The testicular artery penetrates through the posterior border of the testis to ramify on the inner surface of the tunica albuginea. The artery to the vas deferens supplies this structure and the epididymis before anastomosing freely with the testicular artery and the cremasteric artery. Therefore, ligation of the testicular artery does not necessarily result in testicular atrophy.
Surgical Anatomy. Arch Surg. 1994;129(10):1105. doi:10.1001/archsurg.1994.01420340119026