Oblique popliteal ligament
The oblique popliteal ligament is located in the sagittal section of the knee joint. As a fiberous band of tissue, this ligament is both broad and flat in appearance. It derives from the semimembranosus muscle's tendon. Nerves and vessels pass through apertures between the ligament's fascicule. The tibia features the ligament's insertion point, and it connects to the femur. The ligament serves an important, reinforcing function within the knee. It acts as a stabilizing structure for the knee's posterior aspect. This is a function the ligament shares with the arcuate popliteal ligament. If pulled forward or pulled medially, the ligament assists the tightening of the knee's posterior capsule. This can play a role in the need for knee surgery, repair, or rehabilitation. The oblique popliteal ligament is also one of the capsular ligaments. Each member of this grouping works to provide strength to the fibrous capsule. Capsular ligaments also include the quadriceps tendon, the patellar retinacula, and the tibial collateral ligament, among others.
Written and medically reviewed by the Healthline Editorial Team
In Depth: Oblique popliteal ligament