Latest research substantiate a model on the tunica albuginea on the CC being a bi-layered structure which has a 360° full internal circular layer and a 300° incomplete outer longitudinal coat spanning from the bulbospongiosus and ischiocavernosus proximally, and extending continually into the distal ligament within the glans penis [6]. https://www.sgvascularctr.com/understanding-venous-leak-treatment-in-singapore/