Modified spreader for facilitating controlled osteotomy in orthognathic surgery: RAI and JAIN Modification

Excerpt

During sagittal split osteotomy, in approximately 2.3% cases per site, the osteotomy propagates in a malapropos direction, known as bad split [1]. There are various risk factors influencing the occurrence of bad splits including incomplete corticotomy cuts, the presence of third molars, age of the patient, mandibular morphology, design of osteotomy, and the experience of the surgeon [1]. Bad splits usually eventuate when a corticotomy is remodeled into a complete osteotomy. In accomplishing desired results during orthognathic surgeries, avoiding such bad splits is a preeminent concern. In order to prevent this complication, various instruments have been designed which control the direction of osteotomy. …