Abstract
Introduction
Osteogenesis imperfecta (OI) is an inheritable disorder of bone development caused by defective collagen synthesis. The attendant basilar impression or secondary basilar invagination is uncommon but can be devastating.
Clinical materials and methods
Fifty-two patients with osteochondrodysplasia (28 with OI, six with Hajdu-Cheney syndrome, six with Paget’s disease, and 12 with spondyloepiphyseal dysplasia) with basilar impression were evaluated between 1985 and 2005. The male/female ratio in this cohort was 1:1. The mean age at presentation was 12.2 years.
Symptoms
Symptoms and signs included headache, lower cranial nerve dysfunction, dysphagia, respiratory embarrassment, weakness, and ataxia.
Treatment
In the earlier part of the series (1985–1995), all patients with hydrocephalus were shunted and a ventral transoral decompression made for ventral compression of the pontomedullary junction followed by a dorsal occipitocervical fusion. As a result of this evaluation, it was felt that most patients would benefit by early bracing after the hydrocephalus was shunted if it existed. However, 20% of patients still required an anterior ventral decompression and the occipitocervical fusion.
Results
The results showed that the fusions were stable but over a period of time, there was progressive forward bending with osteogenesis imperfecta as well as with the Hajdu-Cheney syndrome. All patients with spondyloepiphyseal dysplasia had a good strong stable fusion which stood the test of time.
Conclusion
In conclusion, we feel that early intervention with occipitocervical bracing can prevent the progressive march of significant basilar impression which leads to mortality.
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Menezes, A.H. Specific entities affecting the craniocervical region. Childs Nerv Syst 24, 1169–1172 (2008). https://doi.org/10.1007/s00381-008-0602-z
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DOI: https://doi.org/10.1007/s00381-008-0602-z