Biomedical subjects
Publications and source records attributed to L Skibo.
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In the search for a fracture of the elbow in children, the position of the anterior humeral line is a valuable aid. It has been stated that a true lateral radiograph is required to use this sign, although no criteria for assessing true laterality have been described. To develop such criteria, the authors examined 74 lateral radiographs of the elbow for 42 patients ranging in age from 9 months to 5 years, 9 months. Thirty-five of the patients did not have supracondylar fractures, and 7 did. In all of the radiographs the direction and degree of rotation, as well as the position of the anterior humeral line, were assessed relative to a series of radiographs of a cadaveric humerus in standardized positions. Examination of the humeral anatomic features in the radiographs showed that superimposition of the posterior supracondylar ridges of the humerus is the best means of confirming true laterality. This criterion is easily applied to lateral radiographs of the elbow in children. Of the radiographs reviewed, only seven were considered to represent true lateral views. Of those exposed in other degrees of rotation, the anterior humeral line gave a false indication of fracture in 19.
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Computed tomographic images of a dry human skull and an in-situ knee joint were used to construct solid three-dimensional polymer models using stereolithographic techniques that have been introduced recently into the manufacturing industry. The stereolithographic technique makes use of a computer-steered narrow laser beam to solidify the model within a bath of liquid photocurable polymer. The method does not suffer from the cutting-tool size and path constraints encountered in the more commonly used process of machining the models from a solid block of foam.
Previous experiments in our laboratory and elsewhere have shown that extended macromolecules of high molecular weight are needed in the suspending medium to transmit the quantum-mechanical coherent interaction of human erythrocytes. Albumin, a globular protein, does not transmit the interaction at physiological concentrations. Albumin can be converted into a transmitter by preheating a solution of albumin to 62 degrees C for 20 min. Such treatment unravels the tertiary structure of albumin and allows it to polymerize.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.