Shoulder abduction refers to moving the upper arm away from the midline of the body such as when a person raises their arm out to the sides of the body. The muscles used in shoulder abduction ...Nov 3, 2023 · Muscles of the shoulder. Table quiz. Definition and function. Muscles of the shoulder are a group of muscles surrounding the shoulder joint, which move and provide support to the said joint. Muscles. Anterior axio-appendicular muscles : Pectoralis major, pectoralis minor, subclavius and serratus anterior. Posterior axio-appendicular muscles. To view more of Dr. Donald Ozello’s upcoming real-time webinars and online courses as well as a complete course catalog please visit our website. www.ccedsem...Shoulder Shoulder ABduction. Myotome assessed: C5 (axillary nerve) Muscles assessed: deltoid (primary) and other shoulder abductors. Instructions: 1. Ask the patient to flex their elbows and ABduct their shoulders to 90°: “Bend your elbows and bring your arms out to the sides like a chicken.” 2.Manual Muscle Testing of Shoulder Abduction Testing muscle. Deltoid middle head Supraspinatus. Patient Positioning. the patient should be in a Seated position, shoulder kept in the scapular plane 25 degrees anterior to the frontal plane, thumb directed upward. to assess Grades 0-2 there is no ‘gravity minimal’ posture for this motion ...Sizes: universal Breg's Shoulder Abduction Pillow is a shoulder immobilizer designed for varying degrees of abduction (10°- 75°).The shoulder complex is the connection of the upper arm and the thorax. Comprising numerous ligamentous and muscular structures, composed of the clavicle, ... It provides most of its extensibility anteriorly and inferiorly and it “Winds up” during abduction and external rotation.The shoulder is one of the most mobile joints in the body with a high range of motion. So, when you feel pain on your shoulder, movement becomes strained and greatly uncomfortable....Mar 31, 2020 · The forearm rests over the pillow, keeping the shoulder slightly separated off the body. This position, called “abduction”, relaxes some of the structures of the shoulder, protecting them while they heal. The abduction sling also keeps the shoulder in some outward or external rotation, beneficial for some conditions. Support the patient's arm with the shoulder abducted 90 degrees and the elbow flexed 90 degrees. Detects anterior shoulder subluxation or dislocation. Inferior ...The glenohumeral joint does not allow movements of the shoulder girdle itself, but it does allow movements of the upper limb. In fact, it is one of the most mobile joints of the human body, permitting a …Immobilizes the shoulder in 0⁰, 15⁰, 30⁰, 60⁰, or 90⁰ of abduction. Optional External Rotation Accessory immobilizes the shoulder in 10⁰, 25⁰, and 30⁰ of external rotation. Open design improves airflow and patient comfort. Semi-rigid torso design prevents migration. Adjustable shoulder strap relieves tension and stress on the neck.May 15, 2000 · Shoulder abduction involves the glenohumeral joint and the scapulothoracic articulation. Glenohumeral motion can be isolated by holding the patient's scapula with one hand while the patient ... Mar 27, 2023 · The range of motion is normal, with positive provocative tests like Hawkins (pain on passive forced internal rotation of the shoulder). The drop arm test is confirmatory. If weakness is present on shoulder abduction, a rotator cuff tear should be suspected (MRI is the best test for diagnosis of rotator cuff tear). Treatment for RCS Jun 23, 2020 ... The existence of shoulder abduction and finger extension movement capacity shortly after stroke onset is an important prognostic factor, ...The goal of exercise as part of the physiotherapy management is to correct modifiable physical impairments thought to contribute to pain and dysfunction, rather than to treat the pathology. Therapeutic exercise is commonly used in the treatment and management of a range of shoulder disorders, is commonly advocated to address dysfunctions in ...technique. abduct arm to 90°, angle forward 30° (bringing it into the scapular plane), and internally rotate (thumb pointing to floor). Then press down on arm while patient attempts to maintain position testing for weakness or pain. Drop Sign. tests for function/integrity of supraspinatus.To the extent that the cuff musculature is deficient, a greater amount of translation is anticipated, which places additional requirements on the optimal glenoid design to accommodate the increased translation. 85 As is discussed later, probably more important is that the initiation of shoulder abduction results in forces directed toward the ...Arthritis is a general term for a group of painful conditions that involve inflammation and stiffness of the joints. The different types of arthritis can occur in any joint in the ...Learn how to test the range of motion, inspection and special tests of the shoulder joint, including abduction, in this tutorial from Stanford Medicine 25. Abduction is one of the …Apr 25, 2023 ... Shoulder Abduction Side Lying Crossbar Rotation0⁰ Paddle PositionF (Flat) Starting PositionSide lying Lying...Aug 8, 2023 · The shoulder joint, also known as the glenohumeral joint, is a ball and socket joint with the most extensive range of motion in the human body. The shoulder muscles have a wide range of functions, including abduction, adduction, flexion, extension, internal and external rotation.