Abstract
This preliminary report demonstrated a new technique, “intramuscular sensory neurolysis” (IMSN), to control the muscle spasticity. Similar to myofascial trigger point (MTrP) injection, the needle were rapidly inserted, for a short distance (1 mm) each thrust, into the MTrP region (in the endplate zone) to elicit local twitch responses to identify the terminal sensory fibers for phenol injection. Immediate relief of spasticity was noticed both subjectively and objectively after IMSN. As compared with the traditional motor point block, the advantage of IMSN includes: 1) less time (usually 3-5 minutes for each MTrP region) required to perform the whole procedure in a site, 2) less amount of phenol solution required to inject a muscle to obtain significant therapeutic effectiveness, 3) less trauma to muscle, 4) Less systemic side effects, 5) no obvious side effect of motor weakness, and 6) less cost.
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