Dislocation on to Pubes 



the shortening is evidently not much an inch or less ; the inversion 

 and flexion are also less, so that now the axis of the knee is only just 

 above the opposite one, the ball of the great toe is scarcely raised, 

 and the great trochanter is but little advanced towards the front of 

 the iliac crest, though still it is above Nelaton's line. 



The head of the femur lies above the tendon of the obturator internus 

 in the high backward 

 dislocation,but below 

 it in the luxation 

 into the notch. In 

 either case, however, 

 the muscle and ten- 

 don may be lacer- 

 ated. If, as the bone 

 travels upwards from 

 the rent in the lower 

 part of capsule, it do 

 not rupture the ob- 

 turator internus, the 

 head may glide upon 

 its pelvic or upon its 

 gluteal surface. If 

 by the latter route, 

 it will rest in the 

 notch, for the tendon 

 over the front of the 

 neck prevents its 

 further ascent, but if 

 it slip in front of the 

 tendon it will reach 

 the dorsum ilii. 



Dislocation on 

 to the pubes is rare. 

 The head of femur is 

 thrust up to the inner 

 side and in front of 

 the Y ligament, and 

 under the iliacus and 

 psoas, causing the 

 common femoral 

 vessels to be much 



advanced and per- Congenital displacement of femora. (BRODHURST.) 



haps arresting their 



circulation. The anterior crural nerve also is stretched. The head is 

 raised about half an inch, and as it is advanced the great trochanter is 

 rolled back and the limb is everted. Thus are presented two of the 



