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[Radiometric study of postoperative development of skull shape and cranial volume in children with craniosynostoses]
1Klinik und Poliklinik für Kiefer- und Plastische Gesichtschirurgie, Johann-Wolfgang-Goethe-Universität, Frankfurt/Main.
Insights
This study introduces a safe, radiation-free method using skull roentgenograms for analyzing skull shape and volume in children with craniosynostosis, aiding surgical assessment and postoperative monitoring.
Area of Science:
- Pediatric Neurosurgery
- Craniofacial Surgery
- Medical Imaging
Background:
- Computed tomography (CT) is crucial for preoperative evaluation of craniosynostosis but postoperative monitoring is limited due to anesthesia and radiation.
- Accurate metric examination of cranial growth in these patients is challenging.
- A need exists for a non-invasive, repeatable method for assessing skull shape and intracranial volume post-surgery.
Purpose of the Study:
- To develop and validate an alternative to CT for assessing skull shape and intracranial volume in pediatric craniosynostosis.
- To evaluate the effectiveness of a standardized bilateral frontoorbital advancement surgical technique.
- To establish a safe, exposure-reduced method for routine preoperative and postoperative analysis.
Main Methods:
- Conventional pre- and postoperative skull roentgenograms were utilized in 15 pediatric patients (7 trigonocephalies, 4 plagiocephalies, 4 syndromal craniosynostoses).
- A modified craniometric analysis (Ebel and Schmid methods) was performed to assess skull length, height, and breadth.
- Intracranial volume and skull shape were analyzed, with results validated against published data.
Main Results:
- Skull shape and intracranial volume demonstrated positive development, varying with the specific craniosynostosis type.
- Standardized bilateral frontoorbital advancement was confirmed as an effective surgical intervention.
- The developed roentgenogram-based analysis method proved easy, safe, and effective for routine use.
Conclusions:
- Skull roentgenogram analysis offers a viable, low-exposure alternative to CT for craniosynostosis assessment.
- This method facilitates regular preoperative diagnostics and postoperative control of cranial growth.
- The findings support the routine implementation of this craniometric analysis in managing pediatric craniosynostosis.
Abstract:
Preoperative CT diagnostics seem indispensible for evaluation of hard and soft tissue situation in children with craniosynostoses. Regular postoperative control is limited because of general anaesthesia and radiation exposure. Therefore, cranial growth of these children is hardly metrically examined. A method is looked for to replace CT for this indication and to allow differentiated analysis of skull shape and intracranial volume. 15 children (7 trigonocephalies, 4 plagiocephalies, 4 syndromal craniosynostoses) were operated on using a standardized bilateral frontoorbital advancement. Using conventional pre- and postoperative skull roentgenograms, a craniometric analysis of skull length, height and broadth according to the modified method of Ebel [9] and Schmid et al. [22] was carried out for assessment of the skull shape and the intracranial volume. Skull shape and volume showed good development (depending on the synostosis form). The bilateral frontoorbital advancement proved to be an effective operation method. Validation of results was given by comparison with normal and patient populations known from the published literature. The presented easy, safe and exposure-reduced method of analysis should be used regularly in preoperative diagnostics and routine postoperative control of craniosynostoses.