THIGH AND BUTTOCK. 



Inner Side of Thigh. 



Gracilis. Origin; lower half of edge of symphysis pubis, and 

 similar distance on adjoining part of pubic arch, by a linear 

 origin. Course; downward on inner side of thigh and knee. 

 Insertion; inner side of shaft of tibia, just below inner tuber- 

 osity, behind the Sartorius and above the Semi-tendinosus and 

 separated from their tendons by two bursse. [365] 



Adductor Longus (may be double, or partly fused with 

 Pectineus). Origin; angle between pubic symphysis and crest, 

 by a rounded tendon. Course; connected with origin of Vastus 

 internus by aponeurotic roof of Hunter's canal. Insertion; 

 middle two-fourths of linea aspera. [365] 



Adductor Brevis. Origin; oval surface on body of pubis, 

 surrounded by muscles of this group. Insertion; lower two- 

 thirds of line leading from small trochanter to linea aspera; 

 upper fourth of linea aspera. [366] 



Adductor Magnus. Origin; lower part of outer border of 

 ischial tuberosity and edge of pubic arch. Course; radiating, 

 the upper fibres horizontally and the low r er vertically ; it sepa- 

 rates the adductors and hamstrings. Insertion; space below 

 insertion of Quadratus femoris but above linea aspera; whole 

 length of linea aspera; internal supra-condyloid ridge; femo- 

 ral internal condyle, by a tendon which receives the ischial 

 fibres and is closely connected with the internal lateral liga- 

 ment of the knee. The fibres attached above the linea aspera 

 may form a separate muscle (Adductor minimus). [366] 



Obturator Externus. Origin ; inferior half of margin of thy- 

 roid foramen and corresponding outer surface of obturator 

 membrane. Course ; inward, converging toward great trochan- 

 ter and ending in a tendon which passes below and behind the 

 hip-joint. Insertion ; digital fossa of great trochanter. [367] 



Buttock. 



Gluteus Maximus. Origin; dorsum ilii above superior 

 curved line; tendon of Erector spinae; back of sacrum and 



[275] 



