Le Fort I osteotomy of the maxilla continues to be one of the most common techniques used in the surgical correction of a variety of dento-midfacial deformities. Occasionaly, however, surgeons may encounter difficulties during three-pieces Le Fort I procedures because the surgical movements are also prone to adverse movement and subsequent relapse. This case report describes a 26 year old man, who presented with a skeletal Class III malocclusion and a transverse maxillary deficency. The malocclusion was corrected with a bilateral sagittal split osteotomy (BSSO) and a segmental Le Fort I and post-treatment stabilization was achieved with the STABLE (Surgical Tripartition Auxiliary Block Element), a new and innovative device usefull after three-part maxillary Le Fort I surgery