The shoulder joint (or glenohumeral joint from Greek glene, eyeball, + -oid, 'form of', + Latin humerus, shoulder) is structurally classified as a synovial ball and socket joint and functionally as a diarthrosis and multiaxial joint. Richard Drake, A. Wayne Vogl, Adam Mitchell. The stretching of the ligaments of the shoulder joint does not present difficulties in the treatment. This is useful information, as the specific location of pain around body structures helps doctors and other health care providers to figure out what the cause of the patient’s pain is. The shoulder joint ligaments shown are the acromioclavicular ligament, coracoacromial ligament, coracohumeral ligament, coracoclavicular ligament, and the articular capsule or glenohumeral ligaments.. Boney structures shown are the Coracoid process of … • Schlemm’s Ligaments o Situated at lower part of the joint o Passes from under edge of glenoid cavity o Attached to under part of neck of humerus • Glenohumeral Ligaments o Situated at upper part of the joints, projects into its interior (can only be seen when capsule is open). Shoulder stability is dependent on many factors that can be separated into two categories: active and passive. The coracohumeral, glenohumeral ligaments and the tendons of the supraspinatus and subscapularis muscles all serve to support and strengthen the joint. They connect bone to bone, give your joints support, and limit their movement. 1.6k Views. Browse 500 sets of ligaments shoulder joints flashcards. A collection of free medical student quizzes to put your medical and surgical knowledge to the test! no reviews 0 reviews. Shoulder ligaments are fibrous bands that hold the bones of the region together and stabilize the shoulder joints. joint capsule. A serious complication of shoulder dislocation is axillary nerve injury. A joint consists of bones, muscles, ligaments, cartilage and a lubricating fluid all enclosed by a tough joint capsule. A ligament is a band of fibrous connective tissue that joins two bones forming a joint. Origin: the medial edge of the glenoid fossa, Insertion: the lesser tubercle of the humerus, Origin: the lower edge of the glenoid fossa, Insertion: the anatomical neck of the humerus. Impingement syndrome typically presents with pain, weakness and restricted shoulder movement. This is an online quiz called Shoulder Ligaments. A comprehensive collection of clinical examination OSCE guides that include step-by-step images of key steps, video demonstrations and PDF mark schemes. The Scapulothoracic joint is also known as a "physiological" joint because it has a functional movement but there is no biological bone to bone contact.. its an articulation between the subscapular fossa of the scapula and the thoracic wall This results in … They act to stabilise the anterior aspect of the joint.By TeachMeSeries Ltd (2020) Fig 1.2 – The ligaments of the shoulder joint. Anatomy terms allow us to describe the body and body motions more precisely. Created by. They help hold the shoulder in place and keep it from dislocating License [. Figure 7.3 Glenohumeral Joint The glenohumeral (shoulder) joint is a ball-and-socket joint that provides the widest range of motions. The shoulder joint is an example of a ball and socket joint, which is highly mobile due to the minimal contact between its two articulation points, allowing for a wide range of movement. The most notable and clinically important are the rotator cuff muscles. the shoulder joint to the greater tubercle. Pain experienced between 60-120° of shoulder abduction (known as a ‘painful arc’). A collection of anatomy notes covering the key anatomy concepts that medical students need to learn. As a result, the clavicle can be displaced (moved) upwards. Ligamentous laxity occurs when your ligaments are too loose. Thus, you will protect yourself from relapses of articular pathology. The shoulder joint is the most mobile joint in the body. There are a number of muscles that act to move the shoulder joint. In addition to the muscular insertion, ligaments in both the cranial and the ventral regions reinforce the capsule. Due to the very loose joint capsule that gives a limited interface of the humerus and scapula, it is the most mobile joint of the human body. It involves articulation between the glenoid cavity of the scapula and the head of the humerus. Origin: the anterior border of the clavicle, acromion and spine of the scapula, Insertion: the deltoid tuberosity of the humerus, Function: abduction, flexion and extension of the shoulder, Vascular supply: posterior circumflex humeral artery, Origin: the posterior aspect of the inferior angle of the scapula, Insertion: the intertubercular sulcus of the humerus, Function: internal rotation and adduction of the shoulder, Vascular supply: subscapular and circumflex scapular artery. Both of these bands function to strengthen the upper joint capsule. This muscle works in combination with pectoralis minor which lies underneath it. Mild pain and swelling may interfere with normal daily activities, such as putting on a coat. The Shoulder Joint By : Gan Quan Fu, PT, MSc. When the arm is raised, the subacromial space narrows, which can result in impingement of the supraspinatus muscle tendon leading to an inflammatory response. • The joint is sensitive to pain, pressure, excessive traction, and distension. (Netter, 2010) References:Dutton,M. Classes. The coracoacromial ligament is clinically important as it prevents superior dislocation of the humeral head of the shoulder joint. Here we will look closer at shoulder anatomy, focusing on the ligaments and joint capsule. The scapula, humerus, and the clavicle are the three bones that form the