It is one of four joints that compose the shoulder complex. The anatomy of the sternoclavicular joint is rather complex being composed of incongruent joint facets with an intervening intraarticular disc and with many surrounding ligaments and entheses, which may be involved in seronegative arthritis. It is the only connection between the upper extremity sc joint dislocations are rare 3% of. Anatomy and biomechanics of the sternoclavicular joint. This video covers the anatomy, location and movements of the sternoclavicular joint, which connects the upper limb to the trunk.
The scj is the only bony connection between upper limb and the axial skeleton. Anatomy, shoulder and upper limb, shoulder statpearls. The joint is well supported by its ligaments and the overall range of motion is fairly limited. The sc joint is generally classified as a plane style synovial joint, and has a fibrocartilage joint disk. It is classified as a double arthrodial synovial joint, and is reported to have little intrinsic stability. Youve also got the first costal cartilage that is involved in this joint. Dr whitaker is also the coauthor of the top selling book instant anatomy. The sternoclavicular joint scj is the only true articulation between the upper extremity and axial skeleton. The joint can be palpated during a shoulder examination. The sc joint links the bones of the arms and shoulder to the vertical skeleton. A patients guide to sternoclavicular joint problems introduction. A fibrocartilaginous disk provides further cushioning and stability for this joint, which is surrounded by a strong series of ligaments. From grays anatomy, 40th edn, chapter 46, standring s. It gets its name from the shape as it has a concave surface in one direction and convex in another, like a.
Quizlet flashcards, activities and games help you improve your grades. Because the articular surface of the medial clavicle is highly incongruent with the manubrium, joint stability is maintained primarily by strong ligamentous attachments. The sternoclavicular joint sc joint is formed from the articulation of the medial aspect of the clavicle and the manubrium of the sternum. The incidence of injury is low, and injuries tend to occur due to motorvehicle. It gets its name from the shape as it has a concave surface in one direction and convex in another, like a saddle. It is structurally classed as a synovial saddle joint and functionally classed as a diarthrosis and multiaxial joint. An articular disk that is located within the joint capsule can be attributed for the extra range of motion. The sternoclavicular sc joint is one of the four joints that complete the shoulder. The sc joint is a diarthrodial joint lined with synovium that primarily functions to connect the shoulder girdle to the axial skeleton fig. The sternoclavicular joint is a synovial saddle joint and is the only joint that connects the upper limb to the axial skeleton. This book is distributed under the terms of the creative commons attribution.
The sternoclavicular joint is a diarthrodial synovial joint, which represents the only true articulation between the upper extremity and the axial skeleton. Sternoclavicular joint injury in emergency medicine. Internal jugular vein from angle of jaw to sternoclavicular joint used. These cards cover the joints lectured on in the unit 2 material for mr. It is important to understand that the sternoclavicular joint is a saddle joint. Buy instant anatomy 4th revised edition by robert h. Six case reports are presented to illustrate causative mechanisms. Sternoclavicular joint 3d anatomy atlas anatomyzone. A lecture course in clinically applied topographical anatomy covering all areas of the human body and embryology. The sternoclavicular sc joint is important because it helps support the shoulder. Instant anatomy upper limb muscles clavicle instant anatomy upper. Quiz yourself on the bones of the ventral trunk on. The sternoclavicular joint is a diarthrodial joint composed of the large medial end of the clavicle, the sternum, and the first rib.
He also teaches clinically applied anatomy to surgical, radiological and other speciality trainees and is a former examiner for the mrcs at the english and edinburgh colleges of surgeons. Review article disorders of the sternoclavicular joint. It may occur in a contact sport when a players shoulder hits the ground and another player lands on top of the other shoulder. Describe the most common abnormalities of the sternum and sternoclavicular joints. The acromioclavicular joint is a plane type synovial joint. Movement at the joint can occur passively in three planes, and is usually produced by transmission of movements of the. The sternoclavicular joint is this joint here between the proximal end of the clavicle and the manubrium of the sternum. Surface anatomy of spinal root of xl in posterior triangle. The scj is a saddletype joint that provides free movement of the clavicle in nearly all planes. However, certain types of injuries require immediate medical attention. Instant anatomy upper limb areasorgans arm anterior cross section instant. If you would like a large, unwatermarked image for your web page or blog, please purchase the appropriate license. It is the joint with the least bony congruency in the body yet it is extremely stable thanks to a strong stabilising softtissue envelope of ligaments, muscles and tendons. Surface anatomy of the head, neck and trunk instant anatomy.
Instant anatomy upper limb joints sternoclavicular. It is composed of two portions separated by an articular disc of fibrocartilage. The sternoclavicular sc joint is a point of articulation between the upper extremity and the axial skeleton. The joint surfaces are relatively flat and extremely incongruous, with little inherent bony stability. The sternoclavicular sc joint is a saddleshaped, synovial joint that serves as the. Sternoclavicular joint anatomy and pathology springerlink. In this lesson, learn about the treatment and recovery time of. Signs and symptoms of a sternoclavicular joint sprain. Disorders of the sternoclavicular sc joint are becoming increasingly recognized as significant contributors to shoulder dysfunction in many patients, especially after a traumatic injury. External jugular vein from angle of jaw to mid clavicle. Dislocations of the sternoclavicular joint springerlink. Open resection arthroplasty of the sternoclavicular sc joint has historically provided good longterm results in patients with symptomatic osteoarthritis of the sc joint.
