The shoulder girdles mobility is a study in functional architecture. Looking to learn all the 206 bones in the human body. Pdf the humerus is the largest bone of the upper extremity and defines the human brachium arm. Shoulder girdle radiography radiology reference article. Scapula and clavicle shoulder girdle anatomy tutorial. The muscles of the shoulder girdle trapezius, rhomboideus, latissimus dorsi, serratus anterior and levator scapulae stabilize the scapula as a firm platform for movement of the humeral head. Pdf functional anatomy of the shoulder researchgate. The shoulder girdle or pectoral girdle is the set of bones in the appendicular skeleton which connects to the arm on each side. Aug 23, 2018 the shoulder girdle muscles move the clavicle collar bone and the scapula shoulder blade. The attachments of some shoulder girdle muscles in the pangolin have moved from the surrounding edges of the scapula to the spine, and they, therefore, fully cover the scapula.
We revisited the anatomy of the shoulder girdle muscles, including muscles unidentified by humphry, and examined the brachial plexus and its nerve supply to the shoulder girdle muscles for the first time as a control system adapted for these unique scaly, digging, and climbing mammals. Dec 17, 2018 pdf the humerus is the largest bone of the upper extremity and defines the human brachium arm. The clavicle or collarbone is an sshaped bone situated at the front of your body in a horizontal position. A functional understanding of the dynamic interplay of biomechanical forces around the shoulder girdle is necessary and allows for a. The shoulder girdle consists of three bones clavicle, scapula, and humerus and three joints sternoclavicular, acromioclavicular, and glenohumeral as shown in fig. See more ideas about shoulder anatomy, muscle anatomy and anatomy. Mar 24, 2019 the shoulder is not a single joint, but a complex arrangement of bones, ligaments, muscles, and tendons that is better called the shoulder girdle. A pectoral girdle, also called the shoulder girdle, connects your upper limbs to the bones along the axis of your body. You may think of the shoulder as one joint, but there are three in the pectoral girdle. The anatomy of the shoulder girdle consists of several joints, or articulations, which. Diagnosis and management of the shoulder and shoulder girdle. Learn shoulder girdle anatomy with free interactive flashcards. This consists of two bones, the scapula and clavicle figure.
Pdf movements of the human shoulder represent the result of a complex. 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. Scapula all descriptions are for a righthanded golfer. Bony anatomy, including the humerus, scapula, and clavicle, is described. Functional anatomy of the shoulder pubmed central pmc. This is an article about the anatomy and function of the shoulder girdle pectoral girdle including its muscles, bones and joints. These days, however, most of us tend to move the shoulder joint in one direction onlyout in front of us. The pectoral girdle is the set of bones which connect the upper limb to the axial skeleton on each side. Shoulder girdle protractors pectoralis muscles retractors rhomboids, middle trapezius elevators upper trapezius, levator scapulae depressors lower trapezius, pectoralis minor upward rotators downward rotators. As always you will get both the why and the what the theory and practice. Shoulder girdle shoulder girdle trauma to the shoulder girdle is common throughout life, but the site of injury varies with age.
Most shoulder girdle fractures occur following a lateral fall onto the shoulder or after an axial load to the humerus. Shoulder anatomy shoulder girdle and shoulder joint. Muscles of the shoulder girdle and arm musculoskeletal key. Function of pectoral girdle is to provide mobility on the thorax to enhance mobility of shoulder joint. Shoulder girdle muscles origins, insertions, action and. Apr 10, 2018 the pectoral girdle is made up of two major bones.
The shoulder is a complex joint with high mobility but a lack of stability. The bones that attach each upper limb to the axial skeleton form the pectoral girdle shoulder girdle. Both shoulder girdle and rotator cuff muscles contribute to dynamic glenohumeral stability. Muscles of the pectoral girdle and upper limbs anatomy. Figure 1 is the first of the series and orients the reader to the image positions. The radiography of the shoulder girdle is a commonly requested plain radiographic examination. Though the scapulothoracic joint where the scapula meets with the ribs at the back of the chest contains joint as part of the name, it does not fit the traditional definition of a joint, and therefore we exclude it. At about 120 of abduction of the arm, the greater tuberosity of the humerus comes into contact with the acromion. Shoulder anatomy shoulder girdle and shoulder joint explained. Pectoral girdle shoulder girdle anatomy and function. The shoulder girdle is also called the pectoral girdle, and it is a bone ring, incomplete posteriorly.
Sep 07, 2019 the anatomy of the shoulder consists of the shoulder joint and shoulder girdle. Shoulder anatomy the shoulder girdle is comprised of 4 joints more than 15 muscles work to stabilize and move the. Some fractures such as a clavicle or humeral shaft fracture can be palpated readily. Aug 24, 2017 kenhub learn human anatomy 496,745 views 23. An interactive quiz covering posterior markings of scapula bone through multiplechoice questions and featuring the iconic gbs illustrations. Anatomy, surgical considerations and classification martin malawer and james c. Stretching the muscles that you strengthen is important for restoring range of motion and preventing injury. Gently stretching after strengthening exercises can help reduce muscle soreness and keep your muscles long and flexible.
