It attaches the cervix to the lateral pelvic wall by its attachment to the Obturator fascia of the Obturator internus muscle, and is continuous externally with the fibrous tissue that surrounds the pelvic blood vessels. It thus provides support to the uterus.
It may be of clinical significance in hysterectomy, due to its close proximity to the ureters, which can get damaged during ligation of the ligament.
^Kato T, Murakami G, Yabuki Y (2003). "A new perspective on nerve-sparing radical hysterectomy: nerve topography and over-preservation of the cardinal ligament.". Jpn J Clin Oncol33 (11): 589–91. doi:10.1093/jjco/hyg107. PMID14711985.