Section of pyramidal tracts, in the spinal cord, for the relief of involuntary movements.
[G. pyramis, pyramid, + tomē, incision]
the surgical severance of pyramidal tracts in the treatment of disorders associated with involuntary muscle contractions.
pyramidotomy(pĭ-răm-ĭ-dŏt′ō-mē) [Gr. pyramis, a pyramid, + tome, incision]
Excision of the pyramidal tracts of the spinal cord in order to alleviate involuntary muscular movements.