Anatomy Notes on the Hip
Exam 3
Hip and Thigh
Anatomy of the Hip
Hip and pelvic region are not synonymous * Hip is articulation of femur with pelvis * Pelvis consists of sacrum, coccyx, and 2 large hipbones on either side. * Hip bones are called innominates * have a right and left * pelvis and innominates protect reproductive organs * also part of birth canal * Serves as a stable platform * Supports the body weight * Links the sacrum with weight transmission into lower extremities * ** females have lighter, thinner and smoother bones than males in hip and pelvic region * more flared than males (bigger butts)
Innominates
Consists at birth of 3 separate bones joined by hyaline cartilage 1. ilium 2. ischium 3. pubis
Ilium
Largest bones of innominate * posterior known as ala or wings * anterior known as iliac fossa lot of muscular attachment onto the iliac fossa
** bones are also more flared in girls * broader/wider hips
Iliac Crest- thickened superior ridge * serves as muscular attachment * common contact injuries – hip pointers
Spines of the Ilium * anterior superior iliac spine (ASIS) * anterior inferior iliac spine (AIIS) * posterior superior iliac spine (PSIS) * posterior inferior iliac spine (PIIS) other structures on ilium-
Greater Sciatic Notch – deep indentation inferior to PIIS (layer 1)
Auricular surface – large roughened region on iliac fossa (layer 1) * articulates with sacrum to form sacroiliac SI joint * iliacus m. originates on iliac fossa
Ischium
Lower part of innominate and marked by several structures
Ischial Spine – between the great and lesser sciatic notches * attachment for sacrospinous ligament * physician will measure to determine pelvic outlet
** farther apart in females * too small, what happens? * Women will have a C-section during birth
Lesser sciatic notch – indentation below
Hip and Thigh
Anatomy of the Hip
Hip and pelvic region are not synonymous * Hip is articulation of femur with pelvis * Pelvis consists of sacrum, coccyx, and 2 large hipbones on either side. * Hip bones are called innominates * have a right and left * pelvis and innominates protect reproductive organs * also part of birth canal * Serves as a stable platform * Supports the body weight * Links the sacrum with weight transmission into lower extremities * ** females have lighter, thinner and smoother bones than males in hip and pelvic region * more flared than males (bigger butts)
Innominates
Consists at birth of 3 separate bones joined by hyaline cartilage 1. ilium 2. ischium 3. pubis
Ilium
Largest bones of innominate * posterior known as ala or wings * anterior known as iliac fossa lot of muscular attachment onto the iliac fossa
** bones are also more flared in girls * broader/wider hips
Iliac Crest- thickened superior ridge * serves as muscular attachment * common contact injuries – hip pointers
Spines of the Ilium * anterior superior iliac spine (ASIS) * anterior inferior iliac spine (AIIS) * posterior superior iliac spine (PSIS) * posterior inferior iliac spine (PIIS) other structures on ilium-
Greater Sciatic Notch – deep indentation inferior to PIIS (layer 1)
Auricular surface – large roughened region on iliac fossa (layer 1) * articulates with sacrum to form sacroiliac SI joint * iliacus m. originates on iliac fossa
Ischium
Lower part of innominate and marked by several structures
Ischial Spine – between the great and lesser sciatic notches * attachment for sacrospinous ligament * physician will measure to determine pelvic outlet
** farther apart in females * too small, what happens? * Women will have a C-section during birth
Lesser sciatic notch – indentation below