- Taking out part or all of a bone, or cutting into or through bone.
* * *- “C” sliding o. an extraoral o. in the shape of a “C” performed bilaterally in the mandibular rami for the correction of retrognathia and/or apertognathia.- horizontal o. an o. performed intraorally for genioplasty; the inferior aspect of the anterior mandible is advanced or retruded by movement of the free segment.- Le Fort o. an o. performed along the classic lines of fracture as described by Le Fort to correct a maxillary skeletal deformity; classified as Le Fort o. I, lower maxillary; II, pyramidal nasoorbitomaxillary; or III, high maxillary, depending upon the location.- sagittal split mandibular o. an intraoral surgical procedure for correction of retrognathism, apertognathia, and prognathism; the mandibular rami and posterior body are sectioned in the sagittal plane.- segmental alveolar o. an intraoral surgical procedure in which segments of alveolar bone containing teeth are sectioned between, and apically to, the teeth for the repositioning of the alveolus and teeth; it may be maxillary or mandibular, and may be combined with ostectomy.- sliding oblique o. an oral surgical procedure in which the mandibular ramus is cut vertically from the sigmoid notch to the angle to facilitate posterior repositioning of the mandible in correction of mandibular prognathism; it may be performed extraorally or intraorally, and is similar to vertical o..
* * *os·te·ot·o·my .äs-tē-'ät-ə-mē n, pl -mies a surgical operation in which a bone is divided or a piece of bone is excised (as to correct a deformity)
* * *n.a surgical operation to cut a bone into two parts, followed by realignment of the ends to allow healing. The operation is performed to reduce pain and disability in an arthritic joint, by changing the biomechanics of the joint, for cases in which conservative treatment has failed. Osteotomy of the jaws is performed to improve severe discrepancies in jaw relation.
* * *os·te·ot·o·my (os″te-otґə-me) [osteo- + -tomy] the surgical cutting of a bone.
Medical dictionary. 2011.