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At least 73 records · Page 4Linked to original sources

[Significance of intraosseous skull cap hematoma for reconstruction of skull injuries].

Diaphanoscopic postmortal examination of blunt impact injuries to the head sometimes revealed non-diaphanous regions deriving from intraossary haematomata. Precise delimitation of these haematomata in the diploe from haematopoietic foci or neoplastic lesions was possible by means of histological examination. The location of the intraossary skull-cap haematomata coincided with corresponding injuries of the scalp as contusions and lacerations; they were often accompanied by fissural bone lesions and linear fractures. As such a diploetic haemorrhage represents a facultative counterpart of scalp contusion, its demonstration allows conclusions to be drawn as to the area of the impact, even if, owing to postmortal changes, the scalp is no longer assessable.

Adult↗

Pediatric skull, skull base, and meningeal tumors.

Calvarial neoplastic and non-neoplastic tumors are routinely encountered by all neurosurgeons. Benign and malignant skull base and meningeal tumors are relatively rare lesions in children. Interdisciplinary approaches to those tumors more frequently encountered in the pediatric population in these locations are discussed. Unique aspects of the diagnosis, treatment, and prognosis for infants and children are discussed.

Child↗

[Comparison of anthropometric and radiometric skull measurements of the first two years of life. 2nd Part: Results (normal values) of kephalometric data -- results of linear metrics of the skull and planimetric results of x-ray analysis (author's transl)].

Statistical criteria allow the results of researches on head resp. skull measurements of more than 1200 infants of Erfurt to be taken as normal values, yielding slightly larger figures as up to now in use. Optimum appreciation of growth requires combination of all methods mentioned.

Cephalometry↗

[Cloverleaf skull and other malformations of the skull. Pathology and clinical aspect].

Malformations of different parts of the cartilage results in achondrogenesis II, thanatophoric dwarfism and in metatropic dwarfism. Whether the base of the skull or the cranial-distal skeleton are affected, both together or separately, depends upon the localization of the defect within the cartilage. The different types of the cloverleaf syndrome are characterised by a defect of vessels and cartilage that affect the chondrocranium and the cranial-distal skeleton in different grades. The mal-development of the vessel-system is particularly marked in the upper back of the calotte.

Abnormalities, Multiple↗

The effects of experimental unilateral anotia on skull development in the chick embryo. IV. Development of the bony skull in embryos of 9-20 days of incubation.

The study of the development of the bony skull in chick embryos with unilateral (right-sided) anotia revealed the following characteristics: 1. The perichondral bones initially follow exactly the cartilaginous structures to which they are related. Later, they may expand desmally to fill up the gaps and diminish the degree of pre-existing asymmetry. 2. The desmal bones which develop in close contact with cartilage, develop parallel to its margins and, hence, appear to be greatly dependent on the chondrocranium. 3. Among the desmal bones which arise independently from cartilage, only the bones of the cranial vault proved to be influenced by the unilaterally anotic condition.

Animals↗

[Radiological determination of skull thickness and skull thickness increase in patients with severe blood dyscrasias and hyperplasia of the red marrow (author's transl)].

A method is described for measuring the thickness of the cranial bones in x-ray pictures of the skull, which in a reliable way can only be done in the frontal and the parietal bones. From the results, representative and comparable values have been obtained consisting of the mean and maximum thickness of the bones and of the mean deviation of the thickness in the bone. By using these values, the thickness has been determined in normal persons and the increase of thickness established in different patients suffering from a number of blood disorders. A scale of increasing degrees of thickening could be set up ranging form normal conditions to extraordinary enlargement. As the thickening of the bones is due to the hyperactivity of the red marrow contained in the bones, and the increase of thickness depends on the intensity of the overgrowth of the marrow and of the time of its action on the osseous substance, from the thickness of the bones a conclusion can be drawn regarding the presence, the severity and the duration of the existing blood disorder. Since, moreover, the enlargement of the bones is irreversible, an increased thickness of the cranial bones may, in patients without alterations in the blood, point to a former blood disorder.

Adolescent↗

The effects of clonidine premedication and scalp infiltration of lidocaine on hemodynamic responses to laryngoscopy and skull pin head-holder insertion during skull base procedures.

This study was designed to determine if oral clonidine or lidocaine, injected into the scalp before head-holder (H-H) insertion, would attenuate the hemodynamic effects associated with intubation and H-H placement. Thirty-four patients undergoing skull base procedures were randomized to four groups. Group 1 received clonidine 5 mcg/kg po before surgery with 10 to 15 ml of 1% lidocaine infiltrated at pin insertion sites; Group 2 received clonidine with saline infiltration; Group 3 received a placebo preoperatively and had lidocaine infiltrated at pin sites; and Group 4 received a placebo with saline infiltrated. All patients had a standard anesthetic titrated to a 10 to 14 Hz EEG endpoint during laryngoscopy and H-H placement. Mean arterial pressure (MAP) was similar between groups during intubation, but heart rate (HR) increased in patients who did not receive clonidine. H-H application increased HR and MAP in Group 4. HR also increased after H-H placement in patients who received oral clonidine, while patients receiving scalp lidocaine or both clonidine and scalp lidocaine had little change in either value. Clonidine attenuated HR increases after laryngoscopy but not after H-H placement. Lidocaine injected at the pin sites reduced HR, and MAP increased after H-H insertion. The combination of oral clonidine and scalp lidocaine blunted hemodynamic responses to both intubation and H-H placement.

Journal Article↗

Studies on the parietal region of the cervid skull. I. Remarks on the os interparietale in the skull of the roe deer (Capreolus capreolus L.).

In the roe deer skull symmetrically arranged ossa interparietalia were found to develop from paired centers of ossification. Obliteration of the sutura interinterparietalis mostly started already late in prenatal life, whereas closure of the interparietal and the interparietoparietal sutures as a rule commenced around the second week post partum. A certain degree of variability with respect to the timing of sutural closure was observed. No synostosis occurred between the os parietale resp. os interparietale and the os supraoccipitale, so that even in old animals the sutura parieto- resp. interparietooccipitalis was always present.

Animals↗