As a rule, surgery may be considered if the symptoms have not settled after about six weeks or so. At Apollo Hospitals, the spine surgeons may opt for: Keyhole surgery - Also known as microdiscectomy spine surgery, it is typically performed when there is a prolapsed disc in the lumbar (lower back) region which is pressing against a nerve. Disc replacement - An artificial disc is a device that is implanted into the spine to imitate the functions of a normal disc (carry load and allow motion). Artificial discs are usually made of metal or plastic-like (biopolymer) materials, or a combination of the two. The disc replacement for prolapsed disc is done in the cervical ( neck) spine.