Assistant
Definition
By Gregory R. Waryasz, MD
The costoclavicular 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 inferiorly. It spans from the inferior sterna end of the clavicle to the 1st rib and costal cartilage.
The costoclavicular 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 costoclavicular ligament is to help limit elevation of the pectoral girdle.
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.