Muscles of the Leer, 



333 



378. Muscles of the 

 right thigh, 



viewed from in front. 



(The nmi. sartorius, tensor fasciae 

 latae, pectineus and oTacilis have 

 been removed; the knee joint has 

 been opened on tlie medial side.) 



M. (quadriceps feinoris, consists 

 of four muscles, which are more or 

 less distinctly separated above, but 

 inseparably united at their insertion: 

 m. rectus femoris, in. vastus late- 

 ralis , m. vastus intermedins and 

 m. vastus medialis. 



M. rectus femoris (see also Fij^-s. 

 376 and 377). Form: spindle-shaped, 

 thick, penniform. Position: on the 

 anterior surface of the thigh, covered 

 above by the m. sartorius, otherwise 

 superficial. Origin: tendinous, part- 

 ly from the sphia iliaca anterior in- 

 ferior, partly arch-like above the ace- 

 tabulum (bursa m. recti femoris see 

 Fig. 379). Insert. : the fibers diverge 

 from the middle downward, where its 

 flat tendon goes over above the patella 

 into the conunon tendon. Action: 

 it flexes the thigh and extends the 

 leg. 1 n n e r v a t i o n : n . fem orahs . 



M. adductor longus (see also 

 Figs. 376 and 377). Form: flat, 

 oblong-triangular, thick. Position: 

 on the anterior surface of the thigh, 

 bounded laterally by the m. pectineus, 

 medianly by the m. gracLUs, behind 

 by the ram. adductores brevis et mag- 

 nns ; in front, below , it is covered 

 by the m. sartorius. Origin: by 

 a thick tendon from the anterior 

 surface of the ramus superior oss. 

 pubis. Insertion: di vergmg down- 

 ward and lateralward to the labium 

 mediale of the Unea aspera femoris. 

 Action: it adducts and flexes the 

 thigh and rotates it outward. Inner- 

 V a t i n : ramus anterior n.obturatorii. 



Bursa iliaca subtendiuea, very 

 frequently present, between the m. 

 iliopsoas and the trochanter minor. 



Bursa m. pectinei, very fre- 

 'juently jiresent, between the m. pecti- 

 neus and m. iliopsoas, just below 

 the trochanter miuoi'. 



Bursa m. sartorii propria (sc 

 also Fig. 377), between the tendon 

 of the m. sartorius and the tendons 

 of the mm. gracilis and semimembra- 

 nosus ; not rarely connected with the 



Bursa auserina, constant, large, 

 between the tendons of the mm. graci- 

 lis and semitendinosus and the tibia. 

 Spaltebolz, Atlas. 



- --- Spina iliaca anterior superior 



Spiua iliaca anterior inferior 



!M. rectus femoris (cut away) 

 M. pectineus 



...Ligamentum 

 iliofemorale 



-il. obturator 

 extern us 



Bui-sa iliaca 



subtendinea 

 __M. iliopsoas 

 (cut aw'ay) 



Bursa ni. pectinei 



yi. adductor longus 

 M. adductor magnus 



Hiatus tendineus 

 [adductorius] 



-- M. semimembranosus 

 _- M. vastus intermcdius 



^. ]\I. vastus lateralis 



Tendo m. recti femoris 

 (cut away) 



>I. vastus medialis 



Patella 



Ligamentum 

 patellae 



1 Kctinaculum 

 I patellae mediale 



._ Meniscus medialis 



Ligamentum 



collaterale tibiale 



Hill, gi-acilis et semi- 



teudinosus (cut away) 



. Bursa anserina 



M. sartorius 

 (cut away) 

 .. Bursa m. sartorii 

 propria 



22 



