Assistant
Definition
By Gregory R. Waryasz, MD
The posterior sternoclavicular ligament of the musculoskeletal system is characterized by its location and function.
It is part of the sternoclavicular joint. It consists of fibrous dense regular connective tissue of collagen fibers.
Its unique structural feature is that it is located posteriorly over the joint.
The posterior sternoclavicular ligament as well as all other bones, muscles, and ligaments of the body are derived of mesodermal origin in the embryo.
The function of the posterior sternoclavicular ligament is to strengthen the joint capsule and resist dislocation.
Common diseases include ligament tears resulting in dislocation.
Commonly used diagnostic procedures include clinical history, physical exam, x-ray, and MRI.
It is usually treated with physical therapy and NSAIDs. Surgery can be performed when a closed reduction of the dislocation is unsuccessful.
References
Elstrom J, Virkus W, Pankovich (eds), Handbook of Fractures (3rd edition), McGraw Hill, New York, NY, 2006.
Koval K, Zuckerman J (eds), Handbook of Fractures (3rd edition), Lippincott Williams & Wilkins, Philadelphia, PA, 2006.
Lieberman J (ed), AAOS Comprehensive Orthopaedic Review, American Academy of Orthopaedic Surgeons, 2008.
Moore K, Dalley A (eds), Clinically Oriented Anatomy (5th edition), Lippincott Williams & Wilkins, Philadelphia, PA, 2006.