Theposterior branch of the obturator nerve pierces the anterior part of theobturator externus, and supplies this muscle; it then passes behind theadductor brevis on the front of theadductor magnus, where it divides into numerous muscular branches which are distributed to the adductor magnus and the adductor brevis.^[1]

It usually gives off an articular branch to theknee-joint.

The articular branch for the knee-joint is sometimes absent; it either perforates the lower part of the adductor magnus, or passes through the opening which transmits thefemoral artery, and enters thepopliteal fossa; it then descends upon the popliteal artery, as far as the back part of the knee-joint, where it perforates the oblique popliteal ligament, and is distributed to the synovial membrane. It gives filaments to thepopliteal artery.

This article incorporates text in thepublic domain frompage 954 of the 20th edition ofGray's Anatomy(1918)

• medialthigh at The Anatomy Lesson by Wesley Norman (Georgetown University) (medialthigh3)
• Anatomy photo:12:st-0604 at the SUNY Downstate Medical Center

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