The practice of surgery . congeni-tum, are liable to hernial protru-sion ; the former found only at thecrural aperture, and always of slow formation (Fig. 180). This formof diverticulum being made at the expense of the main bowel, the caliberof the latter is narrowed thereby ; and the traction caused by hernialdescent also changes the line of direction in the bowel, forming a sharpangle at the origin of the diverticulum. Above the narrowed and some-what obstructed part, dilatation takes place ; and a train of unpleasantsymptoms result, independently of strangulation—costiveness, colickypains,


The practice of surgery . congeni-tum, are liable to hernial protru-sion ; the former found only at thecrural aperture, and always of slow formation (Fig. 180). This formof diverticulum being made at the expense of the main bowel, the caliberof the latter is narrowed thereby ; and the traction caused by hernialdescent also changes the line of direction in the bowel, forming a sharpangle at the origin of the diverticulum. Above the narrowed and some-what obstructed part, dilatation takes place ; and a train of unpleasantsymptoms result, independently of strangulation—costiveness, colickypains, dyspepsia, flatulency, &c. The congenital form of diverticulum,on the other hand, may protrude without causing any such inconveni-ence. Strangulation, occurring in either case, is marked by the ordi-nary symptoms, follows the ordinary course, and requires the ordinarytreatment. But, probably, the symptoms will partake more sparinglyof the signs of obstruction, than in ordinary cases, at least in the Diverticulum of the Intestine. Its protrusion con-stitutes the Hernia Litrica. Littre, Memoires de IAcademie dea Sciences, Paris, 1700. Pott, Chirur^icalWorks,by Earle, vol. ii. Loud. 1808. Scarpa on Hernia, by Wishart, Edin. 1814. Cloquet,Recherches Anatomiquea Bur lea Herniea de 1Abdomen, Paris, 1817. Listen, Memoir onthe Anatomy of Crural Hernia, Edin. 1819. Cooper, A., The Anatomy and SnrgicalTreatment of Abdominal Hernia, by (\ A. Key, Loud. 1827. Key, C. * on the Advan-tages and Practicability of Dividing the Stricture in Strangulated Hernia on the Outside 2 Guthrie, Lancet, No. 1483, p. 114. i Lancet, No. 1276, p. 184. 3 Monthly Journal, March, 1847, p. 695. * See on this subject Brit, and Foreign Med. Rev. Oct. 1842, p. 360. HERNIA LITRICA. 411 of the Sac, Lond. 1833. Mayor, sur la Cure Radicale des Hernies, Paris, 1836. Law-rence, Treatise on Ruptures, Lond, 1838. OBeirne on Defecation; also, on StrangulatedHernia, Dub. Journal of Med. Science, Sept. 1


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