[Complications in Spine Surgery: Prospective 13-year follow-up of unplanned revision spinal surgeries].

PURPOSE OF THE STUDY Unplanned revision spinal surgeries constitute a complication in the treatment algorithm for the patient, surgeon and the entire treatment team. Any complication leading to an unplanned revision surgery is therefore undesirable. The percentage of complications referred to in publications on this topic focusing on unplanned revision surgeries only varies from 0.

[Surgical Therapy of Fixed Atlantoaxial Rotatory Dislocation - Monocentric Study of 15 Patients].

PURPOSE OF THE STUDY Atlantoaxial Rotatory Dislocation (AARD) mostly occurs in children and prevailing majority of cases are successfully managed by non-operative treatment. Surgical intervention is necessary in patients in whom non-operative treatment failed, in case of repeated dislocations and in patients with anatomical defects of the atlantoaxial complex. The purpose of the presented study is the radiological and clinical evaluation of patients with AARD surgically treated at our department.

[Surgical Treatment of High-Grade High-Dysplastic Spondylolistheses in Young Patients - Prospective Monocentric Study of 29 Patients].

PURPOSE OF THE STUDY An optimal technique to surgically treat high-grade high-dysplastic (HG HD)spondylolistheses remains disputable. There are multiple surgical procedures described, ranging from a simple posterior fusion in situ without fixation through a standalone anterior lumbar interbody fusion with the oblique insertion of a structural bonegraft to instrumented full reduction and 360-degree fusion. At our department, preference is given to the instrumented monosegmental reduction and fixation by a fixator with Schanz screws.

Anatomy of the dens and its implications for fracture treatment: an anatomical and radiological study.

Purpose: The most common injuries to the upper cervical spine are fractures of the dens axis. Therefore, the purpose of our study was to answer three questions, namely (1) whether the size of the dens is adequate at all levels to accommodate two screws, (2) what the angle of the posterior tilt of the dens is in a healthy individual and (3) compare the measured variables between the sexes.

Methods: The cohort comprised 50 males and 50 females CT examination of the craniocervical junction.

[Giant Ganglioneuroma of the Spine and Mediastinum].

Unlabelled: The case of a 15-year-old girl with a large ganglioneuroma in the mediastinum and spinal canal is presented. The tumour initially manifested as scoliosis. Its diagnosis was made on the basis of CT scanning and magnetic resonance imaging, and confirmed by thoracoscopic mediastinal biopsy.

[Collet-Sicard Syndrome due to Occipital Condyle Fracture. Case Report].

The case of a 63-year-old man diagnosed with Collet-Sicard syndrome due to a fracture of the right occipital condyle is presented. The cause of injury was falling off a bicycle. Dysphonia and dysphagia were present from the moment of injury, with the gradual development of light atrophy of the tongue muscles and right trapezius muscle.

Total En Bloc Spondylectomy of C3: A New Surgical Technique and Literature Review.

Purpose Of The Study: Radical resection of a vertebra is reserved only for specific tumors that invade the surrounding tissues and recur when not removed completely. The vertebra may be removed using a piecemeal technique or en bloc, using only two (in thoracolumbar spine) or more osteotomies (in cervical spine). We present our technique of en bloc resection of subaxial cervical vertebra for Ewing's sarcoma of C3, with preservation of all nerve roots and both vertebral arteries.

[Unstable injuries to the upper cervical spine in children and adolescents].

Purpose Of The Study: Injuries to the upper cervical spine in children are rare and account for 0.6 to 9.5% of all cervical spine injuries.

[ProDisc-C Total Disc Replacement. A four-year prospective monocentric study].

Purpose Of The Study: To present the results of an independent prospective monocentric study of patients with ProDisc-C Total Disc Replacement (CTDR) followed up for 4 years, and to analyse the most frequent late complications, in particular heterotopic ossification.

Material: In the period from October 2004 to May 2006, a total of 61 patients underwent ProDisc-C CTDR involving one or two segments at the Department of Spinal Surgery, University Hospital in Motol. This study included 39 patients who were followed up for at least 4 years.

[Spinal cord concussion: a retrospective study of twenty-four patients].

Purpose Of The Study: Spinal cord concussion is characterised as fully reversible, temporary inhibition of conductive function due to trauma, without signs of structural changes. Although neurological deficit is usually related to the severity of spinal injury, this is different in spinal cord concussion. The aim of this retrospective study was to evaluate a group of 24 patients with spinal cord concussion, to design a diagnostic algorithm and propose an effective therapy with a good prognosis for the patients.

[Kyphotic deformities of the cervical spin].

Purpose Of The Study: The development of a cervical kyphotic deformity can be associated with a degenerative disease, trauma, tumour, developmental anomaly and also a surgical procedure. Post-operative kyphosis can develop after both the anterior and posterior surgical approaches. The deformity can also result from systemic diseases, such as ankylosing spondylitis or rheumatoid arthritis.

[Pulmonary polymethylmetacrylate embolism: a rare complication of percutaneous vertebroplasty].

Percutaneous vertebroplasty is a minimally invasive surgical technique involving transpedicular injection of polymethylmetacrylate into the vertebral body. The aim of this procedure is to enhance the mechanical strength of a pathologically changed vertebra. Currently, the method is most often used for painful osteoporotic vertebral fractures, aggressive haemangiomas, necrotic lesions and spinal tumours, particularly the metastatic ones.

[Hyperextension trauma in patients with cervical spondylosis].

PURPOSE OF THE STUDY To evaluate retrospectively a group of patients with hyperextension injury to the cervical spine who were treated at the Department of Spinal Surgery of the University Hospital in Motol, Prague, between 2003 and 2006. MATERIAL The group comprised 22 patients, 17 men (77 %) and five women (23 %) in the age range of 35 to 81 years, with an average of 59.5 years.

[Distribution of orally administered aflatoxin B 1 in the tissues and organs of the goat (Capra)].

In the experiment the goat was administered an amount of 450 mg aflatoxin B1. The milk taken during the experiment was lyophilized and aflatoxins B1 and M1 were isolated. After the death of the goat some tissues, blood and bile of the experimental animal were analyzed to find out the aflatoxin content.

Aflatoxin and encephalopathy with fatty degeneration of viscera (Reye).

In the past 5 years we have observed 27 children at the age from 3 days to 8 years who died on the encephalic syndrome with fatty degeneration of the viscera (Reye). According to the morphological changes in the liver and to the clinical course, we have divided our cases into 3 groups. In the first group there were 20 children who died within 2-10 days after the first symptoms of the disease appeared.