Interbody cage hi i ruhroa hman tur hmanrua a ni. Disc chhe tak lakchhuah hnuah vertebrae pahnih inkarah a thu thin. Surgeon-te chuan disc san zawng rawn hruai kir leh nan an hmang thin. Cage hian i ruhro hmalam chu a thlawp a ni. Ruh inkar hmun a ti lian a, chuvangin nerve te hian hmun an nei tam zawk. Cage hian i ruhro chu a S-shape pangngai a vawng reng thei a ni. Ruh te pawh a lo thang khawm a, a fuse bawk. I spinal canal-ah hmun tam zawk i hmu a, chu chuan nerve pressure a tihniam thei a ni.