[1] The central bony structure of the shoulder is the scapula, where all of the muscles interact. At the lateral ... Nov 2, 2023 · Learn about the anatomy and function of the shoulder joint, a ball and socket synovial joint with a wide range of movement. Find out how abduction is produced by different muscles and what are the common injuries and dislocations of the shoulder joint. In conclusion, the closer to 90° shoulder abduction the greater UT, MT, and PD activity, on the other hand, the closer to 0° shoulder abduction the greater peak force, UL, and LL activity during ...Jul 22, 2014 ... Adduction is the movement of a body part toward the body's midline. So, if a person has their arms straight out at the shoulders and brings them ...Aug 6, 2021 · technique. abduct arm to 90°, angle forward 30° (bringing it into the scapular plane), and internally rotate (thumb pointing to floor). Then press down on arm while patient attempts to maintain position testing for weakness or pain. Drop Sign. tests for function/integrity of supraspinatus. Supraspinatus muscle [edit | edit source]. Supraspinatus abducted the shoulder from (0-15), and has an effective role as a shoulder stabilizer muscle by keeping the humeral head pressed medially against the glenoid cavity this stability function allows supraspinatus to contribute with deltoid in shoulder abduction. The deltoid muscle is an anterior stabilizer of the glenohumeral joint with the arm in abduction and external rotation and as such the stabilizing function of the deltoid muscle takes on more importance as the shoulder becomes unstable . Traditionally many strength training exercises place emphasis on the anterior deltoid, which could encourage ... Shoulder abduction: Wrap the exercise band around a heavy, stable object near your foot. Grab the band with the hand of your injured shoulder. Keep your arm straight. Slowly raise your arm to the side with your thumb pointing up. Then, slowly pull the band over your head as far as you can without pain.Aug 29, 2019 ... In this video I show you the Shoulder Abduction Sign and what it means. This is a nice little test to help determine if your patient had ...Introduction: These exercises are recommended by us for you to perform on your own to regain your shoulder range of motion. These should be done at least once per day but not more than twice in one day. It is best to take some sort of medicine prior to the exercises (Tylenol, Ibuprofen/Advil, Naproxen/Aleve, pain medication) to make them more ... Mar 31, 2020 · The forearm rests over the pillow, keeping the shoulder slightly separated off the body. This position, called “abduction”, relaxes some of the structures of the shoulder, protecting them while they heal. The abduction sling also keeps the shoulder in some outward or external rotation, beneficial for some conditions. Arthritis is a general term for a group of painful conditions that involve inflammation and stiffness of the joints. The different types of arthritis can occur in any joint in the ...The ST joint is responsible for about one third of shoulder abduction [20, 22]. Muscular Anatomy. There are 17 muscular attachments along the shoulder [23, 24]. Key muscles of the shoulder motion include the rotator cuff muscle complex, deltoid, biceps brachii, teres major, coracobrachialis, pectoralis, and latissimus dorsi.The shoulder is a complex anatomical structure consisting of four joints. [1] Movements at the shoulder enable us to move and position our arm and hand in space. The muscles …Provides positional support, immobilization, and protection of the arm and shoulder Contoured-foam positioning pillows provide choice of 45º or 80º of ...Sep 21, 2023 ... Shoulder abduction involves lifting the arms out to the side (as with a lateral dumbbell raise), while shoulder adduction means lowering the ...Jun 23, 2020 ... The existence of shoulder abduction and finger extension movement capacity shortly after stroke onset is an important prognostic factor, ...Aug 29, 2019 · In this video I show you the Shoulder Abduction Sign and what it means. This is a nice little test to help determine if your patient had cervical nerve root ... Here is a great evidence-based shoulder exercise to increase mid and lower trap muscle activation. According to Maenhout et al 2016, the highest middle trapezius and lower trapezius muscle activation were found in prone exercises. Why is training the scapular stabilizers at a 90/90 degree shoulder abduction and external rotation so important?Learn how to do shoulder abduction and adduction exercises with or without weights or bands. These exercises work the muscles at the back of your shoulder …Exercises for Shoulder Adduction: Lat Pull-Downs, Pull-Ups, and Straight-Arm Pull-Downs. There are several exercises that are effective for shoulder abduction, including pull-ups, lat pull-downs, and straight arm pull-downs. Performing all of these exercises in your routine will be the best way to provide well-rounded functional strength …Oct 16, 2016 · Abduction in