. Injuries and diseases of the jaws . nt, and to be secured to it by anut and a horizontal branch at its lower surface; 4th, of acap or silk nightcap to remain on the head; and 5th,of a compress corresponding in shape and size with thesplint. The net or cap having been placed on the head andthe two straps fastened to it on each side, one immediatelyin front of the ear and the other about three inches fartherback, which arc to retain the splint in its position by pass- LONSDALE S APPARATUS. 47 iug through the two holes in each horn; a silver channelis placed on the four teeth nearest to the fra
. Injuries and diseases of the jaws . nt, and to be secured to it by anut and a horizontal branch at its lower surface; 4th, of acap or silk nightcap to remain on the head; and 5th,of a compress corresponding in shape and size with thesplint. The net or cap having been placed on the head andthe two straps fastened to it on each side, one immediatelyin front of the ear and the other about three inches fartherback, which arc to retain the splint in its position by pass- LONSDALE S APPARATUS. 47 iug through the two holes in each horn; a silver channelis placed on the four teeth nearest to the fracture, on this thesmall arch of the hook is placed, and the screw end havingbeen passed through a hole in the splint, is screwed firmlyto it by the nut, after a compress has been placed betweenthe splint and the integuments below the jaw. If thereis a double fracture, two channels and two hooks must ofcourse be used/^ Bush invented a similar apparatus in 1822, and Houzelotin 1826; since which the apparatus has been variously Fig. modified by Jousset, Lonsdale, Malgaigne, and perhapsothers. Lonsdales apparatus, as Mr. Berkeley Hill remarks{British Medical Journal, March 2, 1867), is only suitedto cases of fracture between the incisors, as its ivory cap istoo short to reach far along the arch of the teeth. It isalso very cumbrous; and causes great pain by the pressureunder the chin necessary to keep the fragment in place, andby the jogging of the vertical part against the sternum. Fig. 22 shows this apparatus somewhat modified byMr. Hill, to whom I am indebted for the illustrations. Inthe ordinary Lonsdales apparatus, the rod carrying theivory cap (a) for the incisors slides freely up and down a 48 TREATMENT OF FRACTURED LOWER JAW. bar projecting downwards from the chin-piece (b)^ and,when in the required position, is fixed by a pin. jVIr. Hillhas had a screw thread cut on the bar, on which a nut (e)travels so as to force down the rod carrying the cap (a)and thereby approxim
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1872
