Fracture patterns in cleft orthognathic surgery. a cross-sectional study.
Ércio Júnior Montenegro de Andrade1, Isabela Toledo Teixeira da Silveira2, Bhárbara Marinho Barcellos1
1Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo (HRAC/USP). Bauru, Brazil. ercio.montenegro@gmail.com , bharbarambarcellos@usp.br , renatoyaedu@gmail.com Universidade de São Paulo Hospital for Rehabilitation of Craniofacial Anomalies University of São Paulo (HRAC/USP) Bauru Brazil ercio.montenegro@gmail.com bharbarambarcellos@usp.br renatoyaedu@gmail.com.
This study found no link between mandibular anatomy and fracture patterns after bilateral sagittal osteotomy in cleft lip and palate patients. Surgeons can use this anatomical data to improve surgical planning and patient outcomes.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthognathic Surgery
- Craniofacial Anomalies
Background:
- Bilateral sagittal osteotomy (BSO) is a common procedure for mandibular advancement.
- Fracture patterns on the lingual aspect of the mandible post-BSO require further investigation, especially in patients with cleft lip and palate.
- Understanding mandibular anatomical variations is crucial for surgical success.
Purpose of the Study:
- To identify fracture patterns on the lingual mandible after BSO.
- To correlate these patterns with mandibular anatomical characteristics.
- To aid surgical planning in cleft lip and palate patients.
Main Methods:
- Analysis of 200 cone beam CT scans (100 pre-operative, 100 post-operative).
- Evaluation of lingual mandibular surface fractures.
- Assessment of mandibular anatomical features including fossa depth, body height, and angle.
Main Results:
- No correlation found between mandibular fossa depth, body height/angle, and fracture type.
- Type 3 fracture pattern (through mandibular canal) was most common.
- No association identified between anatomical aspects and undesired fracture occurrence.
Conclusions:
- Mandibular anatomical characteristics do not predict fracture patterns after BSO.
- Type 3 fractures are most prevalent.
- Anatomical data can guide surgeons in selecting safer techniques and osteotomy sites for cleft lip and palate patients.
