40 C. W,. M. Poyntcr 



arrangement. Lipschutz (1915) has made a comparative study of 

 their arrangement and attempted to type them with the same un- 

 happy results that similar efforts in other regions of wide variation 

 have had. Observations have been made by Quain (1844), Srb 

 (i860), Friedlowsky (1861), Gruber (1871), Faucon (1874), 

 Schrutz (1894), Ruge (1894), Adachi (1896), Parsons (1898), 

 Auburton (1905), Bluntschli (1907), Malenooski (1913). 



A. Poplitea 



Senior (1919) concludes that the adult popliteal artery is made 

 up of the proximal part of the primary embryonal vessel, and that 

 in its distal part, in the position superficial to the popliteus muscle, 

 it is formed of a second embryonal vessel which he designates as 

 the superficial popliteal. The popliteal may be very short, divid- 

 ing at the upper border of the muscle, Haller (1752), Miinz 

 (1821), Lauth (1833), Quain (1844), Tiedemann (1846), Hyrtl 

 (1864), Dean (1880), Lane (1887), Robineau (1897), Farrari 

 (1903), Dubrueil (1905). Quain (1844) found the artery double 

 10 times in 227, but did not think that it could be double above the 

 joint; see Dean (1880), Collins (1886), Mackay (1889). and 

 Croft (1861) for double artery proximally. 



Robinson (1898) reports two cases in which the anterior tibial 

 passed in front of the popliteus muscle, and a case by Green (1830) 

 seems to be similar. The artery may be irregular in its coiirse, 

 passing through the inner head of the gastrocnemius, Labatt 

 (1837), Croft (1861), Francois Franck (1873), Terrier (1873), 

 Stuart (1878), Davidson (1890). It may pass behind the vein. 

 Fere (1878). All of the terminal branches may be given off from 

 a single point, Withers (1890). Otto (1824) reported a large 

 branch which passed upward to anastomose with the last perforat- 

 ing artery. 



A. Tibialis Anterior 



The artery may take a course around the lateral side of the fibula 

 and follow the lateral aspect of the leg, Velpeau (1839), Quain 

 (1844), Hyrtl (1864), Streets (1872), Baudet (1907). It may 

 be lacking. Burns (1809), Otto (1830), Dubrueil (1847) J oi" m^y 

 fail to join the dorsalis pedis, Nelaton (1834), Quain (1844), 

 Dubrueil (1847), Fano (1848), Gerard (1900). 



