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Minim Invasive Surg. 2018 Jul 2;2018:1035954. doi: 10.1155/2018/1035954. eCollection 2018.

Interspinous Process Decompression Improves Quality of Life in Patients with Lumbar Spinal Stenosis.

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Spine Institute of Louisiana, Shreveport, LA, USA.
The Spine Center, University of Colorado Hospital, Denver, CO, USA.
Spine Colorado, Mercy Regional Hospital, Durango, CO, USA.
Upstate Bone and Joint Center, East Syracuse, NY, USA.
San Francisco, CA, USA.
Chicago, IL, USA.


Lumbar spinal stenosis has been shown to negatively impact health-related quality of life. Interspinous process decompression (IPD) is a minimally invasive procedure that utilizes a stand-alone spacer to serve as a joint extension blocker to relieve neural compression in patients with spinal stenosis. Using the 5-year results from an FDA randomized controlled trial of IPD, the quality of life in 189 patients treated with the Superion® spacer was evaluated with the SF-12. Physical and mental component summary (PCS, MCS) scores were computed preoperatively and at annual intervals. For the PCS, mean scores improved from 29.4 ± 8.1 preoperatively to 41.2 ± 12.4 at 2 years (40%) and to 43.8 ± 11.6 at 5 years (49%) (p<0.001 for both comparisons). At 2 years, 81% (103 of 128) of subjects demonstrated maintenance or improvement in PCS scores. The mean MCS score improved from 50.0 ± 12.7 preoperatively to 54.4 ± 10.6 and 54.7 ± 8.6 at 2 and 5 years, respectively (p>0.10 for both comparisons). These results demonstrate that the significant impairment in physical well-being found in patients with lumbar spinal stenosis can be ameliorated, in large part, by IPD treatment.

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