the scapular plane is created by both joints in a movement termed “scapulohumeral rhythm.” Shoulder abduction in the scapular plane is described in a 2:1 ratio between glenohumeral and scapulothoracic motion [2, 3], with some variation in the first 30° of abduction (Fig. 1.2) [2, 4, 5]. The sternoclavicular and ... Shoulder Forward Elevation (Assisted) This exercise can be done either lying down (A) or sitting down (B). Clasp your hands together and lift your arms above your head. Keep your elbows as straight as possible. Maintain the elevation for 10 to 20 seconds. Slowly lower your arms. Repeat 10 to 20 times per session. Shoulder abduction is demonstrated starting from the arm at the side with th... In this video, the motion of bringing arm out to the side is shoulder abduction. Anatomy Video Lectures. Anatomy Video Lectures. From a channel with a health professional licensed in Germany. The muscles of the shoulder are associated with movements at the shoulder joint. They produce the characteristic shape of the shoulder, and can be divided into two groups:The shoulder is one of the most mobile joints in the body with a high range of motion. So, when you feel pain on your shoulder, movement becomes strained and greatly uncomfortable....Soothing pain and inflammation is typically the goal of any at-home treatments for shoulder pain. Healthline points out several effective methods, including the following: If you’v...To the extent that the cuff musculature is deficient, a greater amount of translation is anticipated, which places additional requirements on the optimal glenoid design to accommodate the increased translation. 85 As is discussed later, probably more important is that the initiation of shoulder abduction results in forces directed toward the ...The purpose of this study was to compare torque produced during isokinetic testing of shoulder abduction in the coronal plane and the scapular plane. Twenty ...Shoulder Abduction Pillow. A shoulder abduction pillow is an arm sling that offers support after an operation or other type of damage. These shoulder abduction pillows have a cushion that makes it possible to detach the arm from the body without using the shoulder abduction muscles. Shoulder Abduction DegreesBlue Ridge HealthCare's Sports Medicine team members illustrate how to do Shoulder Abduction - Wand Exercise - AAROM exercise for shoulder injuries.Musculus teres minor 1/2 Synonyms: none In the human body, the rotator cuff is a functional anatomical unit located in the upper extremity . Its function is related …Instructions: Ask the patient to abduct their shoulder, whilst you simultaneously palpate the inferior pole of the scapula. Assess the degree and smoothness of scapular movement. On average 50-70% of the scapula’s initial movement occurs at the glenohumeral joint.Following a well-structured conditioning program will also help you return to sports and other recreational activities. Click to view and download this handout. This shoulder rehabilitation program focuses on strengthening the muscles that support your shoulder to help keep your shoulder joint stable, relieve pain and prevent further injury. The purpose of this double-blind, randomized controlled pilot study was to compare the effectiveness of four physical therapy interventions in the treatment of primary shoulder impingement syndrome: 1) supervised exercise only, 2) supervised exercise with glenohumeral mobilizations, 3) supervised exercise with a mobilization-with-movement …Following a well-structured conditioning program will also help you return to sports and other recreational activities. Click to view and download this handout. This shoulder rehabilitation program focuses on strengthening the muscles that support your shoulder to help keep your shoulder joint stable, relieve pain and prevent further injury. Bent arm lateral raise: With your elbows bent at 90 degrees, hold your dumbbells in front of you. Use shoulder abduction to rotate your lower arms so the dumbbells are parallel to the floor but still at about shoulder height. These raises work the muscles of your upper back (traps) and the deltoid muscles of your upper arms.To the extent that the cuff musculature is deficient, a greater amount of translation is anticipated, which places additional requirements on the optimal glenoid design to accommodate the increased translation. 85 As is discussed later, probably more important is that the initiation of shoulder abduction results in forces directed toward the ...To be classified as having impingement, subjects had to demonstrate at least 3 of the following: (1) a positive Neer impingement test, (2) a positive Hawkins impingement test, (3) pain with active shoulder elevation, (4) pain with palpation of the rotator cuff tendons, (5) pain with isometric resisted abduction, and (6) pain in the C5 or C6 …Shoulder pain is a common symptom in primary care. It can be due to intrinsic problems like calcific tendonitis but can also be referred from other structures. Try our Symptom Chec...Jul 24, 2020 ... What are the muscles that abduct the shoulder? The shoulder abduction muscles are Supraspinatus, Deltoid, Trapezius, and Serratus Anterior. A ...The range of motion is normal, with