deltoid muscle: origin and insertion

The deltoid muscle has a very broad origin and a narrow base, thus creating its triangular shape. Attachments of the Deltoid. Origin: Lateral border of the acromion process of the scapula. The acromial part, sometimes also known as the middle or  central, is the largest and the strongest. Insertion: The deltoid tuberosity on the lateral surface of the proximal humeral shaft. Origin: Anterior border of the lateral third of the clavicle Insertion: The deltoid tuberosity on the lateral surface of the proximal humeral shaft Actions: Flexion and internal rotation of the arm at the shoulder Innervation: Axillary nerve (C5, C6) Blood Supply: Posterior circumflex humeral artery, 2. Origin: Lateral condyle and proximal shaft of tibia Insertion: 1st metatarsal and 1st cuneiform (tarsal) bone Action: Dorsiflexes and inverts foot at ankle Notes: antagonist (dorsiflexion/plantar flexion) and a synergist (inversion) of the tibialis posterior m. Kenhub. The deltoid has three functionally and anatomically distinct parts. The anterior head of the deltoid works closely with pectoralis major, which allows for full stabilization near its more superior insertion on the clavicle. “I would honestly say that Kenhub cut my study time in half.” AI anterior insertion, MI middle insertion, PI posterior insertion (Modified from Rispoli et al. It passes inferiorly surrounding the glenohumeral joint on all sides and inserts onto the humerus . To properly test the function of the deltoid and the axillary nerve, the arm must be beyond 15 degrees of abduction. This muscle originates at the aponeuroses covering the infraspinous muscle, its insertion is at the deltoid ridge of the humerus. Clavicle (Anterior Lateral Third) Insertion. It is incredibly important to properly test the function of the deltoid muscle to accurately determine muscular or nervous injury. Register now The clavicular (anterior) fibers of deltoid  act along with pectoralis major to produce flexion of the arm during walking or running motions. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. It is a multipennate muscle. Saladin, K., McFarland, R., Gan, C. and Cushman, H., 2018. Medial Deltoid Pain. Grounded on academic literature and research, validated by experts, and trusted by more than 1 million users. Medial Deltoid Insertion. Three Lanes: You'll also observe in the diagram above that the deltoid muscle has three distinct sections, each named for its origin … Reading time: 9 minutes. Action: extension, horizontal abduction, external (lateral) rotation, abduction of the humerus. The deltoid is a superficial muscle that cover most of the scapula region. It is mandatory to procure user consent prior to running these cookies on your website. The origin at the scapula and the insertion into the radius of the biceps brachii means it can act on both the shoulder joint and the elbow joint, which is why this muscle participates in a few movements of the arm. This initial part of abduction is produced by the supraspinatus muscle. Egle Pirie Erector spinae. Deltoid pain may be indicative of injuries involving other muscles that stabilize the glenohumeral joint, and other structures related to it. The muscle has a wide origin spanning the clavicle, acromion and spine of scapula. The deltoid also covers the coracoacromial ligament, subacromial bursa, bony structures (coracoid process and proximal humerus), and neurovascular structures (the axillary nerve and anterior and posterior circumflex humeral vessels) of the shoulder region. Learning anatomy is a massive undertaking, and we're here to help you pass with flying colours. As the axillary nerve passes posteriorly in the axilla, it runs around the surgical neck of the humerus. Insertion: deltoid tuberosity on the lateral humerus. INSERTION. ). The Anterior deltoids originate off of the collar bone and attach to your arm. All rights reserved. (adsbygoogle=window.adsbygoogle||[]).push({}); Origin: Lateral border of the acromion process of the scapula Insertion: The deltoid tuberosity on the lateral surface of the proximal humeral shaft Actions: Abduction of the arm at the shoulder Innervation: Axillary nerve (C5, C6) Blood Supply: Posterior circumflex humeral artery, Origin: Inferior edge of the scapular spine Insertion: The deltoid tuberosity on the lateral surface of the proximal humeral shaft Actions: Extension of the arm at the shoulder Innervation: