=====Foraminal ligament=====
The  inverted Y ligament detected in a study was different from the other reported descriptions of foraminal ligaments. It divided the [[lumbar foramen]] into three passages. Because of its relations with adjacent structures, such as nerves and vessels, the inverted Y ligament may be an important structure for lumbar foramen. Thus, it may be an important anatomic landmark
((Caglar Y YS, Dolgun H, Ugur HC, Kahilogullari G, Tekdemir I, Elhan A. A
ligament in the lumbar foramina: inverted Y ligament: an anatomic report. Spine
(Phila Pa 1976). 2004 Jul 15;29(14):1504-7. PubMed PMID: 15247570.)).