Anatomy. The labrum also serves as an attachment point for the long head of the biceps tendon, the glenohumeral ligaments, and the long head of the triceps tendon, forming a periarticular system of fibers that gives the shoulder joint much needed stability. BASIC SHOULDER ANATOMY. taken on the form that is seen in the adult shoulder, except the biceps tendon, which still appeared cord shaped. The shoulder is the most mobile joint in the body and undergoes a lot of wear and tear. CONTINUE SCROLLING FOR RELATED SLIDESHOW. Anatomy of Shoulder Labrum Tears. Glenoid labrum variants Dr Balint Botz and Assoc Prof Frank Gaillard et al. However, in bony terms the 'socket' (the glenoid fossa of the Scapula) is quite shallow and small, covering only a third of the 'ball' (the head of the Humerus). The large bone in the upper arm is called the humerus. The shoulder complex (involving 4 joints, muscles and tendons, ligaments, labrum, capsule, bursa, and neuromuscular bundles), is among the most complicated regions of the body. The large bone in the upper arm is called the humerus. SHOULDER ANATOMY. Hopkins Medicine: "Shoulder Labrum Tear." The shoulder labrum is a thick piece of tissue attached to the rim of the shoulder socket that helps keep the ball of the joint in place. The shoulder is a ball-and-socket joint between the upper arm bone, which is called the humerus, and the shoulder blade, which is called the scapula. Hospital for Special Surgery: "Labral Tears of the Shoulder," "Shoulder Labrum Tears: An Overview," "Shoulder Surgery: Diagnostic Arthroscopy." CONCLUSION. compare the labrum of the hip and shoulder. 3 3 Human Anatomy Department, Faculty of Medicine, University of Zawia, Zawia, Libya. 2 ARTICULATION Articulation is between: • The rounded head of the humerus and • The shallow, pear-shaped glenoid cavity of the scapula. • The glenoid cavity is deepened by the presence of a fibrocartilaginous rim called the glenoid labrum. The term labrum is used in anatomy to designate a lip, edge, or brim. PMID: 29661113 DOI: 10.1177/2309499018770900 Abstract Background: Although the glenoid labrum has an important role in shoulder stability, little is known about its composition, vascularity and innervation. The head of the upper arm bone (humeral head) rests in a shallow socket in the shoulder blade called the glenoid. The glenoid labrum (glenoid ligament) is a fibrocartilaginous rim attached around the margin of the glenoid cavity in the shoulder blade. At full term (40weeks and 370mm CRL), the labrum forms a well defined ring, deepening the concavity of the glenoid fossa. However, in bony terms the 'socket' (the glenoid fossa of the scapula) is quite shallow and small, covering at most only a third of the 'ball' (the head of the humerus). In order to understand how injuries in our shoulder occur, we first have to understand the anatomy. The shoulder joint can be categorized as a ball and socket joint. 4 4 King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia. Labrum: In medicine, a ring of fibrocartilage (fibrous cartilage) around the edge of the articular (joint) surface of a bone. The shoulder consists of the clavicle, scapula, and humeral head. Axial T1 FS: Normal anatomy of the glenohumeral joint and rotator cuff on a MR (Magnetic Resonance) arthrography of the shoulder: MRI of the labrum, tendons of the rotator cuff muscles, glenohumeral ligaments, articular capsule and subacromial-subdeltoid bursa . The purpose of this article is to review frequently encountered pitfalls as they pertain to normal and variant anatomy of the shoulder, including the rotator cuff and rotator cable, blood vessels, glenoid labrum, and the glenohumeral ligaments. We studied the gross, histological, and vascular anatomy of the glenoid labrum in twenty-three fresh-frozen shoulders from cadavera to demonstrate its cross-sectional anatomy, its microvascularity, and its attachments. The extraordinary range of the shoulder is due to the shallow osseous glenohumeral articulation. Shoulder Anatomy This is an axial T1 MRI image at the top of the shoulder. It covers the bones, ligaments, muscles and other structures that make up the shoulder. for more anatomy content please follow us and visit our website: www.anatomynote.com. The shoulder is one of the most sophisticated and complicated joints of the body: It has the greatest range of motion of any joint in the body allowing complete global movement allowing you to position the hand anywhere in space. 2.2a, b and 2.3a, b). There are a number of glenoid labral variants , whose importance is mainly due to the fact that the unwary may misinterpret them as pathology (e.g. The Buford complex is a relatively rare and under-recognised variant of normal shoulder anatomy that affects the antero-superior labrum and the middle glenohumeral ligament (MGHL). All structures look dark because of fat suppression. This injury is common among athletes participating in sports that involve repetitive throwing or overhead motions, such as baseball and volleyball, as well as football. Shoulder Anatomy. However, the socket is not a full cup, it is a shallow depression similar to a golf tee. Our Team Online Consultations ... A firm, rubbery ring of tissue called the labrum is attached to the edge of the glenoid, and the humeral head and glenoid are covered in a smooth, gliding surface called articular cartilage (joint surface). The shoulder is