A new prosthetic disc nucleus (PDN) device is intended to treat lower back pain in patients with larger disc spaces.

A new prosthetic disc nucleus (PDN) device is intended to treat lower back pain in patients with larger disc spaces.

The single-unit implant is designed for the treatment of low-back pain that has not responded to conservative therapy and as an alternative to more-invasive spine surgery procedures such as spinal fusion and total disc replacement. Called PDN-Solo XL, the implant is the product of Raymedica, Inc. (Minneapolis, MN, USA). Once implanted, the device begins to absorb fluid from the body, expanding both vertically and horizontally to relieve pain and maintain or increase disc height, thus restoring normal biomechanics. To date, about 1,700 people worldwide have received other PDN implants, states Raymedica. The XL model contains the same proprietary hydrogel material as previous models.

"With the addition of the PDN-Solo XL, patients with larger disc spaces now have a partial disc replacement option in the form of a single-unit implant,” noted Tony Phillips, president and CEO of Raymedica. "The benefits of the new single-unit implant are identical to those currently offered by PDN-Solo device, which includes reduced operating room time, ease of surgical technique, and greater surgeon satisfaction.”




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