Total disc replacements have grown over the last two decades, and multiple implants have hit the market.
Here are eight total disc devices to know:
Lumbar disc replacement
Prodisc-L: Prodisc L, from Centinel Spine, is the only device approved in the U.S. for two-level surgery. It has two cobalt chrome alloy endplates and an ultra-high molecular weight polyethylene inlay.
ActivL: Aesculap's implant is designed for degenerative disc disease and uses a mobile ultra high molecular weight polyethylene core. Although the company is no longer marketing its spine products in the U.S., it is exploring other partnerships to bring the technology to physicians and patients.
Cervical disc replacement
Prestige LP: Medtronic's Prestige LP cervical disc has 10-year clinical study data for one- and two-level IDE trials. It is made of proprietary titanium ceramic composite material without nickel, cobalt or chromium.
Prodisc-C: Centinel Spine's Prodisc-C is designed to maintain range of motion and uses the ball and socket concept. It is available in six footprints and three heights.
Secure-C: Globus Medical's Secure-C is designed to allow up to 15 degrees of motion in flexion-extension and up to 10 degrees of motion in lateral bending. It comes with its own instrument for a three-step procedure.
PCM: The PCM disc from NuVasive is indicated for use at one level. Its design includes two cobalt chromium molybdenum alloy metal endplates and an ultra-high molecular weight polyethylene spacer.
M6-C: Orthofix's cervical disc replacement implant has been used in more than 70,000 cases globally. It's the only disc on the market with a shock-absorbing nucleus and fiber annulus that help replicate a controlled range of motion.
Mobi-C: Highridge Medical's Mobi-C disc has been used across 26 countries since 2004 and has shown positive long-term outcomes for one- and two-level replacements. It was first used in France and was approved by the FDA in 2013. Its plates have teeth that help hold the plates to vertebrae with no bone cut out.