Interventional pain medicine · 2024
The effect of lumbar medial branch radiofrequency neurotomy on cobb angle progression in individuals with adult scoliosis compared to natural history: A cross-sectional study.
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Caragea Marc, Le Austin, Curtis Tim, Ni Amelia, Clark Tyler, Joyce Andrew, Hickman Colton, Lawrence Brandon, Randell Zane, Goodman Perry, Poduska Addisyn, Rasmussen Michella, Cooper Amanda, Teramoto Masaru, Glinka Przybysz Allison, Burnham Taylor, Conger Aaron, McCormick Zachary L
Аннотация
BACKGROUND: Lumbar radiofrequency neurotomy (LRFN) effectively alleviates zygapophyseal joint-mediated pain by coagulating medial branch nerves to disrupt nociceptive signaling pathways. The concomitant denervation of multifidus fibers has led to concern that LRFN may increase segmental instability and accelerate degenerative changes in patients with certain pre-existing spinal pathologies. There is a paucity of literature evaluating whether LRFN increases the progression of spinal curvature in patients with adult scoliosis.
OBJECTIVE: Compare the lumbosacral Cobb angle progression rate in patients with adult scoliosis who underwent LRFN to the annual progression rate of 0.83 ± 1.1° expected by natural history.
DESIGN: Cross-sectional study.
METHODS: Consecutive patients diagnosed with adult scoliosis who underwent LRFN to treat zygapophyseal joint-related low back pain were identified. Patient demographics, LRFN procedure details, and radiographs confirming scoliosis were collected from electronic medical records. Pre- and post-LRFN radiographs were used to calculate the average annual rate of Cobb angle progression. Data were analyzed using a Wilcoxon signed-rank test and a linear regression model.
RESULTS: Sixty patients (mean age 69.2 ± 11.6 years; 70.0 % female) met the criteria and were included in the analyses. The mean time to radiographic follow-up was 35.0 ± 22.7 months post-LRFN. The average Cobb angle progression was 0.54 ± 3.03° per year and did not differ significantly from the known natural progression rate of 0.83 ± 1.1° per year. None of the included covariates (body mass index, LRFN laterality, and number of levels denervated) were significantly associated with the average annual Cobb angle progression rate.
CONCLUSIONS: Our results suggest that LRFN has no appreciable effect on the rate of Cobb angle progression in patients with adult scoliosis.
OBJECTIVE: Compare the lumbosacral Cobb angle progression rate in patients with adult scoliosis who underwent LRFN to the annual progression rate of 0.83 ± 1.1° expected by natural history.
DESIGN: Cross-sectional study.
METHODS: Consecutive patients diagnosed with adult scoliosis who underwent LRFN to treat zygapophyseal joint-related low back pain were identified. Patient demographics, LRFN procedure details, and radiographs confirming scoliosis were collected from electronic medical records. Pre- and post-LRFN radiographs were used to calculate the average annual rate of Cobb angle progression. Data were analyzed using a Wilcoxon signed-rank test and a linear regression model.
RESULTS: Sixty patients (mean age 69.2 ± 11.6 years; 70.0 % female) met the criteria and were included in the analyses. The mean time to radiographic follow-up was 35.0 ± 22.7 months post-LRFN. The average Cobb angle progression was 0.54 ± 3.03° per year and did not differ significantly from the known natural progression rate of 0.83 ± 1.1° per year. None of the included covariates (body mass index, LRFN laterality, and number of levels denervated) were significantly associated with the average annual Cobb angle progression rate.
CONCLUSIONS: Our results suggest that LRFN has no appreciable effect on the rate of Cobb angle progression in patients with adult scoliosis.