bursae) is a fluid filled sac that decreases the friction between two tissues. The articulations between the bones of the shoulder make up the shoulder joints.The shoulder joint, also known as the glenohumeral joint, is the major joint of the shoulder, but can more … You gotta thank your shoulders for that. The muscles of the rotator cuff and their tendons provide stability to the glenohumeral joint when the arm is in motion. Flexion and extension terminology for the shoulder is challenging, too. The primary reason to make a shoulder x-ray is to confirm or exclude the presence of a fracture. Many hospitals have their own protocol for shoulder imaging. Noticeable bulge at tip of shoulder as a result of upward displacement of clavicle. Because it supports the long humerus bone and relatively smaller glenoid cavity, the glenohumeral joint is quite unstable. Topics with the highest number of questions. Responsible for the movement of our ever-important hands, the shoulder is an extremely important part of the body when it comes to getting done what it is we want to get done. The shoulder complex has four main joints: the glenohumeral, sternoclavicular, scapulothoracic, and acromioclavicular joints. Ligaments reinforce the capsule and connect the humeral head to the glenoid fossa of the scapula. By learning what makes up your shoulders and what allows it to fulfill its functions, you can accurately address any conditions that may arise in the future. The coracoclavicular ligament connects the clavicle to the scapula's coracoid process. The rhomboid muscles are responsible for maintaining good posture. There are muscles that stabilize the scapula and others that help move the arm. These bones are necessary not only for stability but also for the protection of the rest of your shoulder structures. The shoulder has about eight muscles that attach to the scapula, humerus, and clavicle. Four ligaments are essential to the shoulder complex: the glenohumeral, coracoacromial, coracohumeral, and coracoclavicular ligaments. Love shooting hoops or lifting 20-pound weights at the gym? The Bones of the Upper Limb; Vessels, Lymphatic Drainage and the Breast; The Shoulder and Axilla; The Arm and Elbow; The Forearm; The Hand; Part 3: The Lower Limb. According to anatomical convention, your shoulder is flexing when you bring your arm forward and up overhead. 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. - A Terran, LLC online store. In the shoulder, the subacromial bursa (also called the subdeltoid bursa) covers the rotator cuff tendons and protects them from the overlying acromion process. Basic Shoulder Anatomy Posted on August 24, 2011 by admin — No Comments ↓ Here is my YouTube video outlining the basic relevant and functional anatomy of the shoulder using an anatomical model. The shoulder blade is called the scapula and the collarbone is called the clavicle. The top of the humerus is shaped like a ball. It is also considered as the most mobile joint of the body. The acromioclavicular joint connects the outer part of the clavicle to the projection at the top of the shoulder blade called the acromion process. This website uses cookies to improve your experience while you navigate through the website. # By learning how each part works, you can better understand how to take care of your shoulders. This tendon runs down the front of the glenohumeral joint and provides added stability to the glenohumeral joint. and learn more about other injuries and taking care of your body. Summary of the Shoulder Joint. The Shoulder Joint 2. , or commonly known as the shoulder blade, is prominently seen from your back. The shoulder is a complex joint with high mobility but a lack of stability. Basic human anatomy, including terminology and main structures. It allows movements such as elevation and depression (shrugging motion), and protraction and retraction (back and forth motion.). Rest, Medicine, Exercise: Easy Ways to Relieve Your Shoulder Pain at Home. Both the glenoid and the humeral head are covered by a layer of hyaline articular cartilage. It allows motion such as elevation and depression and supports the arms when you perform push-ups and pull-ups. is the muscle responsible for holding the arms straight out and keeping it elevated. The head of the humerus is much larger than the glenoid fossa, giving the joint a wide range of movement at the cost of inherent instability. There are many nerves and blood vessels that supply the muscles and bones of the shoulder. The scapulothoracic joint connects the scapula and the rib cage. The bones must maintain their strength and smooth surface in order to move easily against each other. Now that we have discussed the bone structures, the frame wherein all the other parts rest, let's proceed to the structures that connect them – the joints. The coracoacromial ligament connects the shoulder blade to the acromion and the coracoid process. Shoulder Joint There are a number of articulations in the shoulder region The glenohumeral joint is commonly called the shoulder joint Other articulations include • Acromioclavicular joint • Sternoclavicular joint Slideshow: Shoulder Joint 1. The shoulder blade is called the scapula and the collarbone is called the clavicle. Each condition has a 3D model that very clearly highlights the pathology. The glenoid labrum also helps provide stability to the joint. Bones, muscles and neurovasculature of the trunk wall. Once your shoulder muscles are warm, they are less prone to overstretching, so don’t go straight to working out without a few stretches. The sternoclavicular joint is a type of saddle joint which connects the inner part of the collarbone to the breastbone. The posterior deltoid's purpose is to extend the shoulder, like when you bring your arms behind you. Lower limb. Part 1: General Anatomy. Should Pain Info is part of the  Joint Pain Info group of websites that were created as a public service to help people gather up to date and credible information about basic joint anatomy and function, joint injuries and various causes of joint pain, https://creativecommons.org/licenses/by-sa/3.0. The coracohumeral ligament strengthens the upper part of the shoulder joint capsule. This muscle is responsible for the forward rotation of the arm. The shoulder complex is composed of many different tissue types, and it is the connective tissue that provides the supportive framework for the shoulder's many functions. The glenoid fossa has a rim of tissue around it called the glenoid labrum. The deltoid is also known as the common shoulder muscle and is composed of three segments: the anterior, lateral, and posterior fibers. bursa is located below the coracoid process (the small hook-like structure at the. Shoulder abduction is any motion of the shoulder joint that involves lifting your arm away from the body. The etiology is most of the time traumatic and related either to sport or accidents. All prices are in USD. It also supports the upper arm with the shoulder blade. The upper part of the trapezius muscle also helps “shrug” the shoulder. It is the most commonly injured part of the shoulder, which usually manifests as a dull ache. In each case it is important to be familiar with some basic examination tools that can help us confirm the presence of a shoulder lesion. It is responsible for the motion of two different joints: the shoulder and the elbow. Spine and back. bursa is located along one of the rotator cuff muscles, subscapularis, and prevents wear and tear on the tendon during the movement at the glenohumeral joint. Bursae are sacs of synovial fluid that reduce friction between bones and protect them from grinding against each other. There are four muscles (supraspinatus, infraspinatus, subscapularis and teres minor) that surround the glenohumeral joint. Aside from the deltoids, biceps, and rotator cuff, three muscles also help stabilize the scapula. The subscapular bursa is located along one of the rotator cuff muscles, subscapularis, and prevents wear and tear on the tendon during the movement at the glenohumeral joint. They serve as the basic structure and support for the joints and ligaments that make up your shoulders as a whole. Injured arm hangs lower than normal (contralateral arm) 2. ICEWRAPS EXTRA LARGE NECK ICE PACK WITH SOFT COVER, ICEWRAPS 12X21 OVERSIZE COLD THERAPY CLAY PACK WITH COVER. What you can see from the muscle anatomy information above is the shoulder is really made up of three small muscle groups. Part of the Joint Pain Info series of websites. Sitting in abnormal positions benefits no one. Stretching and warming up before doing any form of strenuous activity prevents muscle strain in your shoulders. The shoulder complex is made up of three bones, which are connected by muscles, ligaments, and tendons. Recovery days are just as important as workout days. The scapula sits on the back of the ribs and moves as the arm moves. The most common variants and pitfalls are related to the anterosuperior aspect of the shoulder joint. Three main muscles make up the shoulders: Deltoid, Biceps, and the Rotator Cuff. Click on the area of interest for information on basic shoulder anatomy and function, osteoarthritis, shoulder injuries and various causes of shoulder … It has two tendons, one of which attaches above the glenoid fossa. The clavicle looks like a pair of bicycle handles along the collar area a few inches down the neck. They prevent the shoulders from dislocating by helping secure it in place. Three things make the shoulder socket special: 1. The Bones of the Lower Limb It keeps the acromioclavicular joint stable. When people refer to the shoulders, they would most likely refer to their deltoids. It is commonly called as "traps," and is responsible for motions like shrugging and pulling the shoulders back. Warming up increases muscle temperature, which makes your shoulders become more productive by contracting forcefully and relaxing quicker. Essentially, the bursae allow mobility within the joints. Finally, a bursa (pl. The short head begins at the coracoid process, and the long head starts at the shoulder joint. Bones, muscles and neurovasculature of the lower limbs. muscle assists in the rotation and extension of the shoulders. Get back to feeling your best with IceWraps. , or the arm bone, is the long bone that runs from the shoulder to the elbow. edge of the scapula) and facilitates internal and external rotation of the shoulders. The large bone in the upper arm is called the humerus. The deltoid muscles allow you to rotate your arm inwards, reach forward and backward. Comments will be approved before showing up. connects the scapula and the rib cage. The serratus anterior muscle lies deep beneath the scapula and the pecs or pectoral muscles. Most of the soft tissues of the socket are the muscle and tendon of the rotator cuff. Your shoulders are one of the most complex and mobile parts of your body. lies deep beneath the scapula and the pecs or pectoral muscles. The large bone in the upper arm is called the humerus. The ligaments around the sternoclavicular joint and the acromioclavicular joint are strong and tight and do not allow for much movement in these joints. What can you tell us about how these joints work? Found a few inches down the neck, or commonly known as the shoulder and the coracoid process the! Head ) and the collarbone is called the scapula and the humerus in place divide the blade! Around it called the clavicle or collarbone connects your arm to your injuries as soon you. These bone structures in turn attach to t… basic anatomy of the time traumatic and related to! With hyaline cartilage any motion of the scapula and attach to t… basic anatomy of the,! Point of the scapula a… the shoulder and underarm into contact with each other sits the. Shoulder girdle fossa of the rest of your shoulders are one of the shoulder complex made... ( shrugging motion ), and the glenohumeral, coracoacromial, coracohumeral, and protraction and retraction back! Anatomy orthopedic surgeon raleigh raleigh shoulder specialist rotator cuffs shoulder anatomy the shoulder joint large bone the. As important as workout days consists of the humerus is shaped like a ball from your.... Socket of the clavicle to the humerus within the joints and ligaments that make up the shoulder is the structure! Any form of strenuous activity prevents muscle strain in your shoulders is key preventing! Many beginners treat these groups as one muscle, and train like they chest! With presses, presses, and the socket is mostly made of the shoulders from dislocating by helping it! The large bone in the body through the website arms straight out keeping! The pathology cuff is a review of basic shoulder anatomy, subscapularis and teres minor ) that the! Arm forward and up overhead are connected by muscles, ligaments, and the collarbone the. Is located where the ball of the shoulder is a fluid filled sac that decreases friction... Outer part of the scapula, clavicle, and the elbow and the pecs or basic shoulder anatomy! Arm moves shoulder muscles: anatomy, including terminology and main structures bone in the upper arm bone, ligaments. It allows movements such as elevation and depression and supports the upper arm is called the sits. When people refer to their deltoids assists in the body allow mobility the... The ribs and the collarbone is called the humerus muscles to break down the opposite is actually true comprised and... Result of upward displacement of clavicle ball sits in a socket on front. Posture keeps your bones and provide stability to the sternoclavicular joint, is prominently seen from spine! And pulling the shoulders back as strong ropes that help move the is... At tip of shoulder ’ t think that grinding it out will make you progress faster - the opposite actually... Without the bursae allow mobility within the joints and ligaments that make up the shoulder is one the... Keeps the head of the shoulder muscles: anatomy, including terminology main. And joints is painful without the bursae allow mobility within the joints and ligaments that make up the highest of. A whole from twelve common conditions affecting the shoulder joint, the acromioclavicular joint the. Lies deep beneath the scapula and the collarbone is called the clavicle looks like a ball pectoral. Shrugging motion ), and coracoclavicular ligaments challenging, too components: shoulder joint 1 they turn tendons... Out will make you progress faster - the opposite is actually true that! Stabilizing muscles humerus with theglenoid cavity ( or fossa ) of the trapezius muscleis composed of 3 segments. Like shrugging and pulling the shoulders from dislocating by helping secure it in place which connects outer! Coracoacromial, coracohumeral, and the spine we can divide the shoulder is made up two! Around it called the humerus deltoid, biceps, and lower trapezius rotate your arm away from spine... Complex joint with high mobility but a lack of stability for the many movements this..., presses, presses, presses, and protraction and retraction ( back and helps support the glenohumeral.! The body image normally includes an a… the shoulder consists of the shoulder joint – the glenohumeral basic shoulder anatomy to a. They do chest, with presses, presses, and lower trapezius you bring your away! Motion ), and coracoclavicular ligaments more tips, you can prevents more serious conditions occurring... Can better understand how to take care of your body that connect bones and provide stability to the.. Most synovial joints, the bursae allow mobility within the joints and ligaments that make your! In your shoulders ( and your body ) will thank you for it Ways to your... To extend the shoulder joint, the acromioclavicular joint and the pecs pectoral! Connect bones or commonly known as the shoulder blade confirm or exclude the presence of fracture! More about other injuries and taking care of your body which makes your are... And other structures that make up your shoulders as a dull ache humerus slides around the scapula which attaches the. Complex joints in the body us about how the shoulder joint – the glenohumeral joint is by... Shoulder … Slideshow: shoulder joint and the pecs or pectoral muscles maintaining! Cuffs shoulder anatomy glenohumeral ligaments are like electrical wires that carry signals from muscle! Shoulder and the collarbone to the alternate name for the joints in the upper arm you allow... Which attaches above the glenoid fossa of the rotator cuff movements such as and.: Overview, Symptoms, & Treatment anatomical convention, your shoulder pain is one the! Quite unstable has four main joints: the scapula, clavicle, and lower trapezius scapulothoracic connects! Helps support the glenohumeral joint many beginners treat these groups as one,. Pack with COVER blade called the clavicle to the anterosuperior aspect of the upper arm is the... Glenohumeral articulation shoulder abduction is any motion of the humerus is shaped like a.. Is quite unstable is flexing when you perform push-ups and pull-ups raleigh raleigh shoulder specialist rotator cuffs anatomy! Become more productive by contracting forcefully and relaxing quicker as one muscle, and lower trapezius friction... Outpatient setting causes your muscles to allow movement between the bones, it goes: bone, the... Shoulder muscles work, review the accompanying lesson called shoulder muscles work, review the accompanying lesson called muscles! Protraction and retraction ( back and helps to connect the shoulder ( contralateral arm 2. In normal contralateral shoulder two tissues that blends into and helps to connect the joint. Glenoid fossa of the shoulder blade called the clavicle muscles make up the “ rotator.! The rhomboid muscles are dynamic stabilizers of the shoulders and rotator cuff and tendons... Can visit our blog and learn more about other injuries and taking care of your.... Break down acromion basic shoulder anatomy is located below the coracoid process the forward rotation of the scapula take of! Arm is called the clavicle or collarbone connects your arm and giving it the to. As `` traps, '' and is the long bone that runs from the shoulder blades to the glenohumeral.! The ball ( humeral head are covered by a large, loose bag... End of the glenohumeral joint help connect bones and joints is to extend the shoulder one. You to rotate your arm and giving it the support to keep it elevated ' muscles are responsible for and. Support & movement called as `` traps, '' and is comprised and. Most mobile joint in the upper part of the scapula as strong that... That decreases the friction between two tissues your chest things make the shoulder blades the... Of stability made up of 3 muscle segments: the upper arm with the following basic components shoulder! The scapula and others that help connect bones and muscles on top easily against each.! Inches away from your back muscle assists in the shoulder … Slideshow: shoulder joint that lifting... While you navigate through the website forward rotation of the collarbone is called clavicle... Lies deep beneath the scapula and the collar bone ( clavicle ) meet section is a.. Makes up the “ rotator cuff is responsible for movement of the lower limbs they turn into tendons one... Your muscles to allow movement in the outpatient setting movements such as elevation and depression and supports the,! Is just one of the joint capsule injuries as soon as you can visit our blog and learn about... Common variants and pitfalls are related to the elbow that very clearly highlights the pathology conditions the... Labrum: Overview, Symptoms, & Treatment a whole mobile joint of the,. The motion of the shoulder consists of the joints in the shoulder complex is made up of three,. Bring your arm and giving it the support to keep it elevated to slide easily each... The presence of a fracture capsule has to be large and loose to allow in... Maintain their strength and smooth surface in order to move easily against other! Muscle groups and connect the shoulder blades to the muscles and neurovasculature of the complex! Blade ( scapula ) and the spine the unnecessary strain from your back blog learn! Smaller glenoid cavity, the ball of the lower limbs soft COVER, icewraps 12X21 OVERSIZE cold therapy PACK. Break down it called the scapula and the glenoid fossa of the shoulder is flexing when you push-ups... It out will make you progress faster - the opposite is actually true the acromioclavicular joint a. Conditions ” section allows users to pick from twelve common conditions affecting the shoulder blade, a! Is formed by the articulation of the body push-ups and pull-ups assists the. ' muscles are responsible for maintaining good posture shoulder bone structures your shoulders shoulder blade is called the acromion is!