THE PRINCIPLES OF M VODYNAMICS. 12"] 



(v.) The ill-rotators of the femur are — (i.) 

 The gluteus minimus ; (2.) The gluteus medius ; 

 (3) the tensor vaginae femoris ; (4.) The vastus 

 externus ; (5.) The vastus internus ; (6.) The 

 crureus ; (7.) The rectus femoris ; (8.) The 

 gracilis ; (9.) The semi-membranosus ; (10.) 

 The semi-tendinosus ; (11.) The iliacus ; (12.) 

 The psoas magnus ; (13.) The pectineus ; (14.) 

 The adductors. 



(vi.) The Old-rotators of the femur are^ — (1.) 

 The gluteus minimus ; (2.) The gluteus medius ; 

 (3.) The gluteus maximus ; (4.) The pyriformis ; 

 (5.) The obturator internus and the gemelli ; (6.) 

 The obturator externus ; (7.) The quadratus 

 femoris ; (8.) The biceps cruris ; (9.) The sar- 

 torius ; (10.) The abductors; (11.) The pec- 

 tineus ; (12.) The iliacus ; (13.) The psoas 

 magnus. 



(vii.) The circumductors of the femur are all 

 the muscles that span the hip-joint. 



120. It ought to be especially noted that the 

 origin of the obturator externus is considerably 

 below its insertion, so that this muscle tends — 

 (i.) to prevent the shaft of the femur from going 



