attachments of scapula

Posted by in smash-blog | December 29, 2020

The glenoid labrum helps to deepen the “socket”. The muscles that originate from the vertebral column and are inserted into the scapula are the: Trapezius, Levator scapulae, Rhomboid major and Rhomboid minor. 1. The Deltoid originates from both the scapula and the clavicle, so just like the Trapezius, it’s attached to the spine of the scapula. A bony ridge, known as the spine of the scapula, rises from the posterior surface of the scapula along its medial side. The scapula is the large triangular bone connecting the humerus, or upper arm bone, to the clavicle, or collar bone. Scapula 3D models ready to view, buy, and download for free. Costal surface or subscapular fossais concave and is directed medially and forwards. This is because its point of origin is the anterior chest wall, so the muscle itself extends around the thoracic cage in order to reach its designated point of insertion. The Teres major, Teres minor and the long head of the Triceps brachii are attached to the lateral border of the scapula. The image of the upper back is assumed to be wing-like. Rhomboideus major is inserted into the medial border (dorsal aspect) between the root of the spine and inferior angle of the scapula. Movements of the scapula are carried by the scapular muscles. The scapula can do six moves: Costal Surface The shoulder joint is considered a ‘ball and socket’ joint. If the scapula defaults to properly elevate the acromion, shoulder impingement may develop. The scapula is a flat, triangular bone located posterior to the ribcage. Infraspinous fossa – The area below the spine of the scapula, it displays a convex shape. Muscles attached to the three borders of scapula Medial border – Costal surface (including that of inferior angle) provides attachment( insertion) to serratus anterior . The three borders are: Medial, Lateral and Superior borders. 3. The posterior Teres minor arises from upper 2/3rds of the rough strip on the dorsal surface along the lateral border. bodies of upper thoracic (T123) and lower cervical (C567) vertebrae, transverse processes mid-cervical (C345) vertebrae Deltoid tubercle of spine of the scapula . So, of all the 11 muscles originating from the scapula, only the Omohyoid is inserted into the hyoid bone (Notice how the prefix of the name of the muscle indicates its point of origin -omo means scapula in Latin- whereas its suffix indicates its point of insertion). The scapula is an important bone as each scapula provides a point of attachment for a number of muscles that make up the arm and shoulder. The scapula has three borders The spinoglenoid ligament links the spinoglenoid notch of the scapula. Insertion: (distal attachments) a. Medial border of the scapula between spine and superior angle. Deltoid arises from the lower border of the crest of the spine and from lateral border acromion. – Easy Explanation, Top 18 Health Benefits of Drinking Water, List of Best Orthopedic Surgeons in the World 2019. In this situation, the sides of the scapula nearest the spine are located outward and backward. Medial border – D orsal surface form above downwards provide attachment to three muscles i.e. Scapula: The scapula is also known as the shoulder blade. Start studying Neck Muscle attachments. The axial skeleton comprises a whole set of bones that form the longitudinal axis. There are two significant bursae within the scapula: Glenoid fossa –  A shallow cavity, which connects with the humerus to settle the glenohumeral joint. Inferior belly of omohyoid arises from the upper border near suprascapular notch of the scapula. 17 muscles attach to the scapula (in alphabetic order): 1. biceps brachii(both heads) 2. coracobrachialis 3. deltoid 4. infraspinatus 5. latissimus dorsi 6. levator scapulae 7. omohyoid inferior belly 8. pectoralis minor 9. rhomboid major 10. rhomboid minor 11. serratus anterior 12. subscapularis 13. supraspinatus 14. teres major 15. teres minor 16. trapezius 17. triceps brachii(long head) The levator scapulae, rhomboideus major and minor muscles comprise of double folds at the scapular end. SCAPULA Provide attachment for three different groups of muscles. The suprascapular vessels and nerve passageway to it. Posterior crest of spine of the scapula (shoulder blade). Key facts about the rhomboid muscles Origin Rhomboid minor: Nuchal ligament, Spinous processes of vertebrae C7-T1 Rhomboid major: Spinous process of vertebrae T2-T5 Insertion Rhomboid minor: Root (medial end) of spine of scapula Rhomboid major: Medial border of scapula (from inferior angle to root of spine of scapula) Attachments of Levator Scapulae: Origin & Insertion Origin: (proximal attachments) a. Transverse processes of the C1-C4. The coracohumeral ligament is connected to the root of the coracoids process of the scapula. The scapula also articulates with the humerus of the upper arm to form the shoulder joint, or glenohumeral joint, at the glenoid cavity. The coracoacromial ligament connects the coracoid process to the acromion of the scapula. Review the attachments, actions and innervation of the muscles attached onto the