Assistant
Definition
By Gregory R. Waryasz, MD
The transverse acetabular ligament of the musculoskeletal system is characterized by its being an extension of the acetabular labrum without any cartilage cells in it.
It is part of the hip joint. It consists of fibrous dense regular connective tissue of collagen fibers.
Its unique structural feature is that spans the inferior acetabular notch. It connects the anteroinferior and posteroinferior horns of the semilunar surface of the acetabulum. The transverse acetabular ligament is a continuation of the labrum, but does not have the cartilage cells in it that the labrum does.
The transverse acetabula 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 transverse acetabular ligament is less important than the acetabular labrum, but many help to resist anteroposterior widening during stresses on the hip joint.
Common diseases include ligament tears, but many not be clinically relevant.
Commonly used diagnostic procedures include clinical history, physical exam, and MRI.
It is usually treated with physical therapy and NSAIDs. Surgery can be performed either with a large open incision or performed with arthroscopy.
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.