1/19. Boomerang deformity of cervical spinal cord migrating between split laminae after laminoplasty.patients with cervical compression myelopathy were studied to elucidate the mechanism underlying boomerang deformity, which results from the migration of the cervical spinal cord between split laminae after laminoplasty with median splitting of the spinous processes (boomerang sign). Thirty-nine cases, comprising 25 patients with cervical spondylotic myelopathy, 8 patients with ossification of the posterior longitudinal ligament, and 6 patients with cervical disc herniation with developmental canal stenosis, were examined. The clinical and radiological findings were retrospectively compared between patients with (B group, 8 cases) and without (C group, 31 cases) boomerang sign. Moderate increase of the grade of this deformity resulted in no clinical recovery, although there was no difference in clinical recovery between the two groups. Most boomerang signs developed at the C4/5 and/or C5/6 level, where maximal posterior movement of the spinal cord was achieved. Widths between lateral hinges and between split laminae in the B group were smaller than in the C group. Flatness of the spinal cord in the B group was more severe than in the C group. In conclusion, the boomerang sign was caused by posterior movement of the spinal cord, narrower enlargement of the spinal canal and flatness of the spinal cord.- - - - - - - - - - ranking = 1keywords = herniation (Clic here for more details about this article) |
2/19. spinal cord herniation into an extradural arachnoid cyst.A herniation of the thoracic spinal cord into the mouth of an extradural arachnoid cyst is reported in a 37 year old man. This is the 20th case, but the first posterior herniation; all the others were anterior. He presented with progressive paraparesis and the magnetic resonance imaging (MRI) showed kinking of the cord into the cyst. Surgical release of the neck of the hernia was successful.- - - - - - - - - - ranking = 6keywords = herniation (Clic here for more details about this article) |
3/19. Acute posttraumatic spinal cord herniation. Case report and review of the literature.Transdural herniations of the spinal cord are rare, and those occurring acutely after a spinal cord injury (SCI) are particularly unusual. In this report, the authors present the case of acute posttraumatic spinal cord herniation in a patient who sustained severe polytraumatic injuries. The clinical manifestations were acute flaccid paralysis of the right leg and rapidly progressive sensorimotor deficits of the contralateral leg. The herniation was surgically reduced. Postoperatively left leg paralysis was completely resolved. The authors review the pertinent literature, and suggest that, with regard to another underlying pathophysiological mechanism, cases of acute posttraumatic spinal cord herniation should be differentiated from those "posttraumatic" cases in which herniation of the spinal cord occurs years or even decades after the traumatic event. To the best of the authors' knowledge, only one similar case has been previously reported. They conclude that acute posttraumatic spinal cord herniation should be included in the differential diagnosis of acute neurological deterioration after SCI.- - - - - - - - - - ranking = 10keywords = herniation (Clic here for more details about this article) |
4/19. Retropulsion of intervertebral discs associated with traumatic hyperextension of the cervical spine and absence of vertebral fracture: an uncommon mechanism of spinal cord injury.STUDY DESIGN: Case report of a 68-year-old male who sustained cervical trauma following a bodysurfing accident. OBJECTIVE: To describe the pathology of a relatively uncommon mechanism of injury involving extradural cord compression associated with traumatic disc protrusion and herniation, following a cervical hyperextension injury in which there was no vertebral fracture or residual subluxation. SETTING: Department of Neuropathology, Royal Perth Hospital, West australia. METHOD: Postmortem pathology report. RESULTS: Evidence of multiple ruptures of anterior longitudinal ligament with posterior intervertebral disc herniation and three discrete foci of central cord hemorrhage. CONCLUSION: Observations are consistent with cervical extension injury and an injury vector that involves intense axial loading sufficient to cause multiple disc failures, disc herniation and retropulsion leading to extradural disc compression and cord hemorrhage.- - - - - - - - - - ranking = 3keywords = herniation (Clic here for more details about this article) |
5/19. Injuries during a massive tug-of-war game."Tug-of-war" may cause a variety of sports injuries, which has rarely been reported previously. This report described an uncommon case of a previously fit 64-year-old male who presented with abrupt onset of loss of consciousness after falling down in a game of massive tug of war including 1,500 participants as the rope snapped apart. Computed tomography (CT) scan of his abdomen revealed liver and spleen rupture. spinal cord injury due to traumatic herniation of intervertebral disc at C5-6 level and bilateral brachial plexus injury were also noted after exploratory laparotomy with primary repair of liver and spleen. He then received diskectomy over C5-6 and C6-7 and neurolysis for the right brachial plexus. Multiple neurological complications including paraplegia, severe neuralgia over bilateral C5 dermatome and spasticity over bilateral lower extremities developed. After two-year comprehensive rehabilitation programs, the patient recovered to ambulate with assistive device, and resumed partially dependent daily living activities.- - - - - - - - - - ranking = 1keywords = herniation (Clic here for more details about this article) |
6/19. Upper thoracic spinal cord herniation after traumatic nerve root avulsion. Case report and review of the literature.Transdural herniation of the spinal cord, a rare but well-documented entity, has been reported sporadically for more than 25 years as a possible cause for various neurological signs and symptoms ranging from isolated sensory or motor findings to myelopathy and brown-sequard syndrome. The authors report, to the best of their knowledge, the first case of upper thoracic spinal cord herniation occurring after traumatic nerve root avulsion.- - - - - - - - - - ranking = 6keywords = herniation (Clic here for more details about this article) |
