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Wiring or Screwing at the Craniovertebral Junction in Childhood: Past and Present Personal Experience
Massimiliano Visocchi1, Francesco Signorelli2, Alessandro Olivi1
1Institute of Neurosurgery, Catholic University School of Medicine, Rome, Italy.
Insights
Screws in the lateral masses offer a simpler, safer, and less expensive alternative to sublaminar wires for craniovertebral junction (CVJ) fusion in children, with comparable fusion rates and clinical improvement.
Area of Science:
- Pediatric Neurosurgery
- Spinal Surgery
- Orthopedic Surgery
Background:
- Craniovertebral junction (CVJ) instrumentation and fusion in children commonly utilize sublaminar wires or lateral mass screws.
- Both sublaminar wiring and lateral mass screw techniques are considered safe for pediatric CVJ stabilization.
Purpose of the Study:
- To compare the outcomes of sublaminar wiring versus lateral mass screw techniques for craniovertebral junction (CVJ) instrumentation and fusion in pediatric patients.
- To evaluate the safety, efficacy, and resource utilization of two distinct surgical approaches for CVJ instability in children.
Main Methods:
- A retrospective review of 12 pediatric patients undergoing CVJ fusion was conducted.
- Six patients with congenital instability (Down's syndrome, Morquio's syndrome, os odontoideum) were treated with posterior wiring and fusion.
- Six patients with iatrogenic instability (post-decompression) were treated with lateral mass screw fixation and fusion.
Main Results:
- All 12 patients demonstrated improved clinical outcomes postoperatively, with a mean follow-up of 118.5 months.
- Neuroradiological assessment confirmed satisfactory bony fusion and successful neural decompression in all cases.
- The screwing technique group experienced less operative time, reduced blood loss, and decreased postoperative discomfort compared to the wiring group.
Conclusions:
- The screwing technique for CVJ fusion in children is associated with reduced operative time, blood loss, and postoperative discomfort.
- While requiring precise preoperative imaging, the screwing technique offers advantages in simplicity, safety (no neurovascular injury risk), and lower cost.
- Both wiring and screwing techniques achieve satisfactory bony fusion and clinical improvement in pediatric CVJ instability.
Background:
Craniovertebral junction (CVJ) instrumentation and fusion in childhood are frequently performed with either sublaminar wires or screws in lateral masses, and both are considered quite safe procedures.
Methods:
Our experience deals with 12 children: six (mean age 9.5 years) harbouring a congenital instability associated with Down's or Morquio's syndromes and primary os odontoideum; and six (mean age 11.5 years) with acquired iatrogenic instability due to transoral anterior decompression for different reasons (inferior clivectomy, anterior arch removal and odontoidectomy). All patients in the 'congenital group', except for one, had preoperative dynamic x-rays and underwent surgical correction by means of posterior wiring, fusion and an external orthosis. All patients in the 'iatrogenic group' had no preoperative dynamic x-rays and underwent a screwing technique with fusion and an external orthosis.
Results:
The postoperative clinical picture had improved in all patients at the latest follow-up (observation range 63-202 months [mean 118.5 months]), with neuroradiological confirmation of satisfactory bony fusion and with neural decompression in all patients.
Conclusion:
Although it requires a more accurate preoperative neuroradiological setting, the screwing technique takes less time and is characterized by less blood loss and less postoperative discomfort than the wiring technique. The latter features confirm the simplicity, safety (continuous fluoroscopic assistance is not necessary, and there is no risk of neurovascular injuries) and lower expense (neither complex hardware devices nor neuronavigation systems are required) of the screwing technique.
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