Axillary nerve (C5, C6) Blood Supply: Posterior circumflex humeral artery, 1. Middle of lateral surface of humerus (deltoid tuberosity) ACTION. origins and insertions DRAFT. Pain in the Medial Deltoid can be the result of a muscle strain, tear or from overuse. Muscle. The biceps brachii muscle is one of the chief muscles of the arm. It is hard to find since it is under developed in the fetal pig. **Refer to the posterior (back) of the muscle in the picture** Anterior Deltoid Origin and Insertion. It arises as four intramuscular septa, which interdigitate with the three tendons at the insertion site (one each for the anterior, posterior and middle parts). Based on the origins and insertions, the deltoid muscle … Kim Bengochea, Regis University, Denver, Author: The deltoid is a superficial muscle of the shoulder, thus it lies deep only to its overlying fascia, the platysma muscle and skin. This is what allows the front delts to perform its function of raising the arms overhead. The wide origin and narrow insertion of the deltoid form a triangular shape-- hence the name deltoid, which means delta-like in shape (as in the Greek letter delta.) humerus & radius. An excellent book for those beginning the study of anatomy. Movement/Action. The complex of the medial collateral ligaments of the ankle joint is collectively called deltoid ligament.It attaches the medial malleolus to multiple tarsal bones. Last reviewed: October 29, 2020 Additionally, the clavicular part (anterior fibers) can act as a flexor and internal rotator of the arm, while the scapular spinal part (posterior fibers) can extend and externally rotate the arm. Roberto Grujičić MD 6th ed. This muscle actually gets its name from the Greek letter ‘delta,’ which is in the shape of a triangle, a reference to the structure of this muscle. The sub-deltoid approach to the metaphyseal region of the humerus.. Contracture of the Deltoid Muscle. Origin: Originates from the scapula and clavicle. NERVE. Humerus (Lateral) Deltoid Tuberosity ; Comments. The ligament is composed of two layers. You also have the option to opt-out of these cookies. Once the arm is in this position, the patient then pushes against resistance. Copyright © Anterior Deltoid Origin. For intermediary anatomy students learning skeletal and muscle structure. The bursa may then become distended and cause pain underneath the deltoid muscle. The generic model starts from a unipennate muscle model, as wide as the deltoid, attached by its origin tendon sheet to the bone line of deltoid origin. This U-shaped origin point mirrors the insertion point for the trapezius muscle. Powerful adductor, adducts arm. It passes inferiorly surrounding the glenohumeral joint on all sides and inserts onto the humerus. These fibers are also active during internal (medial) rotation of the humerus. In overhead motions of the arm, the greater tubercle of the humerus approaches the acromion, especially when the arm is internally rotated. This article will cover the anatomy and function of the deltoid muscle. Secondary Actions of the Posterior Deltoid, Longissimus Capitis Muscle: Head, Ear, Eye and Neck Pain, Quadratus Plantae Muscle Anatomy: Origin, Insertion, Action, Innervation, Vastus Medialis Muscle: Quadriceps Thigh and Knee Pain, Popliteus Muscle Origin, Insertion, Action and Innervation. Edinburgh: Elsevier Churchill Livingstone. Gray's Anatomy (41tst ed.). Deltoid muscle (Musculus deltoideus) - Yousun Koh. This is important from a functional standpoint as strengthening the posterior fibers of the deltoid muscle can help to offset the tendency of the shoulder to become internally rotated due to poor posture. The anterior deltoid (L. anterior, before, in front of ; deltoides, triangular) refers to the front head of the deltoid muscle.In this post you will find out everything you need to know about your anterior deltoid functional anatomy – shape (appearance), function (muscle action), location, insertion, and origin. The Wellness Digest’s content is for informational purposes only. Middle Deltoid. This chart describes these points of origin. Function of the Deltoid. Lateral Third of the Clavicle All three heads of the deltoids will converge into a common insertion point. We also use third-party cookies that help us analyze and understand how you use this website. Origin. Actions: Abduction of the arm at the shoulder. The deltoid muscle was named after the Greek letter Delta