THE GLUTEAL REGION 221 



running along the brim of the pelvis, passing under Poupart's 

 ligament, and inserted by a tendon into the small trochanter; 

 separated by a bursa. 



The common tendon is also separated from the capsule 

 of the hip by a bursa. 



3. M. Psoas Parvus (or Minor). Placed on the surface 

 of the psoas magnus; rises from the bodies of the last dorsal 

 and first lumbar vertebrae and disk between; ends in a flat 

 tendon merged into the iliac fascia and inserted into the ilio- 

 pectineal line and eminence. When present its origin is variable ; 

 was absent on both sides in 40 per cent, of cases. 



THE GLUTEAL REGION 



M. Glutens Maximus. A quadrilateral, very coarse muscle. 

 Origin, posterior fourth of the external lip of the iliac crest and 

 rough surface between it and the posterior gluteal line, back of 

 the last two pieces of the sacrum and first three of the coccyx, 

 great sacrosciatic ligament, and aponeurosis of the erector 

 spinse. 



The upper half and superficial fibers of the lower half are 

 inserted into the fascia lata and continued into the iliotibial 

 band; the deeper portion of the lower half into the gluteal 

 ridge on the upper third of the shaft of the femur. 



Between this and the great trochanter are a multilocular 

 bursa and one or two small ones, another between it and the 

 vastus externus; may be another between it and the tuber 

 ischii. 



M. Glutens Medius. Origin, ilium between the crest, the 

 posterior, and middle curved lines, and from the fascia cover- 

 ing it, and from a band attached to the anterior posterior 

 spine; fibers converge to an oblique impression going downward 

 and forward to insert on the outer surface of the great trochanter; 

 a small bursa between the bone and tendon. There may be 

 a separate tendon to the upper part of the trochanter. 



M. glutens minimus is covered by the preceding, and arises 

 from the whole surface on the ilium between the middle and 

 inferior curved lines, and by a second head from the anterior 

 superior spine; fibers converge into an aponeurotic tendon 

 the outside of the muscle, inserted into an impression on the 



