Patient-specific 3D-printed cutting guides for high oblique sagittal osteotomy—an innovative surgical technique for nerve preservation in orthognathic surgery

Bilateral sagittal split osteotomy (BSSO) of the mandible according to Obwegeser/Dal Pont is considered to be gold standard in orthognathic surgery. Frequently reported complications of BSSO are injuries of the mandibular nerve resulting in paresthesia/anesthesia as well as inadequate mandibular bon...

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Bibliographic Details
Published in:Journal of surgical case reports 2021-08, Vol.2021 (8), p.rjab345-rjab345
Main Authors: Kämmerer, Peer W, Müller, Daniel, Linz, Friedemann, Peron, Priscila Ferrari, Pabst, Andreas
Format: Article
Language:English
Subjects:
Surgical Technique
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Summary:Bilateral sagittal split osteotomy (BSSO) of the mandible according to Obwegeser/Dal Pont is considered to be gold standard in orthognathic surgery. Frequently reported complications of BSSO are injuries of the mandibular nerve resulting in paresthesia/anesthesia as well as inadequate mandibular bone fracturing (‘bad split’). High oblique sagittal osteotomy (HOSO) was introduced to overcome these complications. We present an innovative HOSO modification using patient-specific 3D-printed cutting guides positioned on the outside of the ascending mandibular ramus and fixed in the incisura semilunaris, precisely marking the optimal height and angle of the osteotomy. Advantages are a decreased operation time due to the simplicity of this less invasive procedure, a potentially reduced frequency of mandibular nerve damage and bad splits as well as a lower bleeding risk.
ISSN:2042-8812
2042-8812
DOI:10.1093/jscr/rjab345