OSTEOLOGY 



29 



Third phalanx 



Base of phalanx 



Body of phalanx, or shaft 



Pulley of phalanx 



Ungual tuberosity 



Sesamoid bones 



Bones of the lower extremity 



Pelvic girdle 



Hip bone (0. T. os innominatuin) 



Obturator ("closed") foramen 

 Acetabulum ("cup") 

 Fossa of the acetabulum 

 Acetabular notch 

 Lunate surface 

 Paraglenoid grooves 



Ilium, or flank bone 

 Body of ilium 

 Wing of ilium 

 Curved lines 

 Iliac crest 



External lip 



Intermediate line 



Internal lip 



Superior anterior iliac spine 

 Inferior anterior iliac spine 

 Superior posterior iliac spine 

 Inferior posterior iliac spine 

 Anterior gluteal line (O. T. middle 



curved line) 

 Posterior gluteal line (O. T. superior 



curved line) 

 Inferior gluteal line (O. T. inferior 



curved line) 

 Auricular surface 

 Iliac tuberosity 

 Iliac fossa 



Ischium, or bone of the hip 

 Body of ischium 

 Superior ramus of ischium 



Inferior ramus of ischium (O. T. 

 ascending ramus) 



Sciatic tuber (O. T. tuberosity of the 

 ischium) 



Sciatic spine (O. T. spine of the is- 

 chium) 



Greater sciatic notch (O. T. great 

 sacro-sciatic notch) 



Lesser sciatic notch (O. T. lesser 

 sacro-sciatic notch) 



Pubic bone 



Body of pubic bone 



Pecten ("comb") of pubic bone 



Iliopectineal eminence 



Pubic tubercle (O. T. spine of os pubis) 



Obturator crest 



Obturator sulcus 



Anterior obturator tubercle 



Posterior obturator tubercle 



Inferior ramus of pubic bone (O. T. 



descending ramus) 

 Superior ramus of pubic bone (O. T. 



ascending ramus) 

 Symphyseal surface (O. T. symphysis 



pubis) 



Pelvis ("basin") 

 Symphysis of pubic bones 

 Pubic arch 

 Angle of pubis 



Large pelvis (O. T. false pelvis) 

 Small pelvis (O. T. true pelvis) 

 Terminal line 



Sacral part 



Iliac part 



Pubic part 

 Upper opening of lesser pelvis (O. T. 



pelvic inlet) 

 Lower opening of lesser pelvis (O. T. 



pelvic outlet) 

 Axis of pelvis 

 Conjugate diameter 



