Fig. i68. Inguinal Region, 3rd Layer. Spermatic Cord. SCARPA'S 



Triangle. 



Male, aged ^J. The Fascia Lata and tlie Lymphatics of t/ie Groin have been 

 removed. The Aponeurosis of the Exter>ial Abdominal Oblique Muscle (and 

 the External Abdominal Ring) has been slit np and the chief constituents of 



the Spermatic Cord dissected out. 



When the Fascia Lata which stretches across the Inguinal Region has 

 been removed, a triangular space with its base directed upwards, and its apex 

 downwards — Scarpa's Triangle — is exposed. The upper boundary of this 

 area is PouPART's Ligament; the internal, Adductor Longus Muscle, which arising 

 from the bone below the Pubic Spine, runs outwards and downwards, to be 

 inserted into the middle third of the middle lip of the Linea Aspera ; the external, 

 Sartorius Muscle, which arising below the Antero-Superior Spine of the Ilium 

 descends obliquely inwards and downwards, over the Internal Condyle of the 

 Femur, to be inserted on the inner surface of the Tibia as far down as the Crest 

 of the Tibia. 



In this Triangle, the Anterior Crural Nerve and the main vessels are 

 exposed. The Femoral Artery lies directly under Poupart's Ligament, at the 

 mid-point between the Anterior Superior Iliac Spine, and the Symphysis Pubis, 

 and passes almost vertically downwards. At the ligament, the Femoral Artery 

 can be readily compressed by digital pressure against the horizontal ramus of the 

 Pubis. In Scarpa's Triangle, the Femoral Artery gives off posteriorly, the Deep 

 Femoral Artery, apart from the smaller branches, Fig. 167 — Superficial Epigastric, 

 Superficial External Pudic and Superficial Circumflex Iliac Arteries — . As the 

 Deep Femoral Artery is a branch of large size, tliere occurs at its origin, i V2 inch 

 below Poupart's Ligament, a sudden diminution in the calibre of the Superficial 

 Femoral Artery. 



The Femoral Vein lies to the inner side of the Artery and is enclosed in 

 its sheath, but soon passes behind the Artery. This Vein receives the Long 

 Saphenous Vein, which passes over the margin of the Fascia (see Fig. 167). 

 Internal to the Vein, is situated the Crural Ring (see Fig. 170). The space 

 below the ring. — between the Adductor Longus, P'emoral Vein, and Pectineus 

 Muscle — is filled up with fat and deep lymphatic glands. The Anterior Crural 

 Nerve appears in the Muscular Compartment under Poupart's Ligament, and 

 lies about -/f,ths inch external to the Artery in Scarpa's Triangle. This nerve 

 disappears under cover of the Sartorius Muscle and divides into branches which 

 supply the skin on the Anterior Aspect of the thigh, the Sartorius and the 

 Quadriceps Extensor. Deep to the Vessels and the Nerve lie the Ilio-Psoas and 

 Pectineus Muscles. 



At the Apex of Scarpa's Triangle, the Sartorius passes obliquely over 

 the vessels. This muscle has, therefore, to be drawn aside in order to expose the 

 further course of both Artery and Vein. 



The figure also shews the constituents of the Spermatic Cord : Vas Deferens 

 with the Vessels to the ^"as, Spermatic Artery and the Pampiniform Plexus of 

 Veins, Cremasteric Vessels to the coverings of the Cords. 



The Cremasteric Vein is of importance because it alwa3's communicates 

 with the Pampiniform Plexus, though it opens into the Deep Epigastric \^ein 

 (Collateral Venous Channel). 