a ball-and-socket joint composed of the upper head of the humerus (ball) and a pocket-shaped bone known as the glenoid (socket). Radiol Clin North Am 2006 ;44(4):479–487, vii. Crossref , Medline , … The coordinated activity of numerous muscles working together in set patterns is required to produce this motion. A labrum tear, also called a SLAP tear, is a tear to the ring of cartilage surrounding your shoulder’s socket. Shoulder Anatomy Learn about the fascinating structures that make up your shoulder. The ball is on the top of the upper arm bone and the socket is on the shoulder blade. The labrum is a piece of rigid cartilage that lines the inside of the shoulder blade, forming the cup of the shoulder socket. Arthritis Foundation: "Shoulder Anatomy." The shoulder is the most flexible joint in the body enabling a wide range of movements including, forward flexion, abduction, adduction, external rotation, internal rotation, and 360-degree circumduction. The Shoulder Joint is considered as a 'ball and socket' joint. The anatomy of the glenohumeral joint in humans is characterized by static and dynamic stabilizing structures. Glenoid cavity. UW Health: "Rehabilitation Guidelines for Anterior Shoulder Reconstruction with Arthroscopic Bankart Repair." It consists of the labrum (a type of fibrocartilage tissue) which supports in forming a suction cup for the humerus (arm bone), thus leading to stability and improved mobility of the joint. Home About Us. The Glenoid Labrum (Glenoid Ligament) is a fibrocartilaginous rim attached around the margin of the Glenoid cavity in the Shoulder Blade. This ball sits in a socket on the end of the scapula. The shoulder complex is made up of three bones, which are connected by muscles, ligaments, and tendons. The shoulder joint is considered a ball and socket joint. The posterior labrum is now more fibrocartilagenous and the whole of the labrumismorevascular. It consists of four joints: sternoclavicular, acromioclavicular, scapulothoracic, and glenohumeral. With this tool, they have been able to identify and treat a shoulder injury called a glenoid labrum tear. Before the use of shoulder arthroscopy and magnetic resonance imaging (MRI) in the diagnosis and management of shoulder problems, glenoid labrum lesions were underappreciated. We are pleased to provide you with the picture named Labrum, Scapula, Rotator Cuff, Deltoid Muscle, Bursa.We hope this picture Labrum, Scapula, Rotator Cuff, Deltoid Muscle, Bursa can help you study and research. Bankart lesion or labral tear ). WebMD's Shoulder Anatomy Page provides an image of the parts of the shoulder and describes its function, shoulder problems, and more. What is the anatomy of the glenoid labrum? Fat suppression is commonly used after contrast is given on MRI to increase the conspicuity of the contrast material as you will see on later images. On first entry to the joint, the biceps tendon must be identified for orientation purposes. Ligaments bind the arm bone to the cup providing static stability. Normal MR imaging anatomy of the rotator cuff tendons, glenoid fossa, labrum, and ligaments of the shoulder. 3 • The articular surfaces are covered by hyaline cartilage. In particular the glenoid labrum (GL), the proximal attachment of the joint capsule and the lateral glenohumeral ligament, is an important passive stabilizer in the human shoulder. It reinforce s and stabilizes the shoulder joint and cushions the bones and ligaments attached to it. In this episode of eOrthopodTV, orthopaedic surgeon Randale C. Sechrest, MD narrates an animated tutorial on the basic anatomy of the shoulder. ANATOMY OF SHOULDER JOINT. This section is a review of basic shoulder anatomy. We use fat suppression with T1 images because for this study we injected contrast into the joint. The top of the humerus is shaped like a ball. Between the meeting point of these bones lies the labrum – a band of fibrocartilaginous tissue that helps to nest the ball of the upper arm bone within the shallow socket formed by the glenoid. General Development The human shoulder joint is conceptually, a simple ball and socket joint although with little congruency. Labrum tears can also result from a traumatic event, like a fall, and with age due to wear and tear. The shoulder complex is made up of three bones, which are connected by muscles, ligaments, and tendons. The shoulder blade is called the scapula and collarbone is called the clavicle. The glenohumeral joint is a ball and socket joint which has sacrificed stability for mobility - stability is provided by a strong capsule, ligaments and surrounding musculature. We want to evaluate the similarities and differences, with special focus on its anatomy, general development, pathology and therapy. Know more about the shoulder anatomy. The shoulder joint has three bones: the shoulder blade (scapula), the collarbone (clavicle), and the upper arm bone (humerus). Some researchers believe it is a ‘normal’ variant, which is found infrequently in shoulders on MRI and routine shoulder arthroscopies. An improved understanding of the surgical anatomy … Anatomy and function of the labrum. The biceps tendon is visualised from the attachment known as the biceps anchor in the supraglenoid tubercle and superior labrum, along the rotator interval as far as the point where it emerges from the shoulder (Figs. Plural: labra. 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