Human anatomy, including structure and development and practical considerations . y of the peritoneum. The traction of a rapidlygrowing subperitoneal lipoma upon the peritoneum, to which it is tightly adherent,is also a factor in the development of a hernial sac, although it does not follow thatthis method of origin is frequent or, as Roser asserted, the usual one (Sultan). The disappearance of fat and connective tissue in emaciation has been thought(Macready) particularly to favor the occurrence of femoral hernia. Other predisposing causes are as follows : Age.—Hernia is very common duringthe
Human anatomy, including structure and development and practical considerations . y of the peritoneum. The traction of a rapidlygrowing subperitoneal lipoma upon the peritoneum, to which it is tightly adherent,is also a factor in the development of a hernial sac, although it does not follow thatthis method of origin is frequent or, as Roser asserted, the usual one (Sultan). The disappearance of fat and connective tissue in emaciation has been thought(Macready) particularly to favor the occurrence of femoral hernia. Other predisposing causes are as follows : Age.—Hernia is very common duringthe first year of life. Its frequency then is probably due to (a) the existence of 1760 HUMAN ANATOMYFig. 1479- Superficial fascia ?i:%ternal olilinue muscle Antrritir su|>erior sjiinc of ilium Deep lavcr of su|wrficial faNcia. cut edtfC Superhcial circumflex iliac artery. Outer |>illar of external rinn Kascia lata Part of deep layer of sii|)erficial fascia Cribrifurni fascia MiJtUe cutaneous nerve External cutaneous nerve Superficial fa> :Superficial fascia, cut —Aponeurosis of external oblique — Linea all>a — Intercolumnar fibres Intercolumnar fascia, artificially distendedInner pillar of external rinj; Uartos, cut eJue Branch of internal cutaneous nerveInternal saphenous vein Superficial dissection of inguinal region ; spermatic cord is seen issuing from externalabdominal ring ; intercolumnar fascia has been artificially distended by injection 01 fluid ;saphenous opening is closed by cribriform fascia. Fig. 1480. External oblicjue. cut edge Internal oblique muscle Aponeurosis of external oblique. cut edge Anterior superior spine of ilium Pouparfs ligament AtUchment of deep layer of sujierficial fascia of abdomen to fascia lata muscle Spermatic cord lata External pillar of external ring, turned down Falciform process of fascia lata Femoral sheath seen through saphenous o^iening Midille cutaneous nerveExternal cutaneous nerve - Inte
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