Lecture 17- Bony Pelvis and Hip Flashcards
link between the lower limbs and the axial skeleton
The pelvic girdle
The hipbone is the result of fusion from what three bones?
- ilium
- ischium
- pubis
what 4 bones make up the pelvic girdle?
2 coxal bones (form pelvic walls)
sacrum and coccyx (form the posterior wall)
The head of the femur articulates with the _____.
acetabular cup
where do the 3 bones of the hip bone fuse?
acetabular cup
upper part of the hip bone that forms the upper part of the acetabulum
ilium
forms the posteo-inferior part of the hipbone and acetabulum
ischium
forms the anteromedial part of the hipbone and the acetabulum
pubis
the coxal bone can be divided into two grossly observed portions, the ____ and ____.
true or lesser pelvis
false or greater pelvis
what does the femur articulate with SUPERIORLY?
Coxal bone
what does the femur articulate with INFERIORLY?
patella and the tibia
the longest and strongest bone on the body
FEMUR
The neck of the femur presents at an angle called the _____.
angle of inclination
how many degrees is the angle of inclination?
125 degrees
joint that attaches the pelvic girdle to the axial skeleton
lumbrosacal joint
strong synovial joint formed by the articular surface of the sacrum and the iliac bone
sacroiliac (SI) joint
6 ligaments that support the sacroiliac joint
- posterior ligament
- interosseous sacroiliac ligament
- anterior sacroiliac ligament
- iliolumbar ligament
- sacrotuberous ligament
- sacrospinous ligament
ligament assisting in stabilizing the SI joint that runs between the transverse processes of the 3rd and 4th lumbar vertebrae and the posterior portion of the iliac crest
iliolumbar ligament
SI accessory ligament from the lateral part of the sacrum and coccyx and the posterior inferior iliac spine to the ischial tuberosity
sacrotuberous ligament
SI accessory ligament from the lateral part of the sacrum and coccyx to the ischial spine
sacrospinous ligament
ligaments that convert the greater and lesser sciatic notches into the greater and lesser sciatic foramina
sacrospinous ligament and sacrotuberous ligament
this muscle exits out of the pelvis through the greater sciatic foramen
piriformis muscle
what exits ABOVE THE PIRIFORMIS through the greater sciatic foramen?
SUPERIOR gluteal nerves and vessels
things that exit through the greater sciatic foramen BELOW THE PIRIFORMIS (7)
INFERIOR gluteal nerves and vessels internal pudendal vessels pudendal nerve sciatic nerve posterior femoral cutaneous nerve nerve to obturator internus nerve to quadratus femoris
boundaries of the greater sciatic foramen
rim of the great sciatic notch (anterosuperior)
sacrotuberous ligament (posteromedial)
sacrospinous ligament and ischial spine (inferior)
boundaries of the lesser sciatic foramen
body of ischial tuberosity (anterior)
ischial spine and sacrospinous ligament (superior)
sacrotuberous ligament (posterior)
the tendon of the obturator internus EXITS the pelvis via _______.
the lesser sciatic foramen