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21 June 2024 : Clinical Research  

Functional Outcomes of Therapeutic Selective Nerve Root Block for Single-Segment Lumbar Spinal Stenosis: A Retrospective Study

Shiqian Xiao1ABCE*, Shan Zhu2BCDEF, Binggang Guan3BCDEF, Jianlan Zhao4ACEF

DOI: 10.12659/MSM.943634

Med Sci Monit 2024; 30:e943634

Abstract

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BACKGROUND: Functional evaluation after therapeutic selective nerve root block (SNRB) has been rarely reported. We explored functional outcomes of SNRB for single-segment lumbar spinal stenosis (LSS).

MATERIAL AND METHODS: Data for 117 patients with single-segment LSS who underwent single therapeutic SNRB were retrospectively collected between January 2019 and December 2021. Functional outcomes were assessed using Oswestry Disability Index (ODI) and Japanese Orthopaedic Association (JOA) scores preoperatively, and 3 days, and 3, 6, and 12 months after SNRB, which were compared in subgroups stratified by age, sex, BMI, sedentary time, hypertension, diabetes, affected side, pathology level, intervertebral disk. Correlation between ODI and JOA was analyzed using univariate linear regression analysis.

RESULTS: Clinical symptoms of LSS significantly improved within 12 months after SNRB, especially at 6 months (P<0.05). ODI scores in each subgroup gradually decreased within 6 months after SNRB, and JOA scores gradually increased. Most subgroup analyses revealed significantly increased ODI scores and decreased JOA scores at 12 months after SNRB, compared with 6-month scores (P<0.05). Notably, ODI and JOA scores at 12 months after SNRB were not significantly different than those before SNRB in patients with BMI >25 or sedentary time >8 h (P>0.05). A significant correlation existed between ODI and JOA scores (P<0.05).

CONCLUSIONS: Therapeutic SNRB was an effective treatment for alleviating LSS within at least 6 months. Changing sedentary habits with appropriate exercise and controlling weight with a healthy diet can improve the effectiveness of SNRB, especially in patients for whom conservative treatment is ineffective and who are unsuitable for surgical treatment.

Keywords: Spinal Nerve Roots, Spinal Stenosis

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750