Distraction Osteogenesis in Craniofacial Surgery

Distraction osteogenesis is a biological process harnessed in craniofacial reconstruction to generate new bone by gradual mechanical tension across an osteotomy. After surgical division of the bone, an external or internal device is applied and, following a latency period, incremental distraction is performed to stimulate osteogenesis within the callus. This controlled lengthening allows simultaneous adaptation of surrounding soft tissues, neurovascular structures and skin. In craniofacial practice, distraction techniques address malformations such as midface hypoplasia in syndromic craniosynostosis, maxillary deficiency in cleft palate, and complex orbital or fronto-facial retrusion. Compared with conventional one-stage osteotomies, gradual distraction reduces relapse and soft-tissue tension, affords precise vector control and permits overcorrection to accommodate anticipated growth. Common approaches include Le Fort III osteotomy with either internal distractors or a rigid external device, monobloc advancement of combined fronto-facial segments, and bipartition of the midface for orbital hypertelorism. Key challenges lie in surgical planning to ensure parallelism of distractors, patient compliance during the activation phase and management of potential complications such as infection, device failure or malposition. Advances in three-dimensional imaging, computerised surgical guides and biomaterials aim to refine distractor placement, optimise osteotomy designs and shorten consolidation times. As global experience expands, distraction osteogenesis remains an indispensable strategy in restoring facial form, function and quality of life for patients with complex craniofacial anomalies.

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Distraction Osteogenesis in Craniofacial Surgery publication trend

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Technical terms

Distraction Osteogenesis: A method of bone lengthening where gradual mechanical tension across an osteotomy stimulates new bone formation in the gap.

Osteotomy: Surgical division or cutting of bone to allow realignment or lengthening.

Le Fort III Osteotomy: A horizontal midface osteotomy that separates the maxilla, zygoma and nasal bones for advancement.

Monobloc Advancement: A combined fronto-facial osteotomy that advances the forehead and midface as a single unit.

Rigid External Device (RED): An external distraction frame anchored by pins to bone segments, enabling gradual repositioning.

References

1. Evaluation of cephalometric points in midface bone lengthening with the use of a rigid external device in syndromic craniosynostosis patients. Brazilian Journal of Otorhinolaryngology (2009).
2. Skeletal changes after midface surgery in patients with craniofacial deformities: a three-dimensional quantification method. International Journal of Oral and Maxillofacial Surgery (2024).
3. Distractor position and distraction amplitude in fronto-facial monobloc advancement : A case series. Journal of Stomatology Oral and Maxillofacial Surgery (2024).