. A practical treatise on fractures and dislocations. most entirely to uncover the end of the ulna, and that in forced pro-nation the uncovering became complete. In reply to a question askedby Velpeau, he admitted that the displacement did not persist uponthe cadaver unless the hand was held upward and supinated, but hethought that the tonic contraction of the muscles in the living wouldmaintain it. He did not explain why such a lesion should be moreeasily produced in a child than in an adult. It may be worth while to add that the editor of the Medico-Chirur-gieal Review, in 1839, thought the
. A practical treatise on fractures and dislocations. most entirely to uncover the end of the ulna, and that in forced pro-nation the uncovering became complete. In reply to a question askedby Velpeau, he admitted that the displacement did not persist uponthe cadaver unless the hand was held upward and supinated, but hethought that the tonic contraction of the muscles in the living wouldmaintain it. He did not explain why such a lesion should be moreeasily produced in a child than in an adult. It may be worth while to add that the editor of the Medico-Chirur-gieal Review, in 1839, thought the injury was a separation of theupper epiphysis of the radius, and Fougeu, in 1861, a separation ofthe lower one. Pingaud,^ in his experiments upon the cadaver, found, as Goyrandhad similarly done in 1837, that the head of the radius could bedrawn out through the orbicular ligament by forcible adduction of theforearm, so far that its anterior edge would engage below the lowerborder of the ligament (Fig. 413), and the bones would remain sepa- FiG. Subluxation of the head of the radius. (Pingatjd.) rated by a distance of about a quarter of an inch, but without dis-placement of the radius forward, backward, or outward, unless forcedpronation w^as added to the adduction, in ^vhich case the head movedforward ; and as this condition of the parts coincided w^ith a limitationof the freedom of rotation of the forearm similar to that observedclinically in the cases in question, and as the normal relations of theparts were restored by the same manoeuvres which relieved the littlepatients, he reached the conclusion that the nature of the lesion 1 Goyrand: Bull, de la Societe de Chir., 1861, p. 596. 2 Pingaud: Loc. cit., 1878. DISLOCATIONS OF THE RADIUS ALONE. 733 patients, he reached the conclusion that the nature of the lesi(jnobserved clinically was the same as that which he had producedexperimentally, and that the clinical injury was, therefore, a disloca-tion of the radius downward
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfractur, bookyear1912
