Exposure of the posteromedial aspect of the joint capsule, including the oblique popliteal ligament
, is enhanced by lateral retraction of the medial head of the gastrocnemius muscle following its detachment from the posterior medial condyle of the femur.
Type-1: Supra condylar ridge and oblique popliteal ligament.
The upper head originated from the lateral supracondylar ridge and oblique popliteal ligament, a little above the origin of lateral head of gastrocnemius (Type 1 origin).
The right plantaris originated by two fleshy bellies, the upper one from the oblique popliteal ligament and the lower one from the lower part of the posterior surface of the lateral condyle of femur, medial to the origin of the lateral head of gastrocnemius.
Normally, plantaris originates from the inferior part of the lateral supracondylar line of femur and oblique popliteal ligament. (5) In the present study 23.26% of plantaris had this pattern of origin.
The fabella is situated at the endpoint of the oblique popliteal ligament and the lateral gastrocnemius tendon and is connected with the
Anteriorly the fabella is bordered by the posterior capsule of the knee joint and posteriorly it is situated at the endpoint of the oblique popliteal ligament and the lateral gastrocnemius tendon .
Posterior to the cruciate ligaments is the oblique popliteal ligament. Laterally, a prolongation from the iliotibial band fills in the interval between the oblique popliteal and the fibular collateral ligaments, and partly covers the latter.
The oblique popliteal ligament forms part of the floor of the popliteal fossa, and the popliteal artery rests upon it.
The muscle originates from the lower part of the lateral supracondylar line and the oblique popliteal ligament
Oblique Popliteal Ligament
(Posterior Oblique Ligament): It is best seen on coronal and axial images.