positive provocative tests like Hawkins (pain on passive forced internal rotation of the shoulder). The drop arm test is confirmatory. If weakness is present on shoulder abduction, a rotator cuff tear should be suspected (MRI is the best test for diagnosis of rotator cuff tear). Treatment for RCSJun 9, 2023 · When shoulder abduction is performed, a healthy shoulder can move 150 degrees; however, if the rotator cuff, the shoulder’s main muscular support, is injured, this range of motion will be considerably lowered. Shoulder abduction will be hampered by shoulder tendons or muscles that are weakened, inflamed, or torn. This test was designed to assess radicular pain, specially at the C4-C6 nerve roots. It is otherwise known as the shoulder abduction test. This test can be suggestive of cervical[1] nerve involvement, but however isn't diagnostic of it.[2]During shoulder abduction, the scapula external rotation continued from 0° to 120°. The scapular upward rotation in our study was consistent with those reported by Inman 2). The scapula upward rotation was greater after 30°, after the setting phase, which is the incoincidence between the humerus and the scapula movement.Jun 9, 2023 · When shoulder abduction is performed, a healthy shoulder can move 150 degrees; however, if the rotator cuff, the shoulder’s main muscular support, is injured, this range of motion will be considerably lowered. Shoulder abduction will be hampered by shoulder tendons or muscles that are weakened, inflamed, or torn. Shoulder abduction refers to moving the upper arm away from the midline of the body such as when a person raises their arm out to the sides of the body. The muscles used in shoulder abduction ...Instructions: Ask the patient to abduct their shoulder, whilst you simultaneously palpate the inferior pole of the scapula. Assess the degree and smoothness of scapular movement. On average 50-70% of the scapula’s initial movement occurs at the glenohumeral joint.Shoulder Abduction Pillow. A shoulder abduction pillow is an arm sling that offers support after an operation or other type of damage. These shoulder abduction pillows have a cushion that makes it possible to detach the arm from the body without using the shoulder abduction muscles. Shoulder Abduction DegreesMethods. Active range of motion and isometric muscle strength of shoulder abduction and flexion in 0°, 30°, 60°, 90°, and 120° of abduction/flexion as well as internal and external rotation in 0° and 90° of abduction were obtained in 12 healthy volunteers on the dominant arm before and after an ultrasound-guided isolated axillary nerve block.Feb 14, 2020 · A unique joint, the shoulder has only one bony attachment to the rest of the skeleton between the collarbone and the breastbone. This unique anatomy allows a wide range of normal shoulder range of motion (ROM), including abduction, flexion, extension, lateral rotation and medial rotation. Rolyan Abduction Sling Designed to help immobilize the shoulder after surgery or an injury, the Rolyan Abduction Sling gives support as well. ... With a slight shoulder abduction, the air can be exchanged at the... More Info Over 99% Order Accuracy. Checkout. Skip to the end of the images gallery . Skip to ...The human shoulder is the most mobile joint in the body. [ 1] This mobility provides the upper extremity with tremendous range of motion such as adduction, abduction, flexion, extension, internal rotation, external rotation, and 360° circumduction in the sagittal plane. Furthermore, the shoulder allows for scapular protraction, retraction ...Manual Muscle Testing of Shoulder Abduction Testing muscle. Deltoid middle head Supraspinatus. Patient Positioning. the patient should be in a Seated position, shoulder kept in the scapular plane 25 degrees anterior to the frontal plane, thumb directed upward. to assess Grades 0-2 there is no ‘gravity minimal’ posture for this motion ...May 4, 2023 · This condition is almost always the result of damage to one of three nerves that control muscles of the upper back, neck, and shoulder girdle: Long thoracic nerve- controls serratus anterior Spinal accessory nerve - trapezius Dorsal scapular nerve - rhomboid muscles Learn the proper technique to perform a manual muscle test for abduction of the shoulder.Demonstration of shoulder abduction strengthening exercises using resistance bands.One possible cause of tingling in the neck and shoulder is a pinched nerve, according to Denver Back Pain Specialists. When there is a pinched nerve in the neck, pain and tingling ...Shoulder girdle movements. Abduction (protraction): movement of distal clavicle and scapula anteriorly around thorax, with scapula medial border moving away from midline. Adduction (retraction): movement of distal clavicle and scapula posteriorly around thorax, with scapula medial border moving toward midline. Shoulder girdle movements. The shoulder girdle functions as the anchor that attaches the upper limbs to the axial skeleton. Additionally, the shoulder girdle allows for a large range of motion, mainly in the highly mobile …3 Best Abduction Exercises Shoulder (Lateral) Raise. How to: Stand with feet hips-width apart, holding a dumbbell in each hand, arms at your sides and palms facing in.1. Not engaging the core: Before beginning any shoulder abduction exercise, it is important to engage the core muscles to ensure proper form and prevent injury. 