This basic anatomy tutorial covers the ligaments and movements that occur at the sternoclavicular joint. The joint is formed by the sternal end of the clavicle, the clavicular notch of the manubrium and the cartilage of the first rib 24. A freely moveable synovial joint links the upper extremity to the torso, with the sternoclavicular joint scj participating in all movements of the upper extremity. Arthroscopic sternoclavicular joint resection arthroplasty.
Dislocations of the sternoclavicular joint are uncommon, with the posterior variety having a potential for considerable morbidity. You may not embed one of our images on your web page without a link back to our site. The sternoclavicular joint represents the only true articulation between the shoulder and the axial skeleton. The sternoclavicular joint or sternoclavicular articulation is the joint between the manubrium of the sternum and the clavicle bone. The sternoclavicular joint is what is known as a saddle joint, which allows movement in two different directions. It takes all strain off the joint, transmitting stress from clavicle to first costal cartilage. Anatomy, shoulder and upper limb, sternoclavicular joint. Imaging appearances of the sternum and sternoclavicular. Sternoclavicular joint radiology reference article. I started using this book when we started the head and neck section in my anatomy class and i was hooked. Gross anatomy exam 2 joints study guide by drmatt20 includes 33 questions covering vocabulary, terms and more. This enables the clavicle to move backward and forward and to lift up and down. The sc joint is made up of the medial end of the clavicle, the manubrium and an articular disc inbetween.
Sternoclavicular joint anatomy the sternal extremity of the clavicle and the manubrium of the sternum join together to create the sternoclavicular joint. In addition, the sternoclavicular ligament, interclavicular ligament, costoclavicular ligament, and intraarticular disk are shown fig. The joint is located in the spot where the clavicle collarbone meets the sternum breastbone at the base of the neck. A sternoclavicular joint separation most commonly occurs when there is a direct blow to the sternum or a fall onto the shoulder or outstretched hands that causes a force along the length of the collarbone. However, the procedure is rarely performed because of the risk of injury to vital. Patients with this condition typically experience a sudden onset of pain at the time of injury, at the top of the chest, just below the neck and slightly to one side of the midline. It is located where the lateral end of the clavicle articulates with the acromion of the scapula. The bone areas entering into its formation are the sternal. Ideal for use alongside a core anatomy textbook, instant anatomy is the perfect quick reference guide for medical students, surgeons, radiologists and those in. Recognize the variants of normal sternal anatomy and their clinical significance. Explore and learn about the sternoclavicular joint with our 3d interactive anatomy atlas. Sternoclavicular sc joint disorders orthoinfo aaos. Motor vehicle accidents and athleac injuries account for 80% of injuries to this joint. The articular surface of the medial clavicle is much larger than the sternal joint surface, leaving the sternoclavicular joint with less than 50% congruity between its bony components.
Anatomy of the sternoclavicular joint the sternoclavicular joint is a true diarthrodial joint, which forms the only synovial articulation between the upper limb and the axial skeleton. A sternoclavicular dislocation is an injury that causes the bones of the sternoclavicular joint to move from their normal positions. Gross anatomy there are two noncongruent articular surfaces forming a sadd. Despite the increased interest, a thorough understanding of the anatomy and biomechanics of the sc joint is required for safe and efficient surgical treatment. Sternoclavicular injury in sports what impact does sc injury have on athleac funcon.
Anatomy of the sternoclavicular joints, viewed from the anterior aspect with the left joint intact and the right joint in coronal section. Radiologic management and diagnosis can be difficult. Instant anatomy the book instant anatomy podcasts instant anatomy. Clavicle and sternoclavicular joint right clavicle and. Instructions instant anatomy pages 1 16 text version. Imaging appearances of the sternum and sternoclavicular joints 1 learning objectives for test 5 after reading this article and taking the test, the reader will be able to. Sternoclavicular joint problems orthopedic surgery.
Sternoclavicular joint injuries are graded into three categories. Pathologies of the sternoclavicular joint reported in the medical literature are infrequent and mostly include either cases of retrosternal dislocation or cases of infectious haematogenic arthritis by uncommon agents brucellosis, syphilis, in chronic recurrent multifocal osteomyelitis crmo or in the saphosyndrome synovitis, acne, pustulosis, hyperostosis. Instant anatomy upper limb nerves skin specific brachial plexus. While technically a gliding joint, this joint enjoys a wider than normal range of motion. This is the most common type of sternoclavicular joint injury. Anatomy of the sternoclavicular joint the sternoclavicular joint is a diarthrodial saddle joint formed by the sternal end of the clavicle, the clavicular notch of the manubrium and the cartilage of the first rib. The sternoclavicular joint is a synovial joint between the medial clavicle, manubrium and the first costal cartilage that joins the upper limb with the axial skeleton. Instant anatomy is a specialised web site for you to learn all about human anatomy of the body with diagrams, podcasts and revision questions. The medial clavicle is cut to demonstrate the bony anatomy of the medial. Anatomy, shoulder and upper limb, sternoclavicular joint ncbi. What are the long term effects of proper management of grade iii sc joint sprains re.
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