Last update: 02/05/2019, Dr. Miguel B. Royo Salvador, Medical Board number 10389. Neurosurgeon y Neurologist.
A vertebral dislocation is defined as a bone moving out of its place. When it affects the spine, the vertebral dislocation allows the spine to move out of line, with ligament and vertebral fractures that produce instability of the spine and prevent from carrying out the usual movements.
Depending on where the vertebral dislocation occurs, it can be defined as:
The symptoms that a vertebral dislocation can cause vary based on:
The symptoms that can be generated by a vertebral dislocation are mainly pain in the affected area and/or alteration of sensitivity and of the corresponding functions and of the contiguous nervous structures.
A vertebral dislocation is an injury that prevents vertebral ligaments from holding together bones or vertebrae and joints in their place, producing their separation or misplacement. This separation can be observed through an X-ray, a Computed axial tomography (CAT) or a Nuclear magnetic resonance (NMR).
The specialist indicates the necessary radiological and imaging tests based on the clinical history and physical examination, when suspecting a vertebral dislocation.
In general, a vertebral dislocation is produced when the movement of the joint – among bones, vertebrae or apophysis – is overstretched. This usually happens with falls and accidents, sudden and excessive movements, or any trauma (with or without external forces) that involves an excessive stretching of the vertebral joint.
As consequences of accidents and traumas, vertebral dislocations’ probability increases with:
The complications of a vertebral dislocation in general consist of the aggravation of the symptoms, with the consequent worsening of the patient’s quality of life (for example with paresis, paralysis or partial or complete loss of sensitivity). The persistence of a dislocation can also damage the nerves, the spinal cord or the blood vessels around the dislocated joint.
The vertebral dislocation that can incur in the most severe complications is the atlanto-axial one, which involves the separation of the odontoid from the surface of the atlas with which it forms the joint. In this case, as in the more severe cases of cervical dislocations, this can compress the spinal cord and produce neurological or vascular lesions, even sectioning the cord and causing death. Therefore, as soon as it is diagnosed, this dislocation is usually intervened.
– The conservative treatment for vertebral dislocations in general consists of vertebral immobilization and administration of anti-inflammatory medication and painkillers, avoiding overloading the spine with weight, reducing physical strains, doing physiotherapy, etc. In some cases this can help to improve, but is rarely completely effective.
– In most cases, due to the compression of the nerves or the risk of it, the indication is of surgical treatment by instrumented arthrodesis. This surgery performs a permanent fusion of two or more vertebral segments, in order to prevent them from moving.
At our centre we apply vertebral arthrodesis with grafting, prosthesis and instrumented, a surgical technique that has excellent results in most cases and a minimal complications rate.
-Caso No. 312
16-year-old patient with a dislocation between the second and third cervical vertebra, after suffering a trauma when playing football. Operated with excellent results (Fig.1,2,3,4).
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