There are no long-term studies, as yet, to establish the effect of rhizotomy on function and muscle strength.
However, rhizotomy is very effective in reducing spasticity, with all 13 published trials, including one controlled study showing good results. The procedure improves motor function (demonstrated in four clinical trials) and improves gait parameters.
Rhizotomy is associated with several problems. The major drawback is weakness, but others include dysaesthesia, spinal deformity and increases or decreases in hip subluxation.