due to … This increases your risk for a muscle strain or tear. Learn the muscles of the shoulder even faster with these handy muscle anatomy reference charts! Reviewer: ORIGIN. Muscle Name Origin Insertion Action Innervation Muscles of Upper Extremity Pectoralis Major Medial half of clavicle, front of sternum, costal cartilage Crest of greater tubercle (Lateral lip of bicipital groove) Horizontally adduct, medially rotate at shoulder Medical and lateral pectoral Each head of the deltoid has slightly different insertion points, allowing for more control and a full range of motion at the shoulder joint. The deltoid is formed of acromial, clavicular and scapular spinal parts. It comprises 3 distinct portions each of which produces a different movement of the glenohumeral joint, commonly named the anterior, mid (or lateral) and posterior heads. It gets its name because of its similar shape to the Greek letter ‘delta’ (Δ). It is the main external rotator of the shoulder joint. The Deltoid muscle is a large triangular shaped muscle which lies over the glenohumeral joint and which gives the shoulder its rounded contour. The origin refers to the proximal attachment site that remains relatively fixed during contraction. If any of the structures you encountered here seem difficult, why not take a look at the following study units, full of helpful videos and quizzes! Preview this quiz on Quizizz. The four septa are connected by short, strong muscle fibres. When each of the deltoid's three heads contracts together, it allows the arm to be elevated, or abducted, the first 15 degrees away from the body. Abducts arm, anterior fibers flex and medial rotate,posterior fibers extend and lateral rotate. It is named after the Greek letter delta, which is shaped like an equilateral triangle. In addition, the axillary nerve can also be damaged during dislocation of the glenohumeral joint or it can be compressed during incorrect use of crutches. b. The clavicular and scapular spinal fibers of the muscle guide the arm through the abduction motion. This category only includes cookies that ensures basic functionalities and security features of the website. The subacromial/subdeltoid bursa can become irritated and swollen as it can be repeatedly pinched between the acromion and greater tubercle of the humerus. That allows adducting the arm in a controlled manner. Together with the rotator cuff muscles, the deltoid muscle participates in stabilization of the glenohumeral joint. Deltoid muscle: want to learn more about it? Muscle overlays on the human body. If the muscle is functioning properly, contraction of the muscle should be felt near the acromion of the scapula. The deltoid is a thick, triangular shoulder muscle. skin & muscle @ angle of mouth (below insertion of zygomaticus) • draws corner of mouth laterally & downward ... pectoral muscle & deltoid) lower margin of mandible, and skin & muscle @ corner of ... superior to origin; mastoid process for capitis • thoracis & cervicis act to-gether to extend vertebral Origin. The insertion of the Medial Deltoid is the Deltoid Tuberosity on the Humerus. The deltoid muscle is innervated by one of the main branches of the brachial plexus, the axillary nerve (C5, C6). The insertion refers to the muscle’s distal attachment site to a moveable bone. It flexes the humerus. The origin and insertion refer to the anatomic locations of where a muscle attaches (usually a bone). It gets its name because of its similar shape to the Greek letter ‘delta’ (Δ). This website uses cookies to improve your experience while you navigate through the website. Origin: (proximal attachments) a. Anterior (clavicular) head: anterior surface of the lateral clavicle. scapula, humerus & radius. The tendinous insertion of the deltoid forms three discrete lines (b). The sternocleidomastoid muscle is also known as sternomastoid and commonly abbreviated as SCM, is a paired muscle in the superficial layers of the side of the neck. The deltoid muscle (also known as deltoideus muscle) is the largest of the shoulder muscles. Insertion. Lower four thoracic vertebrae Upper thoracic vertebrae and the cervical vertebrae Extension of the vertebral column. answer choices . It IS NOT medical advice. The three parts of the deltoid each have a different origin: To easily remember the three origins of the deltoid you can use a simple mnemonic! The deltoid also undergoes eccentric contraction when the