6-16 MR. AV. F. R. WELDON ON THE [DcC. 18, 



16. The ^exor perforatus et perforans arises by two heads — one 

 from the outer condyle of the femur, just distal to the outer head 

 of the gastrocnemius, and one from the fascia over the peroneus 

 longus: the two heads are connected by a tendinous intersection. 

 The two heads give rise to two separate tendons, which pass the ankle- 

 joint on the inner side of the leg, just below the tendo Achiliis. 

 They supply the second and third digits. 



17. The flexor perforatus arises from the femur by a flat tendon 

 from the inner condyle, and by a fleshy head from the outer : these 

 heads unite to form a fleshy belly, which receives two slips from the 

 flexor perforatus et perforans. After receiving these slips the muscle 

 splits into three tendons, which at the annular ligament are internal 

 to the tendons of the flexor last described, and superficial to those of 

 the flexor profundus. 



18t The flexor profundus arises from the whole length of the 

 fibula and the adjacent parts of the tibia. Above, the tibial and 

 fibular portions are more or less distinctly separable ; and further 

 down the belly the separation is continued by a tendinous raphe. 

 There is a single tendon, which passes through the annular ligament 

 below all the others. 



19. The ^e.ror longus pollicis has the typical arrangement called 

 "ciconine" by Garrod. 



20. The peroneus longus arises from the crest of the tibia and 

 from the fascia covering the tibialis auticus ; also from the fascia 

 between itself and the head of the gastrocnemius. All these origins 

 are fleshy. A broad, flat tendon passes to the outside of the leg, at 

 the ankle, through a special groove in the outer malleolus of the 

 tibic-tarsus, joining the teudon of the flexor perforatus about a third 

 of the way down the tarso-metatarse. Just before passing the ankle- 

 joint the tendon gives ofl^ a broad flat ligament to the tibia. 



There is no peroneus brevis. 



21. The tibialis anticus arises from the outer condyle of the femur, 

 from the upper and outer side of the cnernial crest of the tibia, and 

 from the aponeurosis covering the extensor communis digitorum. 

 The tendon passes superficially through the anterior annular ligament, 

 and is inserted into a pit in the tarso-metatarsus about an inch below 

 the joint. 



22. The extensor communis digitorum has a fleshy triangular origin 

 from the inner border of the anterior face of the tibia for about five 

 inches : its tendon is first beneath, then internal to that of the 

 tibialis anticus, and supplies the second, third, and fourth digits, 

 but not the thumb. 



23. The plantaris arises from the inner side of the posterior surface 

 of the tibia for about an inch ; its belly is very small ; and its long 

 slender tendon is inserted into the deep surface of the annular ligament. 



24. There are two poplitei. 



The short muscles of the foot are an abductor, au abductor indicis, 

 a small flexor of the middle finger, and an abductor minimi digiti, 

 on the dorsal side : on the ventral side are a short flexor of the 

 hallux, and a short flexor of the second toe. 



