Regional and surgical anatomy of the human body / A. Velpeau.

  • Alfred-Armand-Louis-Marie Velpeau
Date:
[1829?]
Catalogue details

Licence: Public Domain Mark

Credit: Regional and surgical anatomy of the human body / A. Velpeau. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    SUPERFICIAL FASCIA APONEUROSIS. abscess does not take place here, or, should it occur, the tumor is small and circumscribed, which is the reverse of the preceding. Laterally, it consists of a great mass continuous with the Superficial fascia of the buttock, passing anterior to the glutams maximus, and filling that large triangular excavation between tlie two fibrous folds which cover the perinseal surface of the levator ani muscle on the one hand, and that which separates the internal obturator muscle from the perinseum on the other. It is here, particularly, that soft and sometimes reddish fat is found : it is cellular, has its filaments running in all directions, and is elastic. This adipose texture appears to be merely a dege- neration of the perinseal fascia; whether this be the case or not, it is here that phlegmonous abscesses in the neighbourhood of the anus are formed, or those faeculent abscesses which precede the formation of fistulae; in the lateral and transverse sections of lithotomy and all its varieties, it is here we always find uri- nary abscesses or infiltrations ; the fluid burrows from one side to the other, between the rectum, coccyx, and posterior prolonga- tion of the sphincter muscle, and between the anterior prolonga- tion of the transversalis perinaei, the bulb, and membranous portion of urethra, and before the rectum ; so that pus readily passes from the right to the left side. 3. APONEUROSIS. This membrane, formerly described by Camper and other anatomists, and in 1811, by Mr. Colles, with much more pre- cision, has been very lately made the object of some interest- ing researches by Carcassone and Bouvier : the structure is very intricate, and, in order to understand it, we must have recourse to the dead subject: you should first examine it in the false perinceum, and then proceed to the true. In the false perinseum, there are two laminse; one of these covers the perinsea] surface of the levator ani muscle, and so pro- ceeds as far forwards as the transversus perinsei muscle; poste- riorly, somewhat before the coccyx, and a little above the exter- nal sphincter, where it degenerates outwards, and is lost in the superficial fascia: the other, which is attached to the free sur- face of the obturator internus muscle, becomes continuous infe- worly, with the internal edge of the great sacro-sciatic ligament and its falciform production. Anteriorly, superiorly, and posteriorly,itappearsacontinuation oi that lamina which we have just described as attached to the perinseal surface of the levator ani; so that a very remarkiihle triangular space is formed by their opposed surfaces, being separated and representing two inclined planes: the one (the obturator portion) proceeds from below upwards, and from 'Withoutinwards; the other (the levator ani portion) also, from