1438 



CLINICAL AND TOPOGRAPHICAL ANATOMY 



The inguinal (Poupart's) ligament. — The abdomen is separated from the 

 thigh by a fold, best marked in flexion — the inguinal furrow. In this, pressure 

 detects the meeting of the aponeurosis of the external oblique and the fascia lata, 

 i. e., Poupart's ligament, extending between the anterior superior spine of the ilium 

 and the tubercle (spine) of the pubes. The line representing it should be drawn 

 slightly convex downward, omng to the attachment of the deep fascia. It forms 

 the base of the femoral trigone; its medial attachment blends with the triangular 

 lacunar (Gimbernat's) ligament. The parts passing under the inguinal ligament 

 and their arrangement have been given at p. 1399, fig. 1122. 



Fig. 1156. — Diagram of Arteries op Thigh. 



Ilio-lumbar artery 



Deep circumflex iliac, anastomosing 

 with ilio-lumbar of internal iliac 



Common femoral 



Deep femoral (profunda) 

 Descending branch of lateral circumflex 



Popliteal 



Superior lateral articular, anastomosing 

 with lateral circumflex, etc. 



Inferior lateral articular 



Posterior tibial recurrent (from 



anterior tibial) 



Anterior tibial recurrent 



Superior fibular 



Anterior tibial 



Common iliac artery 



Inferior epigastric 

 Hypogastric, dividing into anterior 

 and posterior trunks 



External iliac 

 Obturator 

 Inferior gluteal 

 Internal pudic 



Lower terminal branch of medial 



circumflex 

 Superficial femoral (muscular 

 branches omitted) 



Perforating branches of deep femoral, 

 forming anastomotic loops and sup- 

 plying posterior muscles 



Genu suprema 



Popliteal, giving off superior 

 muscular branches 



Superior medial articular 



Inferior medial articular (sural arteries 



arising below this omitted) 

 Posterior tibial 



The femoral trigone (Scarpa's triangle) (fig. 1159).— Immediately below the 

 inguinal ligament a hollow is seen correspontling to this region, the lateral and 

 medial boundaries of which are brought into view when the limb is raised, the 

 adductor longus especially when the limb is al^ducted, and the sartorius when the 

 thigh is flexed and the limb extended and rotated laterally. The floor of the 

 femoral trigone is not horizontal, the plane of the medial part being verv oblique. 

 It IS formed latero-mcdially by the ilio-psoas, pectineus, adductor brevis (slightly), 

 and adductor longus. 



A psoas abscess dosccndinK hclow tho in>;uinal liKJuncnt usually does so on the lateral aspect 

 ol thefcinoral vessels; if the slieath Kives way, or if the abscess follows the profunda artery, it 

 will pass beneath the adductor longus and point toward the medial side of the thigh. (Taylor.) 