7/19. Complete cervical intervertebral disc extrusion with spinal cord injury in the absence of facet dislocation: a case report.STUDY DESIGN: Complete cervical disc complex extrusion, defined as the extrusion of both cartilaginous end-plates, the entire nucleus pulposus, and portions of the anulus fibrosus, is rare. A case of complete cervical disc complex extrusion with spinal cord injury in the absence of facet dislocation or subluxation in an obtunded patient is reported. OBJECTIVE: To report an unusual presentation of spinal cord injury and the occurrence of complete traumatic cervical disc complex extrusion in the absence of facet dislocation and normal plain radiographic findings. SUMMARY OF BACKGROUND DATA: Traumatic cervical disc herniation occurs in 54% to 80% of patients with facet dislocation. A report of complete extrusion of a cervical intervertebral disc complex (cartilaginous endplate, anulus, and nucleus pulposus) with spinal cord injury in the absence of dislocation has not been described, to the best of the authors' knowledge. methods: A clinical and radiographic review of such a case of complete traumatic cervical disc complex herniation in the absence of dislocation was performed. RESULTS: Plain radiographic imaging did not show any injury. A nondisplaced fracture of the left inferior facet joint was evident on computed tomography. The diagnosis of C4-C5 intervertebral disc extrusion was made only after magnetic resonance imaging. The vacuum effect of complete disc extrusion created a "white-out" appearance to the disc space on the sagittal T2 magnetic resonance image. The patient underwent anterior cervical discectomy and fusion with additional posterior cervical fusion. He subsequently regained functional strength against gravity in two of four limbs. He remains completely paraparetic in the left upper extremity and partially paraparetic in the left lower extremity. CONCLUSION: The case report highlights the occurrence of complete traumatic cervical disc extrusion in the absence of facet dislocation with normal plain radiographic findings and consequent spinal cord injury, which can accompany such an injury.- - - - - - - - - - ranking = 2keywords = herniation (Clic here for more details about this article) |
8/19. Intracerebral hemorrhage secondary to autonomic dysreflexia in a young person with incomplete C8 tetraplegia: A case report.Intracerebral hemorrhage is an unusual complication of autonomic dysreflexia and can be fatal if massive bleeding occurs with brain herniation. We report the case of a man in his midthirties with incomplete tetraplegia who suffered right putaminal hemorrhage during an episode of autonomic dysreflexia. Prompt recognition and removal of the triggering factors of autonomic dysreflexia quickly brought his blood pressure under control and the patient had a favorable functional outcome after rehabilitation. A review of the literature suggests that the location of hemorrhage in autonomic dysreflexia-induced cases is similar to that in the general population. The most common triggering factors are bladder distension in men and labor induction in women. Hemorrhagic stroke can also occur in patients with incomplete spinal cord injury (SCI) who develop autonomic dysreflexia. The role of sympathetic skin response examination is also discussed. This life-threatening complication should be kept in mind in the case of people with SCI.- - - - - - - - - - ranking = 1keywords = herniation (Clic here for more details about this article) |
9/19. Acute quadriplegia following closed traction reduction of a cervical facet dislocation in the setting of ossification of the posterior longitudinal ligament: case report.STUDY DESIGN: A case report of acute quadriplegia resulting from closed traction reduction of traumatic bilateral cervical facet dislocation in a 54-year-old male with concomitant ossification of the posterior longitudinal ligament (OPLL). OBJECTIVES: To report an unusual presentation of a spinal cord injury, examine the approach to reversal of the injury, and review the treatment and management controversies of acute cervical facet dislocations in specific patient subgroups. SUMMARY OF BACKGROUND DATA: The treatment of acute cervical facet dislocations is an area of ongoing controversy, especially regarding the question of the necessity of advanced imaging studies before closed traction reduction of the dislocated cervical spine. The safety of an immediate closed, traction reduction of the cervical spine in awake, alert, cooperative, and appropriately select patients has been reported in several studies. To date, there have been no permanent neurologic deficits resulting from awake, closed reduction reported in the literature. A case of temporary, acute quadriplegia with complete neurologic recovery following successful closed traction reduction of a bilateral cervical facet dislocation in the setting of OPLL is presented. methods: The clinical neurologic examination, radiographic, and advanced imaging studies before and after closed, traction reduction of a cervical facet dislocation are evaluated and discussed. A review of the literature regarding the treatment of acute cervical facet dislocations is presented. RESULTS: Radiographs showed approximately 50% subluxation of the fifth on the sixth cervical vertebrae, along with computerized tomography revealing extensive discontinuous OPLL. The cervical facet dislocation was successfully reduced with an awake, closed traction reduction, before magnetic resonance imaging (MRI) evaluation. The patient subsequently had acute quadriplegia develop, with the ensuing MRI study illustrating severe spinal stenosis at the C5, C6 level as a result of OPLL or a large extruded disc herniation. Following an immediate anterior decompression and a posterior stabilization procedure, the patient regained full motor and sensory function. CONCLUSIONS: This case report highlights the advantages and shows some safety concerns regarding immediate, closed traction reduction of cervical facet dislocation with real-time neural monitoring in an awake, alert, oriented, and appropriately select patient before MRI studies in the setting of preexisting central stenosis from OPLL.- - - - - - - - - - ranking = 1keywords = herniation (Clic here for more details about this article) |
10/19. Posttraumatic spinal cord herniation.We report a 28-year-old woman who presented with a partial brown-sequard syndrome 18 months after a fall from a horse. Investigation revealed the cause of her symptoms to be a spinal cord herniation at the level of T6. A review of previously reported cases of posttraumatic spinal cord herniation was undertaken. Six of the cases reported have clear evidence of injury at the site of subsequent herniation; the remaining five cases may be related to trauma or may be spontaneous spinal cord herniation, with an unrelated history of trauma.- - - - - - - - - - ranking = 8keywords = herniation (Clic here for more details about this article) |
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