Congenital cervical odontoid deformity
Introduction
Introduction to congenital cervical odontoid deformity The odontoid is composed of twice as much cartilage, and if the cartilage cannot be completed, a odontoid deformity occurs. First, the odontoid deformity can cause instability of the atlantoaxial spine and cause spinal cord injury and even death. basic knowledge The proportion of illness: 0.005% Susceptible people: no specific population Mode of infection: non-infectious Complications: torticollis
Cause
Congenital cervical odontoid malformation
Cause:
The cause of congenital cervical odontoid malformation is still unclear. The odontoid base is formed by the cervical vertebral ossification center, while the neck 1 ring is a variant intervertebral disc. The dentate process contained in the ring is the neck. 1 The protrusion formed by the ossification center to the cranial side was completed at the age of 10 and the neck 2 ossification center. Such as embryonic developmental disorders or trauma or infection before the combination of factors, can lead to dysplasia of the odontoid or not combined or incomplete combination, resulting in a variety of congenital malformations.
Prevention
Congenital cervical odontoid malformation prevention
The disease is a congenital disease, and the cause is unclear, so there is no effective preventive measures at present, early detection, early diagnosis, early treatment is still an effective measure to prevent further damage caused by this disease.
Complication
Complications of congenital cervical odontoid malformation Complications
The disease mainly causes neck pain, torticollis, muscle tension and limited head and neck activity. In severe cases, it can cause instability of the atlantoaxial spine and cause spinal cord injury, resulting in quadriplegia and death.
Symptom
Congenital cervical odontoid deformity symptoms Common symptoms Neck pain Head and neck activity limitation Spasm
Odontoid separation, dysplasia or absence, its clinical manifestations are basically the same, clinically asymptomatic, when subjected to a slight trauma, there may be symptoms of medullary or upper cervical spinal cord compression, mainly manifested as neck pain, torticollis, Muscle tension and limited head and neck activity, severe quadriplegia and death, lateral or open orthotopic X-ray film can be seen as short or absent odontoid, such as separation of the teeth, free bone and The anterior arch of the atlas is connected and has a large gap with the odontoid.
Examine
Examination of congenital cervical odontoid deformity
According to the clinical manifestations, the atlantoaxial side position and the open orthotopic X-ray film are not difficult to make a diagnosis. The CT examination can confirm the type of deformity. The neck side position and the open orthotopic X-ray film can be seen as short or missing odontoid, such as For the separation of the teeth, the free bone is connected to the anterior arch of the atlas and has a large gap with the odontoid. CT examination can clearly show the type of odontoid deformity.
Diagnosis
Diagnosis and diagnosis of congenital cervical odontoid deformity
diagnosis
According to the clinical manifestations, the atlantoaxial side and the open orthotopic X-ray film are not difficult to make a diagnosis, and the CT examination can confirm the type of deformity.
The first odontoid malformation includes odontoid separation, odontogenic dysplasia and odontoid stenosis.
Differential diagnosis
(1) Those under 2 years of age should be distinguished because the dentate sacral nucleus does not appear;
(2) After the age of 2 years, due to the fusion of the odontoid nucleus and the odontoid body, it is easy to be misdiagnosed as a odontoid deformity.