scapula. The levator scapulae, rhomboideus major and minor muscles comprise of double folds at the scapular end. The subscapularis muscle (a multipennate muscle) arises from the medial two-third of subscapular fossa/ costal surface with the exception of near the neck where a subscapular bursa intervenes in between the neck and the subscapular tendon. Learn vocabulary, terms, and more with flashcards, games, and other study tools. It is the position of the glenohumeral joint, and of numerous muscle attachments. levator scapulae, rhomboideus minor and romboideus major. Although sturdy in cartilagenous fish, both plates are generally small in most other fish, and may be partially cartilagenous, or consist of multiple bony elements. The suprascapular ligament links across the suprascapular notch and converts it into a foramen which transmits the suprascapular nerve. The other centers, including 2 for the acromion, one for the medial border, one for the lower 2/3rds of the margin of the glenoid cavity and one for the inferior angle of the scapula develop at puberty and fuse by the 25th year. The human skeleton, consisting of 206 bones, is organized into two parties, the first being the axial skeleton, to which the appendicular skeleton, the second group, is attached. 4. The subscapularis muscle originates from this side. The suprascapular nerve travels through the notch and provides motor supply to the supraspinatus muscle and infraspinatus muscle, as well as sensation to the acromioclavicular joint. The Trapezius is inserted into the spine of the scapula, wheras the other 3 are inserted into its medial border, which helps them achieve their function the best. The posterior surface of the scapula faces outwards. a. Superficial Back Muscles b. Fibers from the Latissimus dorsi, a muscle that originates from the iliac crest and extends along the length of the vertebral column, ascending to the 7th thoracic vertebra, are attached to the inferior angle of the scapula. In fish, the scapular blade is a structure attached to the upper surface of the articulation of the pectoral fin, and is accompanied by a similar coracoid plate on the lower surface. The trapezius is inserted into upper border of the crest of the spine and into medial border of the acromion of the scapula. Supraspinous fossa – The area above the spine of the scapula, it is much smaller than the infra spinous fossa and is more convex in shape. Thus it’s seemingly obvious how the action of the muscles attached to the scapula is determined by their points of insertion or origin. It is continuous with the tendon of the long head of the biceps brachii, which blends with it. Additionally, this muscle is also a weak flexor of the arm at the shoulder joint. The scapulae (singular: scapula), parts of the appendicular skeleton, help along with the clavicles in connecting the upper limbs to the axial skeleton. Start studying Attachments of Scapula, Clavicle, Humerus, Forearm. The coracoacromial ligament is connected to the lateral border of the coracoids process and to the medial side of the tip of the acromion process of the scapula. It is marked by three longitudinal ridges. The intrinsic muscles of the scapula include the muscles of the rotator cuff which is responsible for the internal and external rotation of the glenohumeral joint, along with humeral abduction. The abnormal scapular function is called scapular dyskinesis. This side of the scapula is relatively unremarkable, with a concave depression over most of its surface, called the subscapular fossa. The long head of the Biceps originates from a point just a bit farther away from the point of attachment of its short head. Its attachments at the coracoid process of the scapula and the anterior surface of the shaft of humerus make coracobrachialis a strong adductor of the arm. 2. The lateral surface of the scapula meets the humerus. The 1st secondary center develops in the middle of the coracoid process of the scapula throughout the first year and fuses by the 15th year of age. Costal aspect of the scapula with attachments of muscles mapped out. The scapula ossifies from one primary center including seven secondary centers. The different types of scapula surgery involve either operating on the blade of the scapula itself, or on the close attachments of four majorteres minor Pectoralis minor is inserted into the medial border and superior surface of coracoids process of the scapula. This game is part of a tournament You need to be a group member to play the tournament Join group, and play Just play Serratus anterior is inserted along the medial border of the costal surface; 1 digitation from the superior angle to the root of the spine, 2 digitations to the medial border, 5 digitations to the inferior angle of the scapula. The pectoralis minor attaches here, while the coracobrachialis and biceps brachii muscles originate from this projection. This review will focus on the relevant anatomy of the scapula and its muscular attachments, the etiologies of scapular winging as well as the clinical evaluation and management. In humans they are triangular and lie on the upper back between the levels of the second and eighth ribs. The superolateral surface of the costal scapula is the coracoid process. Movements of the Scapula Also share? An abnormally projecting inferior angle of the scapula is identified as a winged scapula and can be produced by paralysis of the serratus anterior muscle. The Teres major, Teres minor and the long head of the Triceps brachii are attached to the lateral border of the scapula. The coracoclavicular ligament is built up of 2 bands: the conoid and the trapezoid, both of which provide vertical stability. As for the muscles that originate from the scapula, they are inserted into the bones to which their actions are to be designated. The back muscles can be three types. Dorsal surfacegives attachment to the spine of the scapula which divides the surface into a smaller supraspino… Acromion – ridge of the spine that extends over the glenohumeral joint and connects with the clavicle. Scapular fractures involving the anatomical neck of the scapula and the surgical neck of the scapula. It goes transversely beyond the scapula, dividing the surface into two-. About & Disclaimer | Terms | Privacy | Contact, Nasas Curiosity Exploration on Mars Mission one Year later, Is Cloning Pets a Prelude to Human Cloning – Yes. Intermediate Back Muscles […] Subscapularis arises from the medial 2/3rds of the subscapular fossa. Fibers from the Latissimus dorsi, a muscle that originates from the iliac crest and extends along the length of the vertebral column, ascending to the 7th thoracic vertebra, are attached to the inferior angle of the scapula. It articulates with the humerus at the glenohumeral joint, and the clavicle at the acromioclavicular joint. The Serratus anterior is inserted to the whole length of the medial border of the scapula, anterior to the three other muscles mentioned above. The margin of the facet on the medial aspect of the acromion of the scapula gives attachment to the capsule of the acromioclavicular joint. The coracoid process is an anteriorly projecting hook-like process on the superolateral edge of the scapula that projects anterolaterally. Spine – This most prominent feature of the posterior scapula. The Coracobrachialis, along with the short head of the Biceps brachii, originate at the tip of the coracoid process. Shmear that Hoovercraft. Scapulothoracic Bursa, within the serratus and the thorax, moreover The anterior surface of the scapula is known as the ‘costal’ surface. How Many Ounces in a Gallon ? Surfaces 1. This part of the bone is almost rod-like: It acts as a lever for the action of the serratus anterior in overhead abduction of the arm. Scapular fractures is an indication of severe chest trauma. A scapula’s posterior surface is crossed obliquely by a prominent ridge, the spine, which The margin of the glenoid cavity of the scapula gives adjunct to the capsule of the shoulder joint and to the glenoid labrum. The primary center develops near the glenoid cavity throughout the 8th week of development. The scapula and arm are connected to the body by multiple muscle and ligament attachments. The scapula is a flat bone extending from the 2nd to the 7th rib on the posterolateral aspect of the chest. Intermediate Back Muscles and c. Deep Back Muscles Superficial Back Muscles Action Movements of the shoulder. This shows how the scapula plays an important role in movement. As you move your arm around your body, your The scapula, also called the shouder blade , is either of two large, roughly triangular flat bones found on either side of the upper back, and forming part of the pectoral ( shoulder ) girdle of humans and other vertebrates. There is a total of 17 muscles connected to the scapula, 11 of which originate from it, whereas 6 others have it as a point of insertion. Another thick ridge adjoins the lateral border. The suprascapular ligament lies above the ligament. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Infraglenoid tubercle – A roughening immediately under to the glenoid fossa, this place is the attachment of the long head of the triceps brachii. The infraspinatus muscle originates from this area. Inferior angle of Scapula T6-T12 Spinous Processes of Vertebrae Dorsolumbar Fascia Crest of Illium Lowest Ribs Infraspinatus arises from medial 2/3rds of the infraspinous fossa, including lower surface of the spine. It is a triangular, flat bone, which attachment for 17 muscles. Copyright © 2016 - 2019 How To Relief. The spine grows taller and thicker as it moves laterally and superiorly toward the shoulder joint. Subscapularis Bursa, within the subscapularis and the serratus. This shows how the scapula is of an important role in the muscular function of the arm, as the muscles attached to the humerus connecting it to the scapula are capable of rotating, extending, abduction the arm as well as bringing about other types of movements. Back Muscles: The muscles of the back that work together to support the spine, help keep the body upright and allow twist and bend in many directions. Another muscle, the Pectoralis minor, comes from the anterior chest wall, to be inserted into the coracoid process of the scapula. It articulates with the humerus at the glenohumeral joint, and the clavicle at the acromioclavicular joint. Anatomy of scapula || Attachments of scapula || Scapula anatomy … It is a triangular, flat bone, which attachment for 17 muscles. It also articulates with the humerus and clavicle, forming the glenohumeral (shoulder) joint and acromioclavicular joint respectively. Woosh. It supplies three longitudinal ridges, which in turn supply connection to the intramuscular tendons of subscapularis muscle. The scapula performs a significant role in shoulder impingement syndrome. The subcoracoid center develops in the root of the coracoid process throughout the 10th year and fuses by the 16th to 18th years of age. All rights reserved. Rhomboideus minor is inserted into medial border (dorsal aspect) opposite to root of the spine. Muscles inserted to the scapula act on it, moving it, whereas those originating from it act on parts to which they are inserted. The differences in diagnosing and managing scapular winging from nerve palsies compared with muscular detachment of the serratus anterior, rhomboids, or trapezius will also be discussed. The other 10 muscles are all inserted into the humerus. Supraglenoid tubercle – A roughening immediately above to the glenoid fossa, this place is the attachment of the long head of the biceps brachii. The glenoid labrum is a fibrocartilaginous rim attached around the margin of the glenoid cavity of the scapula. Popular Scapula 3D models View all No results Available on Store Ligaments of Shoulder Girdle 1.6k Views 0 Comment 8 Like Unlike Thanks! The Supraspinatous and Infraspinatous originate from the supraspinous and infraspinous fossae, respectively, while the Subscapularis originates from the subscapular fossa located on the other (anterior) side of the scapula. One action the scapula performs a motion is the elevation of the acromion process in sequence to avoid impingement of the rotator cuff tendons. The superior part of the lateral border is very significant clinically, as it connects with the humerus to make up the shoulder joint. Teres major arises from lower 1/3rd of the rough strip on the dorsal aspect of the lateral border. Scapula: The scapula is also known as the shoulder blade. Two more muscles that are inserted into the scapula are the Serratus anterior and the Pectoralis minor. Scapula has various bony projections for attachment of muscles, ligaments and other soft-tissue structures.These include the scapular spine, acromion process, coracoid process, scapular notch, lateral scapular spine, and glenoid fossa. Due to its flat nature, the scapula presents two surfaces and three borders; the front-facing costal surface and the rear-facing dorsal surface, as well as the superior, lateral, and medial borders. © 2017 Actforlibraries.org | All rights reserved It is concave and directed medially and forwards. The authors described in this report the mode of attachments of muscles along the medial border of the scapula, as seen in sixty adult Indians. Scapula, either of two large bones of the shoulder girdle in vertebrates. The coracoclavicular ligament is connected to the coracoid process; the trapezoid part on the superior aspect, and the conoid part near the root of the scapula. Those muscles are the: Coracobrachialis, Triceps brachii (long head), Biceps brachii (short and long head), Subscapularis, Deltoid, Supraspinatous, Infraspinatous, Teres major, Teres minor and some few fibres from the Latissimus dorsi. It articulates with the clavicle to form the acromioclavicular joint and also with the head of the humerus to form the shoulder joint. The supraspinatus muscle originates from this area. The front of the scapula (acromion) is also connected to the clavicle (collarbone) through the acromioclavicular joint. Because of its protected location, fractures of the scapula are uncommon. In order to do so, muscles originate from and are inserted into the scapula, connecting it to the humerus of the arm, the vertebral column of the axial skeleton and to other bones of the body, which helps the bone achieve its optimum function, in accordance with the structure it’s connected to. 2. The scapula has two surfaces, three borders, three angles, andthree processes. The two surfaces are the anterior or the costal surface and the posterior or the dorsal surface. anatomy of scapula, borders, surfaces, processes, side determination, muscle attachments, ligament attachments Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The authors described in this report the mode of attachments of muscles along the medial border of the scapula, as seen in sixty adult Indians. The posterior surface is a site of attachment for the majority of the rotator cuff muscles of the shoulder. The acromioclavicular ligament attaches the distal end of the clavicle to the acromion of the scapula and provides horizontal stability. Anatomy of Scapula in 3d along with annotations Borders Scapula has three borders and two basic surfaces. Side determination of scapula || Attachment of scapula || scapula … How To Protect Your Eyes From Electronics Devices? 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