Transporte óseo alveolar intraoral en pacientes con hendiduras alveolares: serie de casos Intraoral alveolar bone transportation in alveolar cleft patients: case series

Introducción: El tratamiento de la hendidura alveolar, del paciente fisurado, permite un adecuado crecimiento facial. Los injertos óseos han sido el tratamiento ideal. Sin embargo la técnica de distracción osteogénica mediante transporte óseo alveolar intraoral ha demostrado ser muy predecible. Objetivo: Describir los resultados del cierre de la Hendidura alveolar, con la técnica de transporte óseo alveolar intraoral bifocal y trifocal en pacientes labio fisurados. Diseño: Estudio retrospectivo de serie de casos. Materiales y métodos: Fueron tratados 4 pacientes con hendidura alveolar unilateral, manejados con la técnica de transporte óseo alveolar intraoral bifocal y trifocal en el año 2008 al 2009, con un seguimiento hasta el año 2014. Todos los pacientes fueron tratados con un aparato Hyrax® (Dentaurum, Alemania) modificado. Resultados: El promedio de distancia del transporte óseo requerido fue de 9,75mm (rango de 15 mm a 9 mm). Se colocaron 5 implantes dentales rehabilitados con prótesis dental fija. Conclusión: El estudio de los casos clínicos demuestra una predictibilidadelevada así como un rango de éxito alto, en los individuos tratados conesta técnica. Por tal motivo el transporte óseo alveolar intraoral es una alternativa eficaz para el tratamiento de hendiduras alveolares extensas.Introduction: The management of alveolar cleft patients, allows an adequate facial growth in cleft lip and palate patients. Bone grafts have been the gold standard treatment. However, the technique of osteogenic distraction by intraoral alveolar bone transportation has proven to be highly predictable. Objective: To describe the results of alveolar cleft management with the intraoral bifocal and trifocal alveolar bone transportation technique in cleft palate patients. Design of study: Retrospective case series study. Materials and methods: 4 patients with unilateral alveolar cleft were treated with the bifocal and trifocal intraoral alveolar bone transportation technique from 2008 to 2009. The cases were followed up until 2014. All patients were treated with a modified Hyrax® (Dentaurum, Germany) device. Results: The average distance of bone transportation required was 9.75mm (range from 15mm to 9mm). 5 dental implants with fixed dental prosthesis were placed. Conclusion: Clinical cases study demonstrated a high predictability, as well as a high success ratein individuals treated with this technique. Therefore, intraoral alveolar bone transportation is an effective alternative for the management of extensive alveolar clefts.

Combined Bone Transportation and Lengthening Techniques for the Treatment of Septic Nonunion of the Forearm Followed by Tendon Transfer

Infected nonunion of a forearm fracture complicated by a considerable skin-muscle defect poses a great challenge to orthopaedic surgeons. The treatment strategy comprises eradication of the infection, ensuring bony union and soft tissue coverage along with functional restoration. We report a case of a 23-year-old man with an open Gustilo-Anderson IIIb fracture complicated by infected nonunion after internal fixation. After thorough surgical debridement, a considerable soft tissue defect, extensor muscle loss, and posterior interosseous nerve laceration had to be addressed. He was finally treated with bone transportation and bone lengthening followed by tendon transfers.

LinDOS: A Linear Distraction Osteogenesis Simulation System for Maxillofacial Surgery Based on FEM

Developmental craniofacial deformity often has serious infection on the patient's chewing, language ability, swallowing, breathing and other related functions. Currently, internal and linear Distraction Osteogenesis (DO) are main surgery solutions of bone transportation and recovery in clinic. In this paper, we present a computer system called LinDOS for maxillofacial system reconstruction and visualization, maxillofacial tissues stress distribution analysis, as well as linear distraction osteogenesis simulation. Both design architecture and the function modules of the system are described in detail. The system can be employed as an assistant tool of maxillofacial preoperative planning and postoperative prediction for maxillofacial surgeons.

A New Device for Alveolar Bone Transportation

We present a retrospective review of a new technique for the transportation of alveolar bone using a Hyrax device modified by the principal author (O.A.V.). There were seven patients (five males and two females), including five patients with cleft palate and lip diagnosis, one patient with a high-speed gunshot wound, and one patient with facial trauma sequel due to mandibular fracture. They were all treated with an alveolar bone transportation technique (ABT) through the use of the modified Hyrax device (VEGAX). Before surgery, distraction osteogenesis of the bifocal type was performed on four patients, and the trifocal type was performed on the other three patients. However, in one case, direct dental anchorage was not used, only orthodontic appliances. In all the cases, new bone formation and gingival tissue around the defect were obtained, posterior to the alveolar distraction process; no complications were observed in any patient. In one case, two teeth involved in the disk of the ABT were extracted, due to a previous condition of periodontal disease. The alveolar bone transport with the VEGAX device is an accessible technique for almost every patient with alveolar defects due to diverse causes. In all the presented cases, predictability and success were demonstrated.