00:00 / 00:00
Anatomy of the arm
Anatomy of the axilla
Anatomy of the brachial plexus
Anatomy of the elbow joint
Anatomy of the glenohumeral joint
Anatomy of the pectoral and scapular regions
Anatomy of the radioulnar joints
Anatomy of the sternoclavicular and acromioclavicular joints
Bones of the upper limb
Fascia, vessels and nerves of the upper limb
Joints of the wrist and hand
Muscles of the forearm
Muscles of the hand
Vessels and nerves of the forearm
Vessels and nerves of the hand
Anatomy clinical correlates: Arm, elbow and forearm
Anatomy clinical correlates: Axilla
Anatomy clinical correlates: Clavicle and shoulder
Anatomy clinical correlates: Median, ulnar and radial nerves
Anatomy clinical correlates: Wrist and hand
Joints are structures in which bones meet to either permit movement, or provide stability.
There are plenty of them in our upper limbs.
We’ve got the:sternoclavicular; the acromioclavicular; and the glenohumeral joints in the pectoral girdle; the elbow; the proximal and distal radioulnar joints in the forearm; the wrist joint; and the joints of the hand, which include the carpometacarpal, the intermetacarpal, the metacarpophalangeal, and interphalangeal joints.
So let’s get acquainted with the first two of these joints!
First up, there’s the sternoclavicular joint, which is the only bony articulation attaching the upper limb to the axial skeleton.
It involves the clavicular notch of the manubrium, the medial end of the clavicle, and a small part of the first costal cartilage.
It is a saddle synovial type of joint, named so because the manubrial articulating surface is concave and the clavicular articulating surface is convex, so they fit together the same way that a cowboy sits on his horse’s saddle.
The joint has an articular disc that is firmly attached to the anterior and posterior fibrous joint capsule by the anterior and posterior sternoclavicular ligaments, as well as the interclavicular ligament.
Like any other synovial joint, the articular surfaces of the sternoclavicular joint are covered by the fibrous joint’s capsule which has 4 ligamentous thickenings, simply called ligaments, lined internally by a thin layer of synovial membrane.
Latest on COVID-19
Nurse Practitioner (NP)
Physician Assistant (PA)
Create custom content
Raise the Line Podcast
Copyright © 2024 Elsevier, its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Cookies are used by this site.
Terms and Conditions
USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME). COMLEX-USA® is a registered trademark of The National Board of Osteopathic Medical Examiners, Inc. NCLEX-RN® is a registered trademark of the National Council of State Boards of Nursing, Inc. Test names and other trademarks are the property of the respective trademark holders. None of the trademark holders are endorsed by nor affiliated with Osmosis or this website.