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The current SDR technique. (A) The single level laminectomy; (B) the plane between the dorsal and ventral nerve roots; (C) dorsal nerve roots are collected in a sling in order to expose the ventral motor roots; (D) peacock probes are used to systematically stimulate the dorsal roots from lateral (L2), to medial (S1). SDR, selective dorsal rhizotomy.
