• Michael C Munin, Brinda K Navalgund, Donna A Levitt, Terry P Breisinger, and Ross D Zafonte.
• Department of Physical Medicine & Rehabilitation, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA. muninmc@msx.upmc.edu
• Brain Inj. 2004 Apr 1; 18 (4): 403-7.

Primary ObjectiveTo determine if the finger flexor mapping technique is useful in the reduction of spasticity when injecting neurotoxin within the flexor digitorum superficialis muscle.Research DesignCase series of consecutive persons with acquired brain injury with upper limb spasticity.Methods And ProceduresThe flexor digitorum superficialis mapping technique was used to determine the optimal location for botulinum toxin A insertion into each belly of the flexor digitorum superficialis. Modified Ashworth Scale (MAS) ratings were recorded pre- and post-flexor digitorum superficialis injection from 17 patients (18 limbs) with upper limb spasticity.Main Outcomes And ResultsThe pre-injection mean MAS score was 3.0 +/- 0.7 and the post-injection mean MAS score was 1.5 +/- 0.9 for this cohort. Using the Wilcoxon matched pairs signed rank test, the mean MAS finger flexor scores decreased significantly ( p < 0.05). No adverse events were noted with the procedure.ConclusionsThis novel technique appears to be feasible and effective for placement of botulinum toxin in the treatment of finger flexor spasticity. Further studies are warranted to compare this method of administration with other injection approaches for the treatment of finger flexor spasticity.

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