1174 



SURGICAL AND TOPOGRAPHICAL ANATOMY 



mark of the thigh, forming a l)oiindary of Scarpa's triangle, Hunter's canal, and 

 the popliteal space, can be readily brought into view by the patient's raising his 

 limb. In the middle line the rectus muscle stands out in bold relief, with its 

 tendon of insertion and the patella, when the leg is extended. On either side of 

 this muscle is a furrow, and on either side, again, of this furrow the vasti become 

 prominent. Between the vastus internus and adductor muscles is a depression 

 indicating Hunter's canal. At the upper and inner third of tlie tliigh, if the limb 

 be abducted, the upper part of the adductor longus comes into strong relief. On 



Fig. 739. — The Muscles attached to the Pcbes. (From a dissection in the 



Hniiterian Museum.) 



External otlique 



Bectus abdominis 



Adductor longus 



CORPORA CAVERNOSA 

 Adductor brevis ; 

 below it and exter- 

 nally are adductor 

 magnus and ob- 

 turator externua 



CORPUS SPONGIOSUM 



Accelerator urinae 

 Raphe 



QuadratuB femoris 



Semi-tendinosus 

 and biceps be- 

 low. (The line 

 has by mistake 

 been drawn be- 

 yond the semi- 

 tendinosus to 

 point to the 

 lowest fibres of 

 the adductor 

 magnus.) 



Rectus abdominis 

 Peetineus 



Adductor longus 

 Adductor brevia 



rator externus 

 1 Adductoi magnus 

 Gracilis 

 Erector penis 



Transversus periueei 



Central tendinous point 



Sphincter ani 



the inner side below, a1)0ve the knee-joint, tlie vertical fil>res of the adductor 

 magnus end in a iwwerful tendon coming down to the adductor tul>ercle (tig. 752). 

 This replaces here the internal intermuscular septum, and the insertion of the 

 tendon marks the level of the lower ei)iphysial line of the femur. At tlie outer 

 and Ijack part of the thigh the vastus externus is separated from the l)iceps by a 

 groove wliicli indicates the external intermuscular sei)tum. 



Poupart's ligament. — The abdomen is se]iarated from the thigli l)y 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 liga- 



