Arteries of the Lea". 



437 



478. Arteries of the right leg, 



viewed from bcliiud. 



(The muscles of the thigh with the exception of the 



m. adductor magnus have been eonijiletely reraoved ; 



the mm. gastrocnemius, plantaris, soleus and flexor 



haUucis longus have been partially removed.) 



d) A. pcrforaiis secnnda (see Figs. 476 and 477) 



perforates the adductors at the lower margin 

 of the m. adductor brevis; 



e) A. perforaas tertia (see Figs. 476 and 477) 



perforates them somewhat above the hiatus 



tendineus. AU three aa. perforantes supply 



the adductors and the muscles and skin 



of the posterior surface. 



The a. nutricia femoris is usually single and 



given off by the a. perforans II; more rarely it 



is double (superior and inferior) and then comes 



from the aa. perforantes I and III. 



A. poplitea (popliteal artery) (see also 

 Fig. 477) runs downward, from the end of the canalis 

 adductorius on, upon the planum popliteum femoris. 

 upon the capsula articularis of the knee joint, upon 

 the posterior surface of the m. popliteus and in front 

 of the tendinous arch between the origins of the 

 ra. soleus and divides just below the latter into tlie 

 a. tibialis posterior and the a. tibialis anterior. In 

 its course it is covered above by the m. semimembra- 

 nosus; in the popliteal space, behind and somewhat 

 lateralward, by the v. poplitea and (behind this) is over- 

 lapped by the n. tibialis ; below, it is liidden beneath 

 the mm. gastrocnemius and plantaris. Branches: 



1) A. genu superior lateralis (0. T. superior 

 external articular artery) (see also Fig. 479) goes, 

 above the condylus lateralis femoris, dii'ectly upon 

 the bone to the rete articrilarc fiemi. 



2) A. genu superior medialis (0. T. superior 

 internal articular artery), like the preceding, above 

 the condylus medialis femoris. 



3) A. genu media (0. T. azygos articular artery), 

 perforates the capsule above the lig. popliteum obliquum 

 and goes to the ligg. cruciata and to the synovial folds. 



4) A. genu inferior lateralis (0. t. inferior ex- 

 ternal articular artery) (see also Fig. 479) goes, /irectly 

 upon the meniscus lateralis, to the rete articulare r/eim. 



5) A. genu inferior medialiK (0. T. inferior 

 internal articular artery) (see also \Fig. 476) goes, 

 below the condylus medialis tibiae, covered by the 

 lig. collaterale tibiale, to the i^ete articulare (jenu. 



6) Aa. surales, several, sometimes from one 

 trunk, to the m. triceps surae and to the skin. 



A. tibialis posterior (posterior tibial artery) 

 extends downward and medianward upon the posterior 

 surface of the m. tibialis posteriin-, covered above by the 

 m. triceps surae only, below by the m. flexor hallucis 

 longus also. Below, it runs between the tendons of 

 the mm. flexor digitorum longus and flexor hallucis 

 longus upon the deep layer of the fascia cruris and 

 of the lig. laciniatum, curved forward, and divides 

 between the malleolus medialis and the tuber calcanei 

 into the aa. plantares medialis and lateralis. It 

 gives off branches to the muscles and to the skin 

 and, in addition, the following : 



a 



A. poplitea 



A. genu superior 

 lateralis 

 A. gent I superior 

 medialis 



Aa. surales 



A. genu media - - i. 



A. genu inferior \ 

 lateralis ^ 



A. genu inferior 

 medialis 



M. popliteus 



A. recurrens 

 tibialis posterior 



A. tibialis 

 anterior 



Ramus iibularis 



A. tibialis 

 posterior 



A. nutricia tibiae 



M. soleus 



^fi 



A. peronaea 



A. nutricia 

 fibulae 



A. tibialis 

 posterior 



il. flexor 

 hallucis longus 



M. tibialis . . 

 posterior 



M. flexor 

 digitorum longus 



Ramus perforans 



V 



A. malleolaris 

 posterior lateralis 



A. malleolaris 

 posterior medialis 



Ramus 

 communicans 

 Ramus calcaneus 

 medialis 

 R. calcaneus 

 lateralis 



:_i. 



f" 



Rete calcaneum 



-^^- 



