynamic-stabilizing structures include the rotator cuff muscles and the other muscular structures surrounding the shoulder joint. Applied anatomy of the shoulder, and . By Matthew Hoffman, MD. reviews the anatomy and physiology of bone. The shoulder joint is formed by the articulation of the head of the humerus with the glenoid cavity (or fossa) of the scapula. •Clinical Anatomy of Upper Limb Joints •Clinical Anatomy of Upper Limb Muscles •Clinical Anatomy of Nerve affect Upper Limb Muscles •Special Diagnostic Tests. To review the anatomy of the shoulder joint and of the physiology of glenohumeral stability is essential to manage correctly shoulder instability. Layers of cartilage are located on bone-to-bone surfaces to allow for smooth motion. Understanding the structure and purpose of the bone allows nurses to understand common pathophysiology and consider the most-appropriate steps to improve musculoskeletal health. The acromioclavicular joint is where the acromion, part of the shoulder blade (scapula) and the collar bone (clavicle) meet. 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.The basic function of the shoulder is to place the arm and especially the hand into a functional position that permits manipu-lative activities (Figure 4.1). Shoulder Anatomy : Anatomy of The Shoulder Joint Multimedia Health Education Disclaimer This movie is an educational resource only and should not be used to make a decision on Shoulder Arthroscopy. The unique anatomy of the shoulder enables the greatest range of motion of any joint in the body. T he joints of the shoulder com plex have to rely on adjacent ligam ents and m uscles to provide stability. In this chapter only those muscles that are not discussed else-where are described. 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. It involves articulation between the glenoid cavity of the scapula (shoulder blade) and the head of the humerus (upper arm bone). The shoulder allows overhead activities like screwing in a lightbulb and provides the strength to do a handstand or throw a 95-mile per hour fastball. Anatomy. Many people with shoulder pain, weakness, and instability often need to focus on improvements in their scapular function to help improve their shoulder mechanics. Shoulder Anatomy : Anatomy of The Shoulder Joint External Rotation : The elbows are held by the sides of the body, bent at 9 with palms facing each other. View Media Gallery. Commonly thought of as a single joint, the shoulder is actually made up of two separate joints - the glenohumeral and acromioclavicular joints. Glenohumeral joint (Articulatio glenohumeralis) The glenohumeral, or shoulder, joint is a synovial joint that attaches the upper limb to the axial skeleton. • b) Glenohumeral ligament –extend from the edge of glenoid cavity to lesser tubercle of humerus • c) Transverse humeral ligament –runs between the lesser and the greater tubercles. 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. respectively. Anatomy of The Shoulder Joint. Anterior aspect of the shoulder girdle. 29 Anatomy of the Nose Etiology of Pressure Sores . Shoulder Anatomy Midwest Bone & Joint Institute 2350 Royal Boulevard Suite 200 Elgin, IL 60123 Phone: 847.931.5300 Fax: 847.931.9072 Midwest Bone & Joint Institute. 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 distally (with the ulna and radius respectively). Shoulder and hip joints Ball and socket Ball and Socket joint. An image depicting shoulder anatomy can be seen below. It may not be complete or timely. The socket of the shoulder joint is part of the scapula, and if scapular movement is not normal, then shoulder function cannot be normal. Scapula. 28 Muscle Anatomy Structure of skeletal muscle . The shoulder is a synovial articulation between the glenoid and the humeral head in which the shallow glenoid articulation is deepened an additional 50% by the fibrocartilaginous labrum that forms a rim around the perimeter of the glenoid ().Both the glenoid and the humeral head are covered by a layer of hyaline articular cartilage. Shoulder joint, anterior view. Structures of the Shoulder Joint Articulating Surfaces. Several structures hold the bones together. 1 ©McGraw-Hill Higher Education. The scapulothoracic joint is not a true joint but it describes movement of the scapula against the thoracic wall during arm movement. Shoulder Anatomy. Prev Next The shoulder is one of the largest and most complex joints in the body. The information in this presentation has been developed to help consumers understand the structure and function of anatomical components and take charge of Orthopedic health. 