Definition

By Gregory R. Waryasz, MD

The ulnotriquetral ligament of the musculoskeletal system is characterized by its location and function.

It is part of the wrist joint. It consists of fibrous dense regular connective tissue of collagen fibers.

Its unique structural feature is that it spans from the volar radioulnar ligament to the triquetrum

The ulnotriquetral ligament of the wrist as well as all other bones, muscles, and ligaments of the body are derived of mesodermal origin in the embryo.

The function of the ulnotriquetral ligament is to provide support to the wrist.

Common diseases include ligament tears, dislocation, and fractures.

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 if there is significant laxity in the wrist or with a fracture that is unstable.

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.