The Ramus Distractor is also available in three sizes (15 mm, 20 mm, and 25 mm). Distraction is performed by a rotating double hinge activator to better suit the anatomical location of placement.
FIG. 3.3.13, 3.3.14. Hoffmeister's (KLS Martin, L.P., Jacksonville, FL, USA) vertical distractor (left) for mandibular ramus lengthening (right).