SCORBUTIC BEADING OF THE RIBS

Tumors of the ribs.

The object of this paper on tumors of the rib is three-fold. First, to point out that many of them are not metastatic, secondly, that primary malignant tumors are not more frequent than benign tumors, and thirdly, to present some exemplary conditions one should consider in the differential diagnosis of rib tumors. The present review covers the contributions on primary rib tumors through 1953 an...

Biomechanics of stretch-induced beading.

To account for the beading of myelinated fibers, and axons of unmyelinated nerve fibers as well of neurites of cultured dorsal root ganglia caused by mild stretching, a model is presented. In this model, membrane tension and hydrostatic pressure are the basic factors responsible for axonal constriction, which causes the movement of axonal fluid from the constricted regions into the adjoining ax...

Sclerotomal origin of the ribs.

The somites of vertebrate embryos give rise to sclerotomes and dermomyotomes. The sclerotomes form the axial skeleton, whereas the dermomyotomes give rise to all trunk muscles and the dermis of the back. The ribs were thought to be ventral processes of the axial skeleton and therefore to be derived from the sclerotomes; however, recently a dermomyotomal origin of the distal rib (the costal shaf...

Evaluation of Neurovascular Complication of Cervical Ribs

Introduction: Cervical rib is relatively uncommon congenital abnormality that originates from the seventh cervical vertebrae and rarely from the sixth vertebrae. The purpose of this paper is to consider that this abnormal condition is an important cause of neurovascular compression at the thoracic outlet. Methods: In this study all patients who were referred to radiology departm...

Investigations into the pathogenesis of scorbutic dystrophy.