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Surgical treatment for cervicomedullary compression among infants with achondroplasia
Nir Shimony1, Liat Ben-Sira, Yakov Sivan
1Department of Pediatric Neurosurgery, Dana Children's Hospital, Tel Aviv Medical Center, Tel Aviv University, 6 Weizman Street, Tel Aviv, 64239, Israel.
Insights
Early decompression surgery for cervicomedullary compression in infants with achondroplasia can improve neurological and respiratory symptoms. This intervention may prevent sudden infant death in children with this form of dwarfism.
Area of Science:
- Pediatric Neurosurgery
- Genetics and Rare Diseases
- Respiratory Medicine
Background:
- Achondroplasia, the most common dwarfism type, presents significant risks.
- Respiratory failure due to cervicomedullary compression (CMC) is a leading cause of mortality in infants with achondroplasia.
Purpose of the Study:
- To evaluate the efficacy of early cervicomedullary decompression in infants diagnosed with achondroplasia.
- To assess the impact of surgical intervention on neurological status and respiratory function.
Main Methods:
- Retrospective analysis of 10 infants with achondroplasia undergoing CMC decompression (1998-2013).
- Data included pre- and post-operative neurological exams, MRI findings, and polysomnography results.
- Surgical procedure involved foramen magnum decompression with C1 laminectomy.
Main Results:
- 70% of infants showed improved neurological status post-surgery.
- Significant improvements in sleep quality were observed in 7 patients within one year.
- Radiological improvements included resolution of T2 signal changes and improved CSF spaces in most cases.
Conclusions:
- Early diagnosis and surgical decompression of the foramen magnum and C1 lamina are crucial for infants with achondroplasia.
- This intervention can alleviate respiratory distress, enhance neurological function, and potentially reduce the risk of sudden infant death.
- Prompt surgical management offers a promising approach to improving outcomes in this vulnerable population.
Purpose:
Achondroplasia is the most common form of dwarfism. Respiratory failure is responsible for most deaths among these children and is often related to cervicomedullary compression (CMC). We present our experience with early cervicomedullary decompression in infants with achondroplasia.
Methods:
Data was retrospectively collected for infants with achondroplasia who underwent CMC decompression between 1998 and 2013. Data included presurgical and postsurgical neurological examinations, MRI scans, and sleep study results.
Results:
Ten infants were included. Ages at surgery were 4 to 23 months (12.5 ± 6.88 months). All infants displayed neurological findings prior to surgery, although often subtle. All infants underwent a foramen magnum opening with a wide C1 laminectomy. Following surgery, seven patients (70 %) demonstrated improved neurological status, and one displayed neurological deterioration. Seven patients demonstrated improved sleep quality 1 year after surgery. These patients had a good or improved neurological status following surgery. Preoperative radiological findings included abnormal hyperintense T2 changes in all children (improved following surgery in six children), brainstem distortion in four children (improved in all), and diminished cerebrospinal fluid (CSF) spaces at the level of the foramen magnum in eight children (improved in seven). One child with extensive preoperative T2 changes accompanied by neurological and respiratory decline, deteriorated following surgery, and remains chronically ventilated.
Conclusions:
Infants with achondroplasia are prone to neurological and respiratory symptoms. We believe that early diagnosis and early surgery for decompression of the foramen magnum and C1 lamina can alleviate respiratory symptoms, improve neurological status, and perhaps prevent sudden infant death in this population.
