Pilot study: Application of intramuscular stimulation to upper extremity musculature of a child with spastic quadriparesis, cerebral palsy

The application of intramuscular stimulation to the upper extremity musculature of a child with spastic quadriparesis, cerebral palsy (CP) is investigated. Two of the objectives of this pilot study are to document the effects of an intramuscular stimulation exercise regime on stimulated and voluntary movement and to define stimulation patterns which will augment existing motor function. Intramuscular electrodes were implanted in one child with CP, and a regular exercise regime has been implemented. On a weekly basis, electrode response is measured using two different ground electrode placements, and stimulated and volitional grasps are assessed. Preliminary results indicate that ground electrode placement may affect recruitment of secondary muscles. In addition, the current grasp evaluation appears to be appropriate to assess stimulated and voluntary movement of spastic musculature.