Dislocations of the shoulder and acromioclavicular separation are often seen. Clinical anatomy of the shoulder girdle part 2 youtube. They are uncommon in the athlete, but can occur secondary to highenergy trauma fig. Some mammalian species such as the dog and the horse have only. Except during slight movements of shoulder joints, all movements of shoulder joints are accompanied by movement of clavicle and scapula. The primary function of the shoulder girdle is to give strength and range of motion to the arm. The shoulder girdle is comprised of 4 joints more than 15 muscles work to stabilize and move the shoulder the shoulder joint has a very large range of motion which decreases its ability to stabilize. The pectoral girdle, or shoulder girdle, consists of the lateral ends of the clavicle and scapula, along with the proximal end of the humerus, and the muscles covering these three bones to stabilize the shoulder joint. In addition, some pangolin shoulder girdle muscles cross the shoulder joint to insert on the distal humerus, but this does not occur in armadillos. Apr 23, 2020 the shoulder girdle is also called the pectoral girdle, and it is a bone ring, incomplete posteriorly. Wittig overview the tikhofflinberg procedure and its modifications are limbsparing surgical options for selected patients with bone and softtissue tumors in and around the shoulder girdle. The shoulder and arm bone are joined together by ligaments. Some fractures such as a clavicle or humeral shaft. Anatomy of the golf swing the shoulder girdle minimalist.
It was designed to help us climb, hang from trees, and occasionally even crawl. The anatomy of the shoulder girdle ebook functional synergy. The muscles of the shoulder girdle are serratus anterior, pectoralis minor, levator scapulae, rhomboids, and trapezius. Describes the movement of relationship between the shoulder girdle and the shoulder joint the 1st 30 degrees of shoulder joint movement or motion is purely shoulder joint movement abduction flexion after that ever 2 degrees of shoulder flexion or abduction the scapula upwardly rotate one degree. What to know about the shoulder girdle yoga journal.
In it you will learn more about the shoulder girdle, the rotator cuff and winged scapulae. If a muscle attaches to the scapula and its other attachment is superior to the scapula, it can elevate the scapula at the scapulocostal joint. Anatomy and physiology anatomy is structure physiology is function. In children and adolescents, fracture of the clavicle sustained during play or athletic activities is a frequent type of skeletal injury. The proximal portion of the humerus is part of the upper limb and not the shoulder girdle proper. The shoulder girdle is formed by two sets of bones. You may also see this referred to as the pectoral girdle in some textbooks. If shoulder girdle retraction is the desired motion, which two muscles are agonists in the motion. Written and edited by expert surgeons in collaboration with a worldrenowned anatomist, this exquisitely illustrated reference consolidates surgical, anatomical and technical knowledge for the entire human body in a single volume. 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. 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. The anatomy of the shoulder girdle consists of several joints, or articulations, which connect the upper limb to the rest of the skeleton. Some mammalian species such as the dog and the horse have only the scapula. We examine human shoulder movement by breaking it down into its structural static and dynamic components.
Shoulder joint, acromioclavicular and sternoclavicular joint. 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. Biomechanics of the shoulder girdle audio and pdf yoga. The muscles at the anterior aspect of the shoulder girdle are.
A fractured clavicle is the most frequently broken bone in. The high signals white demonstrate deposited fat and nerve signals. In this chapter only those muscles that are not discussed elsewhere are described. Improving shoulder stability and strength darrell barnes, lat, atc, cscs. But as with all anatomy, an area of misalignment can affect multiple areas. The joints allow the shoulder to move your arm up and down, in circles, in front, and toward the back. Easily located on your upper back, the shoulder blades form the backside of the shoulder girdle attached to both the collarbones and heads of the upper arm bones.
This webpage presents the anatomical structures found on shoulder mri. The shoulder girdle includes three bonesthe scapula, clavicle and humerus. The extent of each series is determined by the radiography department protocols. Dec 12, 2011 this tutorial covers some of the main features that you should know about the scapula and clavicle. They are wide, flat triangleshaped bones broad at the top and narrowing into a tip at the bottom that run over back of your upper ribs and move up and down as well as on and off. It maintains the shoulder in a functional position with the axial skeleton and allows varied arm positions in shoulder anatomy. Anatomy and physiology for pilates purchase college ce class joseph e. The movements actions of the shoulder girdle consist of. Shoulder girdle definition of shoulder girdle by medical.
The shoulder girdle muscles move the clavicle collar bone and the scapula shoulder blade. Choose from 500 different sets of shoulder girdle anatomy flashcards on quizlet. Pectoral girdle shoulder girdle anatomy and function healthline. The shoulder girdle consists of the proximal humerus, the scapula and the clavicle. This tutorial covers some of the main features that you should know about the scapula and clavicle. 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 shoulder girdle, and, for that matter, all parts of the upper body, have one main function to present the arms and thus the golf club to the ball in such a manner that the ball can travel as far, straight and high as possible. Figures 1 through 8 demonstrate the surface anatomy ofthe chest wall and shoulder girdle. The clavicle connects to the sternum via the sternoclavicular joint and to the scapula by the acromioclavicular joint. In this video, i explained movement of scapula and muscles of shoulder girdle. Apr 05, 2017 the shoulder girdles mobility is a study in functional architecture. The shoulder girdle consists of three bones clavicle, scapula, and humerus and three joints sternoclavicular.