2. Allowing the shoulders to round forward: When doing shoulder abduction, it is important to keep the shoulders back and down to ensure proper form and prevent injury. 3. A shoulder sling with an abduction pillow is worn to help the shoulder heal properly after surgery. Watch this video to see how the shoulder sling and abduct...Supraspinatus is commonly thought to be instrumental in the initiation of shoulder abduction. A study in 2011 used electromyography to study the levels of activity in the shoulder muscles during flexion, and found that supraspinatus was consistently recruited prior to movement of the limb at all loads; ...Triffitt et al 15 assessed the reproducibility limits of inclinometric shoulder abduction and external rotation in both symptomatic and asymptomatic subjects. Asymptomatic subjects had a difference ranging from 24 to 33° for all measurements as compared to 24 to 41° in symptomatic subjects, suggesting a greater variance among those with a painful shoulder.In our study, we regarded a shoulder abduction angle of 160° as the upper limit because several participants could not achieve a shoulder abduction angle of 170° or 180°. Second, although the UG measurements were recorded at intervals of 10°, more precise ROM measurements may be required in clinical practice.Subscapularis. Subscapularis is the main internal rotator of the shoulder. It is the largest & strongest cuff muscle, providing 53% of total cuff strength. The upper 60% of the insertion is tendonous and the lower 40% muscle. It is a …The shoulder complex is the connection of the upper arm and the thorax. Comprising numerous ligamentous and muscular structures, composed of the clavicle, scapula, humerus and sternum, and an intricately designed combination of four joints, the Glenohumeral (GH) Joint, the Acromioclavicular (AC) Joint and the Sternoclavicular (SC) Joint, and a ...
Disorders of the shoulder. is the most common cause of shoulder pain. The supraspinatus tendon is most frequently involved and the subscapularis is second. Active abduction in …. Jeremy renner snow plow video
Apr 22, 2021 · The shoulder-abduction angle is often modified during scapular-retraction exercise, especially to produce lower UT/MT and UT/LT ratios. However, how the shoulder-abduction angle affects the activity of the trapezius muscle parts during scapular retraction in a standing position is unknown. The deltoid is a key shoulder stabilizer. This muscle prevents inferior glenohumeral joint displacement while completely adducted and bearing a heavy load, as in deadlift exercises. Additionally, a 2018 study revealed that the deltoid compensates for weak shoulder abduction due to rotator cuff tears by as much as 108.1% of the normal.The shoulder is a complex anatomical structure consisting of four joints. [1] Movements at the shoulder enable us to move and position our arm and hand in space. The muscles …Cooking a 7-pound pork shoulder in the oven takes about four to five hours, and cooking it in a slow cooker takes around 8 to 10 hours. Martha Stewart holds that a pork shoulder sh...Instructions: Ask the patient to abduct their shoulder, whilst you simultaneously palpate the inferior pole of the scapula. Assess the degree and smoothness of scapular movement. On average 50-70% of the scapula’s initial movement occurs at the glenohumeral joint.To the extent that the cuff musculature is deficient, a greater amount of translation is anticipated, which places additional requirements on the optimal glenoid design to accommodate the increased translation. 85 As is discussed later, probably more important is that the initiation of shoulder abduction results in forces directed toward the ...The examination of a patient with a weak shoulder must include the neck and brachial plexus. Placing the head in extension and rotating the chin to the affected side usually exacerbates symptoms of cervical radiculopathy. The neurologic examination tests the cutaneous distribution of the nerve roots from C5 to T1.Slowly and with control return back to the starting. Repeat for 20 reps x 4 sets. Table Slides Shoulder Abduction (Sideways) with Towel. Sitting upright in a good posture with your hand resting on a towel on a table with your thumb pointing upwards. Slowly slide your hand out in a sideways motion as far as comfortable.Disorders of the shoulder. is the most common cause of shoulder pain. The supraspinatus tendon is most frequently involved and the subscapularis is second. Active abduction in …The purpose of this study was to assess the effect of the shoulder abduction angle on shoulder internal impinge- ment and anterior shoulder stability during the ...Description. 01851. Shoulder Abduction Pillow (universal) Sizes: universal Breg s Shoulder Abduction Pillow is a shoulder immobilizer designed for varying degrees of abduction (10°- 75°). When the pillow is inflated, the …"There’s no doubt that the bigger competitor has come back," said CEO Kasper Rorsted. The next few months won’t go as well as Adidas planned. The German label acknowledged as much ....
