Aery piercing the oblique popliteal ligament of knee -
Middle genicular Oblique popliteal ligament is an expansion from the tendon of semimembranosus attachment to intercondylar line of femur. It is closely related to popliteal aery and is pierced by middle genicular vessels and nerve and the terminal pa of the posterior division of the obturator nerve.
Superior genicular
Inferior genicular
Middle genicular
Popliteal