The pubic tubercle is a prominent forward-projecting tubercle on the upper border of the medial portion of the superior ramus of the pubis. The inguinal ligament attaches to it.The pubic spine is a rough ridge that extend from the pubic tubercle to the upper border of pubic symphysis.
Atlas image: abdo_wall65 at the University of Michigan Health System - "The Coverings of the Inguinal Canal, External & Internal Oblique & Transversus Abdominis Removed"