Wiktionary
cruciate ligament
n. Any of the pairs of ligaments arranged like a letter X in various joints of the body, such as the knee.
Wikipedia
Cruciate ligament
Cruciate ligaments (also cruciform ligaments) are pairs of ligaments arranged like a letter X. They occur in several joints of the body, such as the knee. In a fashion similar to the cords in a toy Jacob's ladder, the crossed ligaments stabilize the joint while allowing a very large range of motion.
Usage examples of "cruciate ligament".
I was about to look for Danny when he limped around a corner, carrying a stack of towels, his right knee in a bright red sports brace from a soccer injury that had necessitated a reconstruction of his anterior cruciate ligament.