Closed vertical subcondylar osteotomy (CVSO) of the mandible. A most versatile procedure

The closed vertical subcondylar osteotomy (CVSO) of the mandible is accomplished with a wire saw. Through a systematic approach to anatomical landmark recognition and application of a very definite series of surgical maneuvers, the surgeon can achieve optimum results with little sequelae. Because the proximal segment resulting from this osteotomy is considerably larger than that produced in the closed subcondylar osteotomy, this procedure allows for a greater degree of movement (anterior, posterior and even rotational) of the distal segment. This added versatility permits the use of the CVSO in the treatment of aperthognathia, micrognathia, posterior open bite, and various combinations of these deformaties, as well as prognathia.