An artificial intervertebral disc for implantation between two adjacent vertebrae includes an outer casing, an inner casing contained within the outer casing, and a resilient nucleus contained within the inner casing. The inner and outer casings are formed, respectively, by two interlocking members. The resilient nucleus is biased against the two members forming the inner casing, thereby elastically separating same. The artificial disc includes various resistance means for restricting and limiting the range of rotational and translational motion between