Ischium

Question 1

Structure

Answer 1

Made up of 3 bones; ilium, ischium and pubis.

United by a Y shaped epiphysis at the acetabulum and fused by age 20-25

Question 2

Location

Answer 2

The area of transition between the trunk and lower limbs.

Question 3

Function

Answer 3

Protects the pelvic organs.
Attachment site for lower limb muscles.
Transfers weight and force between the spine and femurs.

Question 4

Landmarks

Answer 4

Ischial ramus
Ischial tuberosity
Body of ischium (contributes to acetabulum)
