[Minimally invasive surgical treatment for lumbar degenerative disease with IsoC-3D navigation under Mast Quadrant system].

Objective: To evaluate the effects of surgical treatment of IsoC-3D navigation assisted percutaneous pedicle screw fixation,vertebral canal decompression and interbody fusion using Mast Quadrant system in patients with lumbar degenerative disease.

Methods: From January 2009 to February 2010,21 patients with lumbar degenerative disease were treated with IsoC-3D navigation under Mast Quadrant system. There were 12 males and 9 females, with an average age of 50.2 years (ranged,36 to 72 years). All patients underwent discectomy,vertebral canal decompression, cage implantation using Mast Quadrant system and IsoC-3D navigation assisted sextant lumbar fixation. Clinical outcomes were evaluated with Oswestry disability index (ODI), Visual analog scale (VAS) and degree of satisfaction of patients.

Results: Eighteen patients (85.7%) were followed up from 6 to 18 months with an average of 10 months. No surgery-related complications were found. The preoperative, postoperative ODI scores was 49.6 +/- 12.2 and 17.2 +/- 9.2, respectively (P < 0.01); VAS score of leg pain decreased from preoperative 75.2 +/- 10.0 to 12.2 +/- 11.8 at final follow-up (P < 0.01); VAS score of lumbago decreased from preoperative 59.9 +/- 17.3 to 16.6 +/- 11.5 at final follow-up (P < 0.01). Sixteen patients obtained satisfactory results.

Conclusion: IsoC-3D navigation assisted percutaneous pedicle screw fixation,vertebral canal decompression and interbody fusion using Mast Quadrant system could achieve satisfactory clinical results in treating lumbar degenerative disease and may be a better alternative to conventional surgical procedures. It has advantages such as limited tissue damage, less blood loss, short time in hospital.