Giant-cell tumours and aneurysmal bone cysts of the spine. With special reference to the problems related to the removal of a vertebral body.
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Adolescent↗
Biomedical subjects
H Verbiest
Publications and source records attributed to H Verbiest.
The treatment of lumbar spondyloptosis or impending lumbar spondyloptosis accompanied by neurologic deficit and/or neurogenic intermittent claudication.
Three patients with complete lumbar spondyloptosis and 8 patients with fourth-degree spondylolisthesis suffering from radicular signs and symptoms are reported. There were 8 female and 3 male patients in the study. A high incidence of neurogenic intermittent claudication was noted in this condition. Decompressive laminectomy and foraminectomy were performed on all patients followed by transabdominal console fusion. Length of follow-up varied from 3 to 17 years, with a mean value of 13.5 years, and results are reported. Radicular signs and symptoms had completely subsided in all cases. Nine of 11 patients are free from signs and symptoms and 2 suffer from residual pain, although less severe than before surgery. All 3 males fathered children after surgery, which is in contrast to the opinion that anterior lumbosacrial fusion is followed by infertility in males. Special attention was given to individuality of remodeling of the lumbosacral junction over the course of time. Solid fusion was obtained in 10 of the 11 patients, while the console fusion collapsed because of failure to follow instructions after surgery in 1 patient.
Adolescent↗
The significance and principles of computerized axial tomography in idiopathic developmental stenosis of the bony lumbar vertebral canal.
Computerized axial tomography (CAT) in cases of stenosis of the lumbar bony vertebral canal may demonstrate features of diagnostic significance in the shape of the canal and the bony structures surrounding it. The distinguishing features are the measurements. Standardized measurements of the midsagittal diameters at the cephalad and caudad borders of the laminas of the vertebral canal are proposed as a means of furthering both surgical and comparative studies. Identification of these borders in CAT scans is described, as is the procedure for taking measurements. One or two interlaminar, transarticular CAT scans are also made. In these scans, the midsagittal diameters cannot be measured because the ligamentum flavum forms the posterior wall in the midline. The scans may, however, demonstrate narrow lateral recesses and deformities of the articular processes and joint spaces. Errors in measurement of midsagittal diameters result from the inability of CT body scanners to show the angle between axial sections and the anterior vertebral canal wall, and from the partial volume phenomenon. The diameters are then too large. Errors in the angle of axial sections also lead to distortion in reconstructions of sagittal sections of the vertebral canal from the soft material obtained from axial sections. New precision designs are described. The principal indication for the intrathecal injection of water-soluble contrast media in CAT scanning is the determination of the thickness of the ligamentum flavum. Apart from its value in distinguishing various forms of stenosis, CAT scanning may also reveal inadequacies in surgical decompression.
Anthropometry↗
The orientation of laminae and facet joints in the lower lumbar spine.
The relationship between the angulation of the facet joints and that of the caudad parts of the corresponding laminae in the transverse plane was investigated with computed tomography (CT) at the vertebral levels L3-L4, L4-L5, and L5-S1. At the level of L3-L4, both the facet joints and the caudad portions of the laminae tend toward a sagittal orientation, while at L5-S1 this is more toward the frontal plane. At the level of L4-L5, they occupy an intermediate position. A highly significant correlation between the orientation of these structures is demonstrated. The caudad parts of the laminae may be considered buttresses for the inferior articular processes of the same vertebra.
Biomechanical Phenomena↗
[The arterial supply of tumors of the glomus jugulare as demonstrated with routine carotid and vertebral angiography and with artificial low flow carotid angiography].
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Carotid Artery, External↗
Basic principles of surgery upon the anterior portion of the spine.
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Cervical Vertebrae↗
Treatment post-traumatic locking become irreducible after manipulative manoeuvres.
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Bone Transplantation↗