192 



THE MUSCLES. 



outer surface of the ramus of the ischium as far as the area for 



the quadratus femoris (Fig. 90, /). 

 The fibres converge to a strong flat 

 tendon. 



Insertion into the proximal por- 

 tion of the bottom of the tro- 

 chanteric fossa. 



Relations. — Ventral sur- 

 face with the adductor fem- 

 oris (Fig. 92, g). Dorsal 

 surface with the pubis 

 and ischium. Caudal 

 border with the quad- 

 ratus femoris (Fig. 



90. /)• 



Action. — Assists 



the iliopsoas. 

 B. Muscles on 

 THE Medial Sur- 

 face OF THE Hti>. — 

 M. obturator internus 

 (Fig. 90, e). — The obtura- 

 tor internus appears as a tri- 

 angular muscle caudad of the ge- 

 mellus superior. 



Fig. 90. — Muscles on the Lateral Side of the 

 Leg, afteu Removal of the Muscles shown in 

 Fig. 68 (Biceps, Tensor fasclI'; lat^, Cauihj- 

 femoralis, and Gluteus maximus). 

 a, M. saitorius; /', M. gluteus niedius; r, M. rectus 

 femoris; d, M. vastus lateralis; e, M. obturator interims; 

 /, M. ^juadratus femoris; g, M. tenuissimus; //, M. ad- 

 ductor femoris; /, M. semimembranosus; /', M. semi- 

 tendinosus; X', M. vastus intermedius; /, M. plantaris; 

 ;«, tn', lit", M. gastrocnemius, outer head (iit, part from 

 the external sesamoid bone; in', from the plantaris; in", 

 from the .superficial fascia); ;/, M. tibialis anterior; c, M. 

 soleus; /, M. extensor longus digit(jruin; </, M. peroneus 

 loiigus; r, M. peroneus tertius (r' its tendon); s, M. 

 peroneus brevis; t, tendon of Achilles; ii, M. extensor 

 brevis digitorum. i, great trochanter of femur; 2, 

 tuberosity of ischium, with cut origin of M. biceps 

 femoris; 3, patella; 4, calcaneus; 5, transverse liga- 

 ments; 6, lateral malleolus. 



