A subarachnoid screw for monitoring intracranial pressure

1973 ◽  
Vol 39 (3) ◽  
pp. 416-419 ◽  
Author(s):  
John K. Vries ◽  
Donald P. Becker ◽  
Harold F. Young
Keyword(s):  
Intracranial Pressure ◽  
Local Anesthesia ◽  
Subarachnoid Space ◽  
New Technique ◽  
Content Type ◽  
A New Technique ◽  
Fine Print

✓ A new technique for monitoring intracranial pressure is presented. It is based on a hollow screw in the skull whose tip projects through the dura into the subarachnoid space. The screw can be easily inserted under local anesthesia. Pressure is monitored isovolumetrically by connecting the screw to a transducer. The system can be calibrated in situ and has been successfully used in 56 patients during a 6-month period.

En bloc petrosectomy using a Gigli saw for petroclival lesions

1995 ◽  
Vol 83 (3) ◽  
pp. 559-560 ◽  
Author(s):  
Tomio Sasaki ◽  
Makoto Taniguchi ◽  
Ichiro Suzuki ◽  
Takaaki Kirino
Keyword(s):  
Facial Nerve ◽  
Semicircular Canals ◽  
Petrous Bone ◽  
New Technique ◽  
En Bloc ◽  
Content Type ◽  
A New Technique ◽  
Transtentorial Approach ◽  
Fine Print

✓ The authors report a new technique for en bloc petrosectomy using a Gigli saw as an alternative to drilling the petrous bone in the combined supra- and infratentorial approach or the transpetrosal—transtentorial approach. It is simple and easy and avoids postoperative cosmetic deformity. This technique has been performed in 11 petroclival lesions without injuring the semicircular canals, the cochlea, or the facial nerve.

A new technique for exposure of the cervical spine laminae

2002 ◽  
Vol 96 (1) ◽  
pp. 122-126 ◽  
Author(s):  
Tateru Shiraishi
Keyword(s):  
Cervical Spine ◽  
New Technique ◽  
Diverse Range ◽  
Content Type ◽  
Spinous Processes ◽  
Technical Details ◽  
A New Technique ◽  
Fine Print

✓ The author describes a new technique for exposure of the cervical spine laminae in which the attachments of the semispinalis cervicis and multifidus muscles to the spinous processes are left untouched. It provides a conservative exposure through which a diverse range of posterior cervical surgeries can be performed. In contrast to conventional cervical approaches, none of the muscular attachments to the spinous processes is compromised. In this paper the author describes the technical details and discusses the applications of the procedure.

Negative-pressure hydrocephalus

1995 ◽  
Vol 83 (3) ◽  
pp. 486-490 ◽  
Author(s):  
Michael Vassilyadi ◽  
Jean-Pierre Farmer ◽  
José L. Montes
Keyword(s):  
Intracranial Pressure ◽  
Pressure Gradient ◽  
Negative Pressure ◽  
Subarachnoid Space ◽  
Ventricular Dilation ◽  
Content Type ◽  
Arnold Chiari Malformation ◽  
System A ◽  
Subarachnoid Spaces ◽  
Fine Print

✓ Two cases of children with closed myelodysplasia, Arnold-Chiari malformation, and shunted hydrocephalus who underwent spinal arachnoid cystopleural shunting are presented. Postoperatively, both patients developed craniovertebral symptomatology accompanied by radiologically documented ventricular dilation in spite of negative intracranial pressure and functional ventriculoperitoneal (VP) shunts. Both patients recovered after the cystopleural shunts were revised to increase the resistance to flow within the system. The authors believe that some communication between the arachnoid cyst and the subarachnoid space existed in both cases and that the negative pleural pressure was transmitted preferentially to the spinal and cerebral convexity subarachnoid spaces with relative sparing of the ventricular system. A transmantle pressure gradient was thereby established, leading to ventricular dilation. The authors further suggest that a craniospinal gradient was possibly established as well, leading to craniovertebral symptomatology in the patients. Return of flow in the VP shunts was obtained by correcting this iatrogenic transmantle pressure gradient.

Selective posterior rhizotomy for treatment of spasticity

1983 ◽  
Vol 58 (6) ◽  
pp. 895-899 ◽  
Author(s):  
Lauri V. Laitinen ◽  
Stefan Nilsson ◽  
Axel R. Fugl-Meyer
Keyword(s):  
General Anesthesia ◽  
Muscle Contractions ◽  
New Technique ◽  
Similar Technique ◽  
Good Reduction ◽  
Content Type ◽  
Tonic Muscle ◽  
A New Technique ◽  
Selective Posterior Rhizotomy ◽  
Fine Print

✓ In 1976, Fasano, et al., described a new technique of posterior rhizotomy for treatment of spasticity. They stimulated electrically fascicles of the posterior roots in spastic patients and found that some fascicles responded to stimulation with tonic muscle contractions. They cut these fascicles, preserving those with a weaker or no reaction. The present authors have used a fairly similar technique in the treatment of eight patients with spasticity of the legs and one patient with spasticity of the arm: all fascicles of the posterior roots T12-S1 and C6–8, respectively, were stimulated electrically during surgery under general anesthesia. Approximately 60% to 80% of the fascicles responded to stimulation with tonic muscle jerks, and only these fascicles were cut. All nine patients showed a good reduction of spasticity. The residual cutaneous and joint sensation remained unchanged. Motility of the limbs usually improved.

