A practical treatise on fractures and dislocations . is accomplished, the patient should be laid upon his back,with the knees resting over a pillow, and tied together lightly with atowel or a strip of cotton cloth. In order also the more certainly to pre-vent a redislocation, the thigh of the dislocated limb should be gentlyrotated outward, by which the head will be pressed forward against theanterior portion of the capsule. Such an accident, however, as a recurrence of the dislocation, in the case ofthe femur, is exceedingly rare; and I should have deemed it altogether impos-sible, except as
A practical treatise on fractures and dislocations . is accomplished, the patient should be laid upon his back,with the knees resting over a pillow, and tied together lightly with atowel or a strip of cotton cloth. In order also the more certainly to pre-vent a redislocation, the thigh of the dislocated limb should be gentlyrotated outward, by which the head will be pressed forward against theanterior portion of the capsule. Such an accident, however, as a recurrence of the dislocation, in the case ofthe femur, is exceedingly rare; and I should have deemed it altogether impos-sible, except as the result of considerable violence again applied, had not atleast two examples been reported to me upon very excellent authority. Mal-gaigne says he has himself seen an example of redislocation upon the dorsumilii, occasioned by an untimely movement;1 and Verneuil has seen, ten daysafter the reduction of a dislocation upon the ischiatic notch, the dislocationreproduced by a sudden effort of the patient to sit up;2 indeed, it is when the Fig. Tripod for vertical extension. (Bigelow.) limb is in a flexed position that the accident seems most likely to occur. Inthese remarks I mean to except those cases in which the upper margin of theacetabulum is broken off, and the head of the femur has consequently lost itsnatural support in this direction. The possibility of this accident is also con-firmed by the examples of voluntary dislocations, which I shall relate in thelast section of this chapter. Bigelows Method of Lifting.—The method of extension recommended by , namely, with the thigh at a right angle with the body, has already beenreferred to ; and there is much reason to believe that, as a rule, it is preferableto extension as practised by Sir Astley Cooper. Nearly all surgeons, however, 1 Malgaigne, op. cit., torn. ii. p. 830. Ibid., p. 840. UPWARD AND BACKWARD ON THE DORSUM IL1I. 705 have recognized the necessity of flexing the thigh in certain cases. Dr. Big
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