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Selective intradural dorsal rhizotomy proved to be effective for persistent radicular leg pain

Selective intradural dorsal rhizotomy proved to be effective for persistent radicular leg pain Selective intradural dorsal rhizotomy proved to be effective for persistent radicular leg pain
Selective intradural dorsal rhizotomy proved to be effective for persistent radicular leg pain Selective intradural dorsal rhizotomy proved to be effective for persistent radicular leg pain

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SIDR shows promising results in managing persistent radicular leg pain, but clinical studies evaluating the comparative cost-effectiveness of SIDR over SCS are required.

As per a prospectively followed case series published in 'The spine journal: official journal of the North American Spine Society', the selective intradural dorsal rhizotomy (SIDR) is a safe and effective method in patients with persistent monoradicular leg pain without the residual nerve root compression.


Lumbar disc surgery for radicular leg pain is one of the most commonly executed spine procedures with approximately 20 % of patients with poor outcomes. The complicated cases show persistent leg pain without residual nerve compression. Management of refractory cases is restricted to medical pain treatment, dorsal root ganglion stimulation and spinal cord stimulation (SCS). Good results are achieved by dorsal root ganglion stimulation and spinal cord stimulation (SCS) in only 50% of patients, however, the costs and complication rates associated with these procedures is high. Selective intradural dorsal rhizotomy (SIDR) is used as an alternative procedure, but it is abandoned due to poor results and readily available modern treatments


Sierk H. Bakker et al. conducted a prospective case series to report the efficacy of SIDR for persistent monoradicular leg pain without residual nerve root compression and compare the results with those of SCS. Patients with persistent monoradicular leg pain and no residual nerve root compression were included in this study. Roland Disability Questionnaire (RDQ), Likert Scale and Visual Analogue Scale (VAS) for leg pain were noted. Treatment complications and patient consent for repeating the procedure were documented. A total of 8 patients were selected and SIDR was performed. The patients were followed prospectively, and RDQ, VAS and Likert Scale for leg pain were noted at intake, at 8th week and 1 year after the surgery and yearly afterwards. A time period of 20 months was selected as mean follow-up period.


The results indicated an improvement in VAS score from 80 mm at intake to 34 mm at the latest follow-up. Out of a total of eight patients, five patients (63%) depicted a good Likert Scale outcome (complete or near-complete recovery of leg pain). The RDQ scores changed from 19, 5 at intake to 12, 7 at the end of follow-up. Four patients (57%) reached an MCID for VAS at 1 year after the surgery and one reached borderline MCID. Five patients (71%) achieved an MCID for RDQ at 1-year post-surgery. Six patients (75%) would undergo this procedure again.


Keeping in mind the high costs and complication rates of SCS, the results of this study warrant a randomized controlled trial distinguishing the cost-effectiveness of SIDR and SCS, noted the study investigators.

Source:

The spine journal: official journal of the North American Spine Society

Article:

Selective intradural dorsal rhizotomy for persistent radicular leg pain: a contemporary series

Authors:

Sierk H. Bakker et al.

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