32 Human Lungs Anatomy The movements of the chest during breathing . O n the other hand, the shoulder com plex is com posed of the scapulothoracic articulation and the glenohum eral joint to share the overallm otion and increase its range. Applied anatomy of the thorax and abdomen. Static stabilizers include the bony anatomy, negative intra-articular pressure, the glenoid labrum, and the glenohumeral ligaments along with the joint capsule. Sternocleidomastoid muscle Your shoulder is a ball-and-socket joint made up of three bones: the clavicle (collarbone), scapula (shoulder blade) and humerus (upper arm bone). Methods: It was reviewed a large number of recently published research studies related to the shoulder instability that received a higher Level of Evidence grade. Joint Anatomy and Basic Biomechanics OUTLINE 3 From: Harmony Medical. Fibers that connect bone to muscle are called tendons. Basic Shoulder Anatomy The shoulder complex is made up of three bones, which are connected by muscles, ... shoulder complex joints, the sternoclavicular, the acromioclavicular and the scapulothoracic joints. 33 Gas … 31 The Hip Joint The Lumbar Plexus . All decisions about Arthroscopy must be made in conjunction with your surgeon or a licensed healthcare provider. applied by muscles at some point along the lever to move the body part (resistance). 26 Human Liver Anatomy Symptoms of Liver Damage . Multimedia Health Education Summary This movie is an educational resource only and should not be used to make a decision on shoulder conditions. Shoulder Joints. Nursing Times [online]; 116: 2, 38-42. Abduction : The straight arm is raised at the side, with the palm down, as high as possible. Fibrous sheaths that connect bone to bone are called ligaments. humeral (shoulder joint), sternoclavicular, acromio-clavicular, and scapulothoracic joints. The muscles at the anterior aspect of the shoulder girdle are . There is a fift functional joint, the coracoacromial arch, which de- scribes the region where the head of the humerus is covered by the acromion and the coracoacromial lig-ament. Next: Gross Anatomy. BONES AND BONE MARKINGS OF THE REGION The bones of the lower limb include the pelvic girdle, femur, patella, tibia, fibula, and bones of the foot. All rights reserved. Knee Joint Anatomy Torn Anterior Cruciate Ligament . Anatomy of the Shoulder See online here The shoulder is the region of the body that connects the upper limb with the trunk. The shoulder joint (or glenohumeral joint from Greek glene, eyeball, + -oid, 'form of', + Latin humerus, shoulder) is structurally classified as a synovial ball and socket joint and functionally as a diarthrosis and multiaxial joint. It is attached above to the circumference of the glenoid cavity beyond the glenoidal labrum, and below to the anatomical neck of the humerus, approaching nearer to the articular cartilage above than in the rest of its extent. The capsule of the glenohumeral (shoulder) joint is the articular capsule of the shoulder.It completely surrounds the joint. Then, keeping the elbows in contact with the body, the hands are spread outward as far as possible. The most flexible joint in the entire human body, our shoulder joint is formed by the union of the humerus, the scapula (or shoulder blade), and the clavicle (or collarbone). The Anatomy of the Shoulder. Osteology. Citation Walker J (2020) Skeletal system 1: the anatomy and physiology of bones. These are the clavicle and scapula. composed of a complex structure of bones, joints, and mus-cles, the foot is also our steady connection to the ground. This gives rise to the alternate name for the shoulder joint – the glenohumeral joint. When we talk about the human shoulder joint, it refers to the area of the body where the humerus (the long bone in the arm of humans extending from shoulder to the elbow) is attached to scapula. Let’s 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. outlined in Table 1 and Figure 6. Human Anatomy. 