Rachiotomy is incision of the vertebra.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern R-------MY. That is, ten letter words with 1st letter R and 9th letter M and 10th letter Y. In alphabetical order, they are: rachiotomy
laminotomy (lam-i-not-m)Excision of a portion of a vertebral lamina in which the intervertebral foramen is enlarged by removal of a portion of the lamina. Syn: rachiotomy[L. lamina, layer, + G. tom, incision hemi-One-half. Cf. semi- http://www.stedmans.com/section.cfm/45