. Surgery, its principles and practice . liding process, forming a type ofhernia characterized by the French as hernie parglissement, or sliding hernia. In these cases the sacis incomplete, being absent posteriorly. IMaydl foimdthe large intestine in 22 of 443 cases, 11 of which werececal. Etiology of Hernia.—Predisposing Causes ofHernia.—In addition to the presence of a funicularsac, or one of pre-natal origin, the following may bementioned among the predisposing causes of hernia:Age, sex, heredity, occupation, obesity, pregnancy,certain constitutional diseases. Age.—In a total of 75,544 case
. Surgery, its principles and practice . liding process, forming a type ofhernia characterized by the French as hernie parglissement, or sliding hernia. In these cases the sacis incomplete, being absent posteriorly. IMaydl foimdthe large intestine in 22 of 443 cases, 11 of which werececal. Etiology of Hernia.—Predisposing Causes ofHernia.—In addition to the presence of a funicularsac, or one of pre-natal origin, the following may bementioned among the predisposing causes of hernia:Age, sex, heredity, occupation, obesity, pregnancy,certain constitutional diseases. Age.—In a total of 75,544 cases observed at theHospital for Ruptured and Crippled from 1890 to1906 inclusive, 25,126 were below fourteen years ofage; 4593 were between fourteen and twenty-one;45,825 were over twentj^-one. Sex.—Of 70,090 cases of hernia 53,009 occurred inmales and 17,081 in females, or per cent, males to per cent,females. Separately considered, we have the following proportion ofmales to females in the different varieties of hernia:. Fig. 12.—Sliding Ce-cal Hernia withHydrocele. 24 HERNIA. Total. in-i---ia {?et.,;;. .v.:1:?M) ?° ^—..nia {;;;.v.:: 2,!??} •« TT ,.,. ,1 ? /Male 2,596 \ 7,218 Umbilical hernia | ^^^^^^ ^1(522 ) Ventral hernia ^ ^^^^^ ^-^ ^ ^^^^ Ventral hernia ^ Female 1,319 / Undescended testis (Usually associated with inguinal hernia) 687 Varicocele 1,368 1,368 Hydrocele / Male 3,926 1 ^ ^gg (Hydrocele) canal of \ Female 160 J Berger,^ in 10,000 cases of hernia observed by him, reports 7433 males and 2534females, or about 75 per cent, of males to 25 per cent, of females. Malgaignes statistics published in 1836, show 2205 males to 564 females; inother words, 80 per cent, of male and 20 per cent, of female patients. McCready* found 18,223 males to 3572 females, which, expressed in percentage,gives 84 males to 16 feinales. It is difficult to understand these marked differences in the ratio ofmales to females, pro Added the facili
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