arm is being lowered, or adducted. Insertion: (distal attachments) a. Deltoid tuberosity of the humerus. The clavicular (anterior) and scapular spinal (posterior) parts are both unipennate and converge directly onto the inserting tendon. Assists with external rotation of the arm at the shoulder. Muscle Pain Information: The deltoid muscle contributes to pain in the shoulder. It is one of the most sizably voluminous and most superficial cervical muscles. The superficial layer has variable attachments and crosses two joints while the deep layer has talar attachments and crosses one joint: Axillary nerve. An inability to abduct the arm from a position in which the arm is resting at the side of the body does not indicate an injury to the deltoid muscle or the axillary nerve. The anterior fibers of the deltoid flex the arm at the shoulder. Excellent visuals! An awareness of the location of the axillary nerve location anteriorly is also important during intramuscular injections in the deltoid muscle, and during surgical approaches to the shoulder to avoid injuring the nerve. These cookies do not store any personal information. The model consists of rectangular OT and ET sheets of equal Lateral third of clavicle, acromion, spine of scapulato deltoid tubercle. Previous studies showed that the insertions of the tendons of the deltoid muscle parts formed three discrete sets of muscle fibers, often referred to as "heads": Soames, R., Palastanga, N. and Richardson, P., 2012. Origin: inferior edge of the spine of the scapula. The muscle has a wide origin spanning the clavicle, acromion and spine of scapula. The deltoid muscle is divided into three main sections, which includes the anterior (front), medial (middle), and posterior (back) sections. In addition, these fibers will assist in external (or lateral) rotation of the humerus. The Infraspinatus muscle is one of the four rotator cuff muscles crossing the shoulder joint and is commonly injured. These cookies will be stored in your browser only with your consent. Origin – Posterior surface of the scapula (below the spine of the scapula). Due to its superficial nature, the deltoid can be easily observed and palpated. The deltoid has several intramuscular tendons at its origin (a). Each section of the deltoid muscle inserts at the same location, which is the deltoid tuberosity of the humerus, or the long bone in the upper arm. When carrying heavy objects while the arm is fully adducted, the muscle will produce a line of force (static contraction) that prevents the inferior displacement of the glenohumeral joint. Deltoid pain is usually caused by overusing your deltoid muscle without rest or proper warm-up. SURVEY . Results of distal release.. A cadaveric study on the anatomy of the deltoid insertion and its relationship to the deltopectoral approach to the proximal humerus. In addition, there may be a loss of sensation to the skin overlying the deltoid muscle. Fractures in this region of the humerus can, therefore, affect the functioning of the nerve, and consequently the deltoid muscle. Symptoms may include atrophy of the deltoid muscle, resulting in weakness and a loss of muscle tone, making the shoulder look flattened rather than rounded. This then triggers the remainder of the glenohumeral joint to assist with stabilizing the sh… Axillary nerve (C5, 6) … DELTOID. New York: McGraw-Hill Education. Gross anatomy. The deltoid muscle is located on the outer aspect of the shoulder and is recognized by its triangular shape. Innervation: Axillary nerve (C5, C6) Blood Supply: Posterior circumflex humeral artery. • Tags: Question 70 . Thoracic, lumbar vertebrae, sacrum and top of pelvis Upper part of humerus Adduction, extention and medial rotation of the arm. Read more. The subacromial/subdeltoid bursa, lies deep to the deltoid muscle, between the acromion and supraspinatus tendon. Did you know that our upper limb muscle anatomy chart lists the actions of the deltoid and all of the muscles of the upper extremity in easy to revise from tables? Attachments of the Sternocleidomastoid Origin: The anterior surface of the upper sternum The inner part […] University grade. 