Oblique Popliteal Ligament
(Redirected from Posterior oblique ligament)
Description
Name
- Oblique Popliteal Ligament (OPL)
- Posterior Ligament
- Posterior Oblique Ligament
General
- Broad, flat, fibrous ligament on the posterior knee
- Considered an extension of the semimembranosus muscle
- Attaches to the intercondylar fossa and lateral condyle of the femur[3]
- Reinforces the posterior central portion of the knee joint capsule
- One of the five key components of the posteromedial corner
Gross Anatomy
- Broad and flat following a diagonal course approximately 30 degrees to the knee joint
- Medial insertions
- Lateral expansion of the semimembranosus muscle
- Posterior margin of the posteromedial tibia
- Posteromedial joint capsule
- Capsular arm of the posterior oblique ligament
- Lateral insertions
- Meniscofemoral portion of the joint capsule
- Fabella, if present
- Lateral head of gastrocnemius
- Plantaris
- Has a large opening for neurovascular bundle
Anatomic Relations
- Forms part of the floor of the popliteal fossa
- The popliteal artery lies upon the ligament
- Pierces by the posterior division of the obturator nerve, middle genicular nerve, artery and vein
Function
- Prevents hyperextension in the knee
- May also help resist excessive external rotation[4]
Clinical Significance
- Needs to be updated
See Also
References
- ↑ Case courtesy of Frank Gaillard, Radiopaedia.org, rID: 9330
- ↑ Image courtesy of elsevier.com
- ↑ Palastanga, Nigel; Soames, Roger (2012). Anatomy and Human Movement: Structure and Function. Physiotherapy Essentials (6th ed.). Edinburgh: Churchill Livingstone/Elsevier. p. 307
- ↑ Wu X, Yu J, Zou T et al. Anatomical Characteristics and Biomechanical Properties of the Oblique Popliteal Ligament. Sci Rep. 2017;7(1):42698