Assistant
Definition
By Gregory R. Waryasz, MD
The oblique popliteal ligament of the musculoskeletal system is characterized by being an expansion of the semimembranosus tendon.
It is part of the knee joint. It consists of fibrous dense regular connective tissue of collagen fibers.
Its unique structural feature is that it is intimately related to the semimembranosus tendon. The ligament arises posterior to the medial tibial condyle and passes superolaterally towards the lateral femoral condyle. It blends with the posterior joint capsule.
The oblique popliteal 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 oblique popliteal ligament is to reinforce and tighten the posterior capsule wnhenit is pulled medially and forward. It functions as a posterior stabilizing structure.
Common diseases include ligament tears and sprains. It can be injured in combination with other structures in the knee.
Commonly used diagnostic procedures include clinical history, physical exam, x-ray, and MRI.
It is usually treated with physical therapy, immobilization, and NSAIDs.
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.
Wheeless’s Textbook of Orthopaedics: Oblique Popliteal Ligament (http://www.wheelessonline.com/ortho/oblique_popliteal_ligament)