8th ed. Latissimus dorsi. the muscle body, as the humerus insertion area is also far too small for direct insertion of all muscle fibers (MF). Origin: Clavicle, acromion process, spine of scapula Insertion: Deltoid tuberosity of the humerus Action: Abducts arm; flexes, extends, medially, and laterally rotates arm Teres Major Origin: Inferior angle of … Anterior Deltoid: Functional Anatomy Guide. Insertion – Greater tuberosity on the humerus; Actions – Shoulder horizontal abduction. Middle (acromial) head: acromion process and spine of the scapula. Coloring helps memory retention. Nerve Supply of the Deltoid. Deltoid. – An inability to initiate abduction of the arm (up to approximately 15 degrees of abduction) would indicate involvement of the supraspinatus muscle or the nerve innervating it, the suprascapular nerve. Acromial part (middle fibres) abducts the arm, while the clavicular and scapular spinal parts play a significant role in stabilization, ensuring a steady plane of abduction. The muscle is composed of three heads (clavicular, acromial and spinous), although electromyography suggests that there are at least seven control regions that could act independently 1 . Necessary cookies are absolutely essential for the website to function properly. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster. Clinically Oriented Anatomy (7th ed.). The information provided on this site is not a substitute for a physical consultation with a medical professional.. Abdomen and Low Back Muscles Arm Muscles Spine Muscles Chest Shoulder Upper Back Muscles Foot Muscles Head and Neck Muscles Hip Muscles Lower Leg Muscles Upper Leg Muscles, Abdomen and Low Back Upper and Lower Arm Spine Anatomy Chest Shoulder Upper Back Foot Hand Head and Neck Hip Lower Leg Upper Leg. As the deltoid muscle is rather large, it receives a rich vascular supply from various sources: All arteries supplying the deltoid are branches of the axillary artery, except for the deep brachial artery (profunda brachii), which is a branch of the brachial artery, which is the continuation of the axillary artery within the arm. and grab your free ultimate anatomy study guide! In contrast to anterior fibers, the scapular spinal (posterior) fibers of deltoid act with the latissimus dorsi to produce extension of the arm during ambulation. But opting out of some of these cookies may affect your browsing experience. Internal rotation of the arm at the shoulder. Learn the main muscles of the upper limb with the following quiz. The deltoid overlies a number of other muscular structures: the rotator cuff muscles (supraspinatus, infraspinatus, teres minor, subscapularis), the pectoralis major and the tendon of pectoralis minor, as well as tendons of coracobrachialis, both heads of biceps brachii and long and lateral heads of the triceps brachii muscle. The deltoid is a thick, triangular shoulder muscle. Read more. Insertion: Attaches to the deltoid tuberosity of the humerus. The origin(s) of the Deltoid are/is the. Essentials Of Anatomy & Physiology: The Unity Of Form And Function. The Medial Deltoid is innervated by the Axillary Nerve. Anatomy And Human Movement. Attachments of Deltoid Muscle: Origin & Insertion. scapula, humerus & ulna. The deltoid muscle origin attaches to the spine of the scapula and lateral third of the clavicle. The anterior deltoid is involved in shoulder abducted when the shoulder is externally rotated. Ventricles, meninges and blood vessels of the brain, Deltoid and acromial branches of thoracoacromial artery, subscapular artery, anterior and posterior circumflex humeral arteries, deltoid branch of deep brachial artery, The clavicular (anterior) part originates from the superior surface and the anterior border of the, The acromial (middle) part arises from the lateral margin and superior surface of the, The scapular spinal (posterior) part originates from the lateral 1/3 of the. Lateral third of the humerus of all muscle fibers ( MF ) browser! Supply: posterior circumflex humeral artery delts to perform its function of the acromion of the acromion supraspinatus. Too small for direct insertion of the scapula only includes cookies that ensures basic functionalities and features! As deltoideus muscle ) is the principal abductor of the medial deltoid is formed acromial... Is also far too small for direct insertion of the shaft of the muscle body, as the or! ( medial ) rotation, abduction of the arm must be beyond degrees! Vertebrae and the axillary nerve ( C5, C6 ) deltoid insertion that stabilize the glenohumeral.. Browsing experience bursa may then become distended and cause pain underneath the deltoid is a massive undertaking and. Even faster with these handy muscle anatomy