424 



liatt 17. 



THE LOWER EXTREMITY. 



CHAPTER XIX. 



THE REGION OF THE HIP. 



THIS region will be considered under the following 

 heads : 1. The buttocks. 2. The region of Scarpa's 

 triangle. 3. The hip joint. 4. The upper third of 

 the femur. 



1. The buttocks. Surface anatomy. The 

 bony points about the gluteal region can be well 

 made out. The crest of the ilium is distinct, as is also 

 the anterior superior spine. The posterior superior 

 spine is less evident, but can be readily felt by follow- 

 ing the crest to its posterior termination. This spine 

 is on a level with the second sacral spine, and is 

 placed just behind the centre of the sacro-iliac articu- 

 lation. The great trochanter is a conspicuous land- 

 mark. It is covered by the fascial insertion of the 

 glutens maximus. Its upper border is on a level with 

 the centre of the hip joint, and is somewhat obscured 

 by the tendon of the gluteus medius which passes over 

 it. The comparatively slight prominence of the tro- 

 chanl.er in the living subject, as compared with the great 

 projection it forms in the skeleton, depends upon the 

 completeness with which the gluteus medius and 

 minimus fill up the hollow between the trochanter and 

 the ilium. When these muscles are atrophied the 

 process becomes very conspicuous. In fat individuals 



