GLUTEAL REGION 279 



GLUTEAL REGION. 



In the gluteal region the following parts will be displayed 

 in the course of the dissection : 



1. Superficial fascia. 



2. Cutaneous nerves and blood-vessels. 



3. Deep fascia. 



'Glutseus maximus (and after this has been reflected), 

 Three mucous bursse. 

 The glutseus medius and minimus. 



The two gemelli muscles and the tendon of the obturator internus. 

 Tendon of the obturator externus. 

 Proximal border of the adductor magnus. 

 The origin of the hamstrings from the ischial tuberosity. 

 ^The proximal part of the vastus lateralis. 

 5. The sacro-tuberous ligament. (O.T. great sciatic lig.) 



f Superior gluteal. 



f- A . Inferior gluteal (O.T. sciatic). 



es ' ' 1 1nternal pudenda!. 



V Medial femoral circumflex. 

 Superior gluteal. 

 Sciatic. 

 Posterior cutaneous of the thigh. 



7. Nerves 



Pudendal. 

 Nerve to obturator internus. 

 Nerve to quadratus femoris. 

 Inferior gluteal. 



Supposing that two days are allowed for the above dissection, the first 

 day's work should consist of (i) the dissection of the parts superficial to 

 the glutseus maximus ; (2) the cleaning and reflecting of that muscle ; (3) 

 the tracing and defining of the various nerves and blood-vessels which enter 

 its deep surface. On the second day the parts which are exposed by the 

 reflection of the glutseus maximus should be dissected. 



Surface Anatomy. Before the skin is reflected the surface 

 markings of the gluteal region must be examined. On each 

 side the prominence of the nates forms a round, smooth 

 elevation. Inferiorly the nates are separated, in the middle 

 line, by a deep fissure the natal cleft. The cleft can be 

 traced upwards over the coccyx to the level of the lower 

 part of the sacrum where it disappears. The crest of 

 the ilium can be felt along its whole length, and in the 

 well -formed male its position is indicated by a groove 

 the iliac furrow. The anterior end of the crest terminates 

 in the anterior superior spine of the ilium; the posterior 

 end is the posterior superior spine of the ilium. The 

 position of the latter is indicated by a faint depression or 

 dimple which lies on a level with the second spine of the 

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