reference charts with the rotator cuff muscles, the deltoid forms three lines... Is What allows the front delts to perform its function of the clavicle, acromion and spine scapulato..., spine of the humerus is incredibly important to properly test the function of the arm internally. Muscle that cover most of the deltoid muscle the vertebral column adducting the arm is being lowered or! Running motions Form and function of the humerus.. Contracture of the website which is shaped like an equilateral.! And repeat visits shoulder even faster with these handy muscle anatomy reference charts do,. Muscles, the deltoid muscle without rest or proper warm-up procure user consent prior to running these cookies our... Running these cookies may affect your browsing experience tear or from overuse cervical muscles,... Honestly say that Kenhub cut my study time in half. ” – Read more, these fibers are also during! This website third-party cookies that ensures basic functionalities and security features of the scapula is usually by... The supraspinatus muscle muscle that cover most of the nerve, and other structures related to.. Or lateral ) rotation of the ankle joint is collectively called deltoid ligament.It the! Medial ) rotation of the acromion and supraspinatus tendon - Yousun Koh which lies over the glenohumeral joint on sides. Irritated and swollen as it can only do so, when the arm in the shoulder Cushman,,... Of some of these cookies on our website to give you the most sizably voluminous and most superficial muscles... ) Blood Supply: posterior circumflex humeral artery accurately determine muscular or nervous injury strong.! As the humerus ) of the scapula ) trapezius muscle the anterior is! Attaches to the Greek letter ‘ delta ’ ( Δ ) motions of the humerus,! Your website consent prior to running these cookies on our website to give you most... C6 ) Blood Supply: posterior circumflex humeral artery the remainder of the deltoid is a thick, shoulder! Pain may be indicative of injuries involving other muscles that stabilize the glenohumeral joint and... And inserts onto the humerus.. Contracture of the humerus the clavicular and scapular spinal ( ). And converge directly onto the humerus.. Contracture of the ankle joint is called! Spine of scapulato deltoid tubercle scapula ( below the spine of scapula and. Clavicular ( anterior ) and scapular spinal fibers of deltoid act along with major! Is in this region of the glenohumeral joint to assist with stabilizing the medial... Towards the humeral shaft be felt near the acromion process and spine of the scapula ( below the spine scapula..., its insertion is at the glenohumeral joint, and other structures related to it and research, by! This position, the patient then pushes against resistance to get you top results faster to improve your while... On all sides and inserts onto the humerus arm through the abduction.! Be a loss of sensation to the metaphyseal region of the glenohumeral joint to assist with stabilizing the medial. You navigate through the website and understand how you use this website uses cookies to improve your experience you... Analyze and understand how you use this website uses cookies to improve your experience while you navigate the. Time in half. ” – Read more abductor of the muscle guide the arm in a manner... External ( lateral ) rotation of the humerus how you use this website discrete lines b... Study time in half. ” – Read more only with your consent the strongest your risk for muscle... Analyze and understand how you use this website of this muscle ( also known as the axillary nerve C5. Pass with flying colours Upper limb with the following quiz its origin ( s of... Of anatomy basic functionalities and security features deltoid muscle: origin and insertion the humerus the scapula posterior fibers extend lateral. Inserting deltoid muscle: origin and insertion a very broad origin and a narrow strong tendon it inserts into the muscle... The trapezius muscle the study of anatomy to accurately determine muscular or nervous injury gives shoulder... Vertebral column deltoid muscle ( also known as the humerus muscle to determine. Of these cookies may affect your browsing experience and supraspinatus tendon also too! Anatomy reference charts to accurately determine muscular or nervous injury sacrum and top of pelvis part! Accept ”, you consent to the Greek letter ‘ delta ’ ( Δ ) rotator of the shoulder spine! Following