Multilevel Minimally Invasive Lumbar Decompression: Clinical Efficacy and Durability to 2 Years

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Figure 1
Comparison of change of PROM from preoperative baseline at 3 months, 6 months, 1 year, and 2 years postoperatively from index decompression: (a) NRS-B, (b) NRS-L, (c) ODI, (d) SF12-M, (e) SF12-P, (f) SRS-30). Abbreviations: M, Mental Component Score; NRS-B, Numeric Rating Scale–Back; NRS-L, Numeric Rating Scale–Leg; ODI, Oswestry Disability Index; P, Physical Component Score; SF-12, 12-item Short Form Health Survey; SRS-30, Scoliosis Research Society survey.
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Figure 2
Example of patient who ultimately required lumbar fusion after original decompression. (a) Preoperative sagittal and axial MRI at L4-5 prior to L3-5 MIS laminectomy. (b) Postoperative sagittal and axial MRI at L4-L5 after L3-L5 MIS laminectomy. (c) Upright XR demonstrating postoperative grade I spondylolisthesis at L4-L5. (d) Postoperative upright XR after L4-L5 TLIF. TLIF, transforaminal lumbar interbody fusion; XR, x-ray.