Our placebo controlled, prospective, randomized study indicated that 10 cc local anesthetic injections supply significantly better pain control than lower doses for periprostatic nerve blockade during prostate biopsy. Although bilateral basal plus apical 10 cc lidocaine injections resulted in the lowest mean pain score, there was no statistically significant difference from 10 cc bilateral basal injections.

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We found a highly variable thickness of the LC muscle in anatomic and imaging studies, which may lead to negative block results.

MSCs were more effective than MNC in obtaining neuronal recovery. Substantial but incomplete functional improvement was associated with donor type in vivo imaging signals more frequently than the number of neuronal cells expressing donor markers in spinal cord sections in vitro. Our results are in favor of functional recovery arising from both donor MSC and MNCs, contributing to direct neuronal regeneration and additional indirect mechanisms.