Anchoring of deep brain stimulation electrodes using a microplate

1996 ◽  
Vol 85 (6) ◽  
pp. 1181-1183 ◽  
Author(s):  
Jacques Favre ◽  
Jamal M. Taha ◽  
Timothy Steel ◽  
Kim J. Burchiel
Keyword(s):  
Deep Brain Stimulation ◽  
Subthalamic Nucleus ◽  
Brain Stimulation ◽  
Movement Disorders ◽  
New Technique ◽  
Content Type ◽  
A New Technique ◽  
Fine Print ◽  
Deep Brain

✓ The authors report a new technique to anchor deep brain stimulation electrodes using a titanium microplate. This technique has been safely used to secure 20 quadripolar deep brain stimulation electrodes implanted for movement disorders (18 electrodes) and pain (two electrodes). Twelve electrodes were implanted in the thalamus, four in the subthalamic nucleus, and four in the pallidum. No electrode migration or rupture occurred, and all electrodes have been shown to work properly after internalization of the system.

Ventriculofiberscope: a new technique for endoscopic diagnosis and operation

1973 ◽  
Vol 38 (2) ◽  
pp. 251-256 ◽  
Author(s):  
Takanori Fukushima ◽  
Buichi Ishijima ◽  
Kimiyoshi Hirakawa ◽  
Norio Nakamura ◽  
Keiji Sano
Keyword(s):  
Ventricular System ◽  
Endoscopic Diagnosis ◽  
New Technique ◽  
Content Type ◽  
A New Technique ◽  
Fine Print

✓ The authors report a new ventriculofiberscope useful in both diagnosing and operating on lesions of the ventricular system. The technique and its advantages are illustrated in representative cases.

Experimental syringomyelia

1980 ◽  
Vol 52 (6) ◽  
pp. 812-817 ◽  
Author(s):  
Peter Hall ◽  
Michael Turner ◽  
Steven Aichinger ◽  
Phillip Bendick ◽  
Robert Campbell
Keyword(s):  
Intracranial Pressure ◽  
Subarachnoid Space ◽  
Ventricular Pressure ◽  
Arterial Pulse ◽  
Content Type ◽  
Spinal Subarachnoid Space ◽  
Valve Effect ◽  
Experimental Canine ◽  
Pressure Changes ◽  
Fine Print

✓ The influence of ventricular pressure changes on syrinx pressure was investigated in this study of experimental canine kaolin-induced syringomyelia. The pressures of the ventricles, syrinx, and cervical subarachnoid space were measured. A complete ventriculosubarachnoid block occurred in the animals with syringomyelia. The baseline syringeal pressures exceeded those of both the ventricles and the subarachnoid space. Raising ventricular pressure elevated the syringeal pressure, but aspiration of ventricular fluid did not acutely lower the pressure. These findings suggest a ventriculosyrinx valve effect that may inflate the syrinx during transient rises of intracranial pressure. A respiratory pressure pattern was found in the syrinx similar to that of the ventricles and subarachnoid space. This wave was reduced but not abolished by ligating the subarachnoid space distal to the syrinx. The arterial pulse was much diminished within the syrinx at rest. These findings indirectly support the possibility that transmission of thoracic pressures to the spinal subarachnoid space with compression of the syrinx is a principal force that enlarges the syrinx.

Intraparenchymal embolization for obliteration of an intramedullary AVM of the spinal cord

1977 ◽  
Vol 47 (1) ◽  
pp. 119-125 ◽  
Author(s):  
James I. Ausman ◽  
Lawrence H. Gold ◽  
S. Murthy Tadavarthy ◽  
Kurt Amplatz ◽  
Shelley N. Chou
Keyword(s):  
Spinal Cord ◽  
Arteriovenous Malformation ◽  
New Technique ◽  
Content Type ◽  
A New Technique ◽  
Fine Print

✓ A new technique is presented in which expandable compressed Ivalon sponge emboli were used to obliterate an intramedullary arteriovenous malformation of the spinal cord by intraparenchymal embolization. A case is described in which this method was used.

A bone and cable girth-hitch technique for atlantoaxial fusion in pediatric patients

2002 ◽  
Vol 97 (3) ◽  
pp. 400-402 ◽  
Author(s):  
Douglas L. Brockmeyer
Keyword(s):  
Pediatric Patients ◽  
Screw Fixation ◽  
New Technique ◽  
Transarticular Screw ◽  
Content Type ◽  
Transarticular Screw Fixation ◽  
Atlantoaxial Fusion ◽  
A New Technique ◽  
Halo Orthosis ◽  
Fine Print

✓ A new technique for performing a posterior rib and multistranded cable atlantoaxial fusion in children is described. The technique has been used successfully, in two patients 22 and 18 months of age, respectively. In both cases, fusion was used to augment C1–2 transarticular screw fixation, and solid arthrodesis was achieved without a halo orthosis.

Closure of large skin defect associated with thoracolumbar rachischisis

1977 ◽  
Vol 47 (5) ◽  
pp. 781-784 ◽  
Author(s):  
Ken Winston ◽  
Parker Mickle ◽  
Samuel Schuster
Keyword(s):  
Premature Infant ◽  
New Technique ◽  
Skin Defect ◽  
Full Thickness ◽  
Content Type ◽  
A New Technique ◽  
Large Skin ◽  
Fine Print

✓ The management of a premature infant with a large skin defect associated with thoracolumbar rachischisis is presented. Full-thickness closure was achieved in 8 days using a new technique, adapted from a method of closing large omphaloceles.

Sign in / Sign up

Export Citation Format

Share Document