[DEFINITION OF ANTERO-POSTERIOR DISPLACEMENT OF THE ODONTOID PROCESS OF THE AXIS WITH THE AID OF THE BASILAR LINE].
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A case of traumatic synchondrotic disruption in a 15-month-old girl is reported; she was treated with interlaminar wiring of C1-C2 without grafting. Reduction of the dislocation and angulation and stability were achieved without evidence of growth disturbance. However, the child's initial poor neurological status with tetraplegia below the level of C7 remained unchanged. Besides our case, there are only three other cases in the literature of young children primarily operated on for a traumatic odontoid synchondrotic disruption. Even though the dorsal interlaminar wiring of C1-C2 without grafting is an easy and safe procedure even in the very young, the optimal form of treatment for this rare injury is still unsettled.
In a retrospective study 33 fractures of the dens were analyzed. Nonoperative treatment was successful in types I and III, but unsuccessful in 48.5% of type II fractures. In addition to the poor outcome factors of Schatzker, the classification of Roy-Camille is a valuable prognostic factor.
Following surgical treatment of 2 cases of odontoïd base fracture, the authors describe the direct screw fixation technique through an anterolateral approach. This technique allows for good access and is very efficient. It results in an anatomical union with conservation of the craniospinal hinge mobility.
The surgical technique for fractured dens stabilization with the use of compression screws was discussed. This method suggested by Böhler, in certain modification due to the equipment shortage, was applied in 8 patients operated shortly after injury has occurred. Relatively simple operative technique, good results, possibility to avoid head movements restrictions usually associated with posterior approach procedures makes this method valuable in certain cases especially in centers experienced in anterior approach spine surgery.
Whiplash traumas are often looked upon as accidents that cause extensive symptomatology without the presence of objective findings. This article describes two patients who suffered a whiplash trauma where a serious pathological condition, in both cases a fracture of dens axis, was revealed after a long delay. The correct diagnosis was probably delayed by the belief that, despite florid symptoms, no objective signs are observed as a rule in cases of whiplash trauma. The author stresses the importance of assessing patients (also those with whiplash traumas) individually.
OBJECTIVE: To explore a new surgical treatment of old atlantoaxial dislocation. METHODS: 5 patients aged 12 to 45 years, who suffered from old atlantoaxial dislocation for 1 to 4.5 years, received the new surgical treatment by the transoccipitocervical posterolateral approach, and expansion of the foramen magnum, odontectomy and bony fusion of the occipitoatlantoid region were performed. Neurological examinations and CT scan were undertaken after operation. RESULTS: All 5 patients survived. Sensory function recovered almost completely and motor function was better more than 1 degree. CT scan showed the diameter of the spinal canal restored well. CONCLUSION: The transoccipitocervical posterolateral approach is an ideal and safe pathway to reach the site of old atlantoaxial dislocation and the operating field is exposed completely. Anterior-posterior decompression and occipitocervical spinal fusion can be performed simultaneously.