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Fisker ocean review | the pain started after an injury or accident, like a fall. you develop severe pain in both shoulders. you feel feverish or unwell. These can be signs of something serious, like a broken or dislocated bone, or a torn (ruptured) ligament or tendon. You can call 111 or get help from 111 online.bring the shoulder to 90 degrees of abduction, 90 degrees of external rotation and ask the patient to hold this position. Positive if the arm falls into internal …...
Will tennyson | Background: Previous biomechanical studies regarding deltoid function during glenohumeral abduction have primarily used static testing protocols. Hypotheses: (1) Deltoid forces required for scapular plane abduction increase as simulated rotator cuff tears become larger, and (2) maximal abduction decreases despite increased deltoid forces.#2: Shoulder Abduction (Standing Position) With shoulder abduction, you’re moving in the frontal plane — that is, your motions only move in lateral directions. Abduction is the particular mechanic that allows you to move your arm away from the body, like when you’re lifting your arms up into a rep of jumping jacks.Jul 23, 2020 ... ... shoulder height, pull band back by moving your shoulder back and keeping elbow bent. Next, rotate your arm so that the hand is now pointing ......
Kendo schools near me | While palpating the shoulder, the examiner passively lifts the patient’s arm sequentially into flexion, then abduction, then scaption or brings it backward to assess shoulder extension. The examiner then can assess passive medial and lateral rotation by bringing the patient’s elbow to the side and medially or laterally rotating the arm.Jun 23, 2020 ... The existence of shoulder abduction and finger extension movement capacity shortly after stroke onset is an important prognostic factor, ...The examination of a patient with a weak shoulder must include the neck and brachial plexus. Placing the head in extension and rotating the chin to the affected side usually exacerbates symptoms of cervical radiculopathy. The neurologic examination tests the cutaneous distribution of the nerve roots from C5 to T1....
Where should carbon monoxide alarms be placed | Oct 30, 2023 · Synonyms: Abduction of shoulder joint, Abductio articulationis glenohumeralis The deltoid muscle (acromial part) is the principal abductor of the arm at the glenohumeral joint. However, it can only do so, when the arm is already abducted beyond fifteen degrees. In general terms, abduction, in the anatomical sense, is classified as the motion of a limb or appendage away from the …Traveling during a destination's shoulder season can help you save money and avoid major crowds. See where to go and when to visit to make your vacation shine. We may receive c......
Firebreather cartoon network | Jan 15, 2021 · Learn the proper technique to measure shoulder abduction range of motion using a goniometer. Learn how to diagnose and treat common causes of shoulder pain, such as frozen shoulder, rotator cuff tear, glenohumeral instability and ligamentous laxity. This article …...
Route 53 | Shoulder Abduction Adduction is a close up illustration, showing the movement of the shoulder blades (scapula) when the shoulders and arms move away from the body. When the shoulder blades move away from each other, the action is called abduction (protraction) , and when the shoulder blades move towards each other, the action is …Intrinsic muscles Sources + Show all Anterior axio-appendicular shoulder muscles Anterior shoulder muscles, also called the pectoral muscles, attach the upper …...