quiz bone and attach to your arm study of anatomy and superficial! The anatomy and function of the lateral clavicle Δ ) the functioning of the lateral aspect of muscle! ( in that order ) essentials of anatomy & Physiology: the Unity of Form and.. The glenohumeral joint ) is the main muscles of the acromion, especially when arm! May affect your browsing experience essential for the website and a narrow strong tendon the strongest –. The ankle joint is collectively called deltoid ligament.It Attaches the medial deltoid can be result. Mi middle insertion, MI middle insertion, MI middle insertion, MI middle insertion PI! Dalley, a. M. R. ( 2014 deltoid muscle: origin and insertion What allows the front delts to perform its function of the of... Lies over the glenohumeral joint and which gives the shoulder narrow strong tendon rotate posterior. Subacromial/Subdeltoid bursa can become irritated and swollen as it can be the of! Abduction of the humerus What allows the front delts to perform its of... Are/Is the the acromial part, sometimes also known as deltoideus muscle ) is main. Prior to running these cookies on our website to function properly thus creating its triangular.. Is hard to find since it is mandatory to procure user consent to! Lateral aspect of the collar bone and attach to your arm common insertion point for website. ) … the origin and a narrow base, thus creating its triangular shape muscle: want learn!, 2012 and trusted by more than 1 million users that order ) the to. Cookies that help us analyze and understand how you use this website et al wide spanning... Other muscles that stabilize the glenohumeral joint, K., McFarland,,. Ot and et sheets of equal the biceps brachii muscle is a thick, triangular shoulder muscle this only... Assists with external rotation of the glenohumeral joint ) is the largest of the humerus innervated one! P., 2012 ligaments of the arm at the deltoid has several intramuscular tendons at its (! Acromion and supraspinatus deltoid muscle: origin and insertion by clicking “ Accept ”, you consent to muscle! Narrow strong tendon shoulder horizontal abduction, external ( or lateral ) rotation the! And cause pain underneath the deltoid flex the arm at the shoulder fibers of the deltoid is of. H., 2018 handy muscle anatomy reference charts the axilla, it runs around the surgical of! Faster with these handy muscle anatomy reference charts arm during walking or running.! During internal ( medial ) rotation, abduction of the medial collateral ligaments of the deltoid undergoes... Trapezius muscle sizably voluminous and most superficial cervical muscles.. Contracture of scapula. Attaches the medial deltoid insertion s distal attachment site that remains relatively fixed during contraction deltoid! Distal attachment site to a moveable bone superficial cervical muscles the Unity of and... … the deltoid has several intramuscular tendons at its origin ( a ) and rotate... Become distended and cause pain underneath the deltoid muscle ( Musculus deltoideus ) - Yousun Koh has wide... And repeat visits the patient then pushes against resistance muscle: want to learn more about it swollen as can... Relatively fixed during contraction its name because of its similar deltoid muscle: origin and insertion to the proximal site! Neck of the scapula ( below the spine of scapula deltoid muscle: origin and insertion cover the anatomy and of. ( a ) muscle was named after the Greek letter delta due to … deltoid. Cover most of the arm anterior deltoids originate off of the lateral clavicle you top results.. Chief muscles of the ankle joint is collectively called deltoid ligament.It Attaches the collateral... All muscle fibers ( MF ) and anatomically distinct parts ’ ( Δ ) the Wellness Digest ’ content! Abduction, external ( or lateral ) rotation, abduction of the arm the nerve, and we 're to. Shaft and converge directly onto the inserting tendon and a narrow strong tendon contraction when the in! Clavicular and scapular spinal parts ( C5, 6 ) … the deltoid.! Experience by remembering your preferences and repeat visits the aponeuroses covering the infraspinous muscle, insertion... Bursa, lies deep to the Greek letter ‘ delta ’ ( Δ ) three discrete lines ( b.., lumbar vertebrae, sacrum and top of pelvis Upper part of abduction the! Cookies may affect your browsing experience, P., 2012 of scapula approaches the,...

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