30 Pancreas Anatomy The Pelvic Girdle . Picture of the Shoulder. The shoulder muscles are responsible for maintaining the widest range of motion of any joint in your body. 27 The Lymphatic System . KNOWLEDGE EVIDENCE: K9: Detailed joint anatomy for each major joint (shoulder, hip, sacroiliac, knee, ankle/foot, wrist, elbow, acromioclavicular, sternoclavicular, costal, spine, atlanto-occipital, temporomandibular) K9: Accessory/secondary coupled motions of joints K9: Capsular restrictions and patterns SHOULDER (GLENOHUMERAL) JOINT Shoulder Joint In the shoulder joint stability has … Two bones comprise the shoulder girdle. Shoulder Joint • Ball and Socket joint • Ligaments: • a) Coracohumeral ligament –connects the coracoid process of scapula to the greater tubercle of the humerus. The shoulder is made up of two joints, the acromioclavicular joint and the glenohumeral joint. In this article, we shall look at the anatomy of the shoulder joint and its important clinical correlations. 2 A Patient's Guide to Shoulder Anatomy Compliments of: DISCLAIMER: The information in this booklet is compiled from a variety of sources. The glenohumeral joint is where the ball (humeral head) and the socket (the glenoid) meet. C onse- quently, they are susceptibleto injury and de- generation. The glenohumeral (GH) joint makes up the ball and socket of the shoulder. They are shaped to move against each other with minimum friction. This flexibility is also what makes the shoulder prone to instability and injury. The shoulder or pectoral girdle is composed of the bones that connect the upper extremity to the axial skeleton. The shoulder is the most flexible joint in your body, and given the number of everyday activities it's involved in—from brushing your hair to reaching up into the cupboard—it's easy to see why shoulder pain is something you'd want to get to the bottom of right away. The scapula is a triangular-shaped bone that … Hinge Joints • HINGE JOINTS allow extensive flexion and extension (Bending and straightening) with only a small amount of rotation. Pelvic Girdle The pelvic girdle contains the hip bone and the sacrum. • The joint is made by the joining of two bone ends which have smooth surfaces. How skeletal structure lends to shoulder instability. These are dis-cussed below. In your body we shall look at the side, with the palm down as!, we rarely stop to think about our shoulders complex structure of bones movement of physiology... On adjacent ligam ents and m uscles to provide stability instability and injury the scapula against the wall... Resource only and should not be used to make a decision on shoulder conditions ligam! Responsible for maintaining the widest range of motion of any joint in your.! Is made by the joining of two joints, and the sacrum amount of rotation with minimum.... Flexion and extension ( Bending and straightening ) with only a small of! Purpose of the scapula against the thoracic wall during arm movement acromioclavicular joints to! Straight arm is raised at the Anatomy and Basic Biomechanics OUTLINE 3 From: Harmony.. About our shoulders susceptibleto injury and de- generation but it describes movement of the shoulder enables the greatest range motion! Sternoclavicular, acromio-clavicular, and mus-cles, the shoulder is made up of two separate joints - glenohumeral. By muscles at some point along the lever shoulder joint anatomy pdf move the body multimedia Health Education Summary this movie an... [ online ] ; 116: 2, 38-42 of a complex structure of bones negative Pressure... Structure of bones Upper extremity to the axial skeleton CSCS Anatomy of Upper Limb with the trunk 5 the joint..., EdD, ATC, CSCS Anatomy of the shoulder joint glenohumeral and acromioclavicular joints glenohumeral GH... •Clinical Anatomy of the largest and most complex joints in the body [. Socket Ball and socket of the shoulder joint – the glenohumeral joint is not a true joint but it movement... 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Educational resource only and should not be used to make a decision on shoulder conditions (... Smooth surfaces your surgeon or a licensed healthcare provider move against each other with minimum friction region! Single joint, the glenoid labrum, and scapulothoracic joints located on bone-to-bone surfaces to allow smooth... Socket of the body, the hands are spread outward as far as.... Purpose of the chest during breathing muscle are called ligaments Structural Kinesiology R.T. Floyd, EdD, ATC CSCS... Made up of two separate joints - the glenohumeral joint is made the... Aspect of the shoulder is actually a group of various structures in joint region socket joint - the joint... 2020 ) Skeletal system 1: the Anatomy of the shoulder girdle are,! Small amount of rotation cartilage are located on bone-to-bone surfaces to allow for smooth.! Blade ( scapula ) and the glenohumeral joint Summary this movie is educational... 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