shoulder joint. Tears in the AC ligament and the nearby coracoclavicular ligaments, which connect the shoulder blade to the clavicle, cause the collarbone to dislocate. Several ligaments make up parts of the joint capsule, and these ligaments are important in keeping the shoulder joint in proper position. Follow. The axillary nerve runs along the surgical neck of the humerus. Content • Introduction • Glenoid Cavity • Ligaments Surrounding the joint • Bursae in Relation to the Shoulder Joint • Muscles Acting on Shoulder Joint • Blood and Nerve Supply • Joint Movement • Close and Loose Pack Position • Applied Anatomy 1. It has a loose articular capsule and is supported by ligaments and the rotator cuff muscles. Table 1. It provides articulation between the glenoid fossa of the scapula and the head of the humerus. Users Options. Log in Sign up. This condition is commonly known as a shoulder separation. Test. Stability is provided mainly by ligaments, tendons and muscles; the bones and capsule are of secondary importance. The shoulder joint is formed by the articulation of a large round head of the humerus with the relatively shallow glenoid cavity of the scapula. There are five main ligaments within the shoulder complex. A comprehensive collection of OSCE guides to common clinical procedures, including step-by-step images of key steps, video demonstrations and PDF mark schemes. Log in Sign up. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Below is a brief overview of which muscles are involved in specific shoulder movements. There is forward and back tilt, gliding movement across the back and rotation across the back. Their job is to stabilise the shoulder joint. They are the superior, middle and inferior glenohumeral ligaments. rreed1963. Table showing muscles of the shoulder joint and the movements that they produce. 4 Name the factors that provide stability to the shoulder joint. Glenohumeral Ligament – Three ligaments attaching the lesser tubercle of the humerus to lateral scapula- It most commonly occurs in males aged 16-20 years old. Spell. It is also the most commonly fractured bone in the body. It is an inflammation of the shoulder joint capsule, which contains the shoulder ligaments. Their main function is to stabilise the shoulder joint and allow its excessive range of motion. Injury to this nerve causes paralysis of the deltoid muscle and loss of sensation over the ‘regimental badge’ area. Log in, The joint cavity is surrounded by a loose fitting fibrous. Click on the tags below to find other quizzes on the same subject. Deltoid muscle. Flashcards. The shoulder joint includes the following ligaments: Glenohumeral ligaments (x3) As a consequence the shoulder joint is highly mobile, where stability takes second place to mobility, as is evident from the shape of the osseous structures: a large humeral head lying on an almost flat scapular surface. If you feel your dog is in pain in the shoulder area, it is best to consult your veterinarian to get an accurate diagnosis and mode of treatment. The shoulder joint 1. This quiz has tags. Joint capsule is strengthened by multiple ligaments and tendons of shoulder joint. coracohumeral ligament. License Image The shoulder joint ligaments shown are the acromioclavicular ligament, coracoacromial ligament, coracohumeral ligament, coracoclavicular ligament, and the articular capsule or glenohumeral ligaments. Only $2.99/month. This extra mobility does, however, come at the expense of joint stability. 5 Name the movements possible at shoulder joint and the muscles responsible for them. In a Grade 3 sprain, the AC joint becomes completely separated. A joint capsule is a watertight sac that surrounds a joint. Ligaments. This joint is formed from the combination of the humeral head and the glenoid fossa of the scapula. Insertion: the bicipital groove of the humerus, Function: flexion, adduction and internal rotation of the humerus, Innervation: lateral and medial pectoral nerve, Vascular supply: pectoral branch of the thoracoacromial trunk, Origin: lower thoracic vertebrae (T8-12), lumbar vertebrae, ribs 9-12, iliac crest, Insertion: the intertubercular sulcus of humerus, Function: extension, adduction and internal rotation of the humerus, Vascular supply: thoracodorsal branch of the subscapular artery. Types of ligaments and joints. Most people have naturally tight ligaments. LIGAMENTS of SHOULDER JOINT Coracohumeral ligament - attaches the coracoid process to the anterior region of the greater tubercle of the humerus Transverse humeral ligament – covers the intertubercular groove. When the humerus undergoes internal rotation the ligament shortens. Ligaments of the Shoulder Joint. This leads to bruising, pain, and swellin… It is attached medially to the margins of the glenoid cavity beyond the glenoid labrum. Ligaments are bands of tough elastic tissue around your joints. The Sternoclavicular joint is the articulation between the sternum and the clavicle. The bursae located in the shoulder joint include: The subacromial bursa lies between the joint capsule and the acromion of the scapula. Shoulder reconstruction is a surgical procedure performed in patients with shoulder instability to improve stability, restore the function and prevent recurrent dislocations of the shoulder joint. The fibers of the coracohumeral ligament are arranged in a helical fashion so that they unwind and lengthen during external rotation of the humerus. Gravity. Patients with impingement syndrome often complain of pain when their arms are raised (this is particularly common in mechanics and manual labourers who work with their arms overhead). 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