Which of these orthognathic surgeries needs a horizontal cut in the ramus?
SSRO- Sagittal Split Ramus Osteotomy, which if done bilaterally is called BSSO. It involves a horizontal cur in the ramus on the medial side up to lingual, a vertical cut in the body between first and second molar up to the interior border and a sagittal cut, connecting the previous two cuts. SSRO is the work horse of mandibular orthognathic surgeries and is used for advancements, setbacks and minor asymmetry corrections.
VRO
SSRO
Inverted Losteotomy
Subapical osteotomy