Complex sentence: The maxilla can be adjusted using a "Lefort I" level osteotomy (most common), or the midface can be mobilised as well by using a Lefort II, or Lefort III osteotomy.
Split into simpler sentences: The maxilla can be adjusted using a "Lefort I" level osteotomy (most common). Sometimes the midface can be mobilised as well by using a Lefort II, or Lefort III osteotomy.