Attachments of Levator Scapulae: Origin & Insertion Origin: (proximal attachments) a. Transverse processes of the C1-C4. The glenoid labrum helps to deepen the “socket”. This side of the scapula is relatively unremarkable, with a concave depression over most of its surface, called the subscapular fossa. Scapula: The scapula is also known as the 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) Anatomy of scapula || Attachments of scapula || Scapula anatomy … Teres minor arises from upper 2/3rds of the rough strip on the dorsal surface along the lateral border. 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. The other 10 muscles are all inserted into the humerus. Muscles attached to the three borders of scapula Medial border – Costal surface (including that of inferior angle) provides attachment( insertion) to serratus anterior . In humans they are triangular and lie on the upper back between the levels of the second and eighth ribs. A scapula’s posterior surface is crossed obliquely by a prominent ridge, the spine, which 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. 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. One action the scapula performs a motion is the elevation of the acromion process in sequence to avoid impingement of the rotator cuff tendons. Acromion – ridge of the spine that extends over the glenohumeral joint and connects with the clavicle. 1. The scapula performs a significant role in shoulder impingement syndrome. Inferior belly of omohyoid arises from the upper border near suprascapular notch of the scapula. The margin of the glenoid cavity of the scapula gives adjunct to the capsule of the shoulder joint and to the glenoid labrum. It goes transversely beyond the scapula, dividing the surface into two-. The spinoglenoid ligament links the spinoglenoid notch of the scapula. Another thick ridge adjoins the lateral border. 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. It articulates with the humerus at the glenohumeral joint, and the clavicle at the acromioclavicular joint. If the scapula defaults to properly elevate the acromion, shoulder impingement may develop. 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. Subscapularis Bursa, within the subscapularis and the serratus. 2. 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. The supraspinatus muscle originates from this area. Side determination of scapula || Attachment of scapula || scapula … 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. SCAPULA Provide attachment for three different groups of muscles. The coracoid process is an anteriorly projecting hook-like process on the superolateral edge of the scapula that projects anterolaterally. 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. Scapula: The scapula is also known as the shoulder blade. The Coracobrachialis, along with the short head of the Biceps brachii, originate at the tip of the coracoid process. © 2017 Actforlibraries.org | All rights reserved As for the muscles that originate from the scapula, they are inserted into the bones to which their actions are to be designated. The infraspinatus muscle originates from this area. Review the attachments, actions and innervation of the muscles attached onto the scapula. Movements 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 posterior 4. It articulates with the clavicle to form the acromioclavicular joint and also with the head of the humerus to form the shoulder joint. The anterior surface of the scapula is known as the ‘costal’ surface. Glenoid fossa – A shallow cavity, which connects with the humerus to settle the glenohumeral joint. Scapulothoracic Bursa, within the serratus and the thorax, moreover The suprascapular vessels and nerve passageway to it. 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. 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 coracoclavicular ligament is built up of 2 bands: the conoid and the trapezoid, both of which provide vertical stability. The pectoralis minor attaches here, while the coracobrachialis and biceps brachii muscles originate from this projection. Another muscle, the Pectoralis minor, comes from the anterior chest wall, to be inserted into the coracoid process of the scapula. 2. Two more muscles that are inserted into the scapula are the Serratus anterior and the Pectoralis minor. The spine grows taller and thicker as it moves laterally and superiorly toward the shoulder joint. The front of the scapula (acromion) is also connected to the clavicle (collarbone) through the acromioclavicular joint. Supraglenoid tubercle – A roughening immediately above to the glenoid fossa, this place is the attachment of the long head of the biceps brachii. The scapula has three borders The abnormal scapular function is called scapular dyskinesis. Insertion: (distal attachments) a. Medial border of the scapula between spine and superior angle. 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. Also share? The Teres major, Teres minor and the long head of the Triceps brachii are attached to the lateral border of the scapula. 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. Costal aspect of the scapula with attachments of muscles mapped out. The coracoacromial ligament connects the coracoid process to the acromion of the scapula. 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. 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 this situation, the sides of the scapula nearest the spine are located outward and backward. The scapula can do six moves: Costal Surface The Deltoid originates from both the scapula and the clavicle, so just like the Trapezius, it’s attached to the spine of the scapula. The posterior surface of the scapula faces outwards. levator scapulae, rhomboideus minor and romboideus major. , and other study tools attachments, actions and innervation of the scapula acromion... More muscles that are inserted into upper border of the glenohumeral ( shoulder )! 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