THE MEDIAL MUSCLES OF THE THIGH 



327 



Insertion.—il) The posterior surface of the femur from the level of the third 

 trochanter to the groove for the femoral vessels; (2) the medial epicondyle of the 

 femur and the medial ligament of the stifle joint. 



Action.— To adduct the limb and extend the hip joint. It also rotates the fe- 

 mur inward. 



Structure.—lt is almost entirely fleshy, and is composed of parallel Imndles 



Psoas minor 

 Sartorius [origin. 



Iliopsoas 



Tensor fascice latce 



Rectus femoris 



Semimembranosus 

 Adductor 



Vastus medialis 



Patella 



Middle patellar ligament _ ^ 

 Medial patellar ligavient — -"^^^ 

 Tendon of sartorius {cut) -""^v 



Tendon of gracilis (cut) 

 Tibial insertion of semitendinosus 



Son itendinosus 



Medial head of gastroc- 



\ nemius 



Tibial nerve 



Fig. 288. — Muscles of Pelvis and Thigh of Hohse, Right Side; Medial ^'IE■\v. 

 Figure represents deeper dissection of specimen shown in preceding figure. 

 1, Tendon of insertion of psoas minor; 2, lumbo-sacral plexus; 3, 3', heads of obturator internus; 4, sacro-coccy- 

 geua ventralis; 5, coccygeus; 6, retractor ani (origin); 7, sacro-sciatic Ugament; 8, lesser sciatic foramen; 9, femoral 

 nerve; 10, femoral vessels; 11, 11, pectineus; 12, accessory ligament; 13, external pudic vein; 14, pubis; 15, femoro- 

 patellar joint capsule; 16, distal end of femur; 17, medial meniscus; 18, medial ligament of stifle joint; 19, medial 

 femoro-patellar ligament. 



united rather loosely. It is usually possible to separate from the principal mass a 

 small anterior short part/ which is inserted into the femur behind the pectineus. 

 The principal mass^ is perforated just below the insertion of the pectineus by an 

 opening for the femoral vessels (hiatus adductorius), and is thus divided into two 



1 This has been termed by various authors the adductor parvus or brevis. 



2 Termed by various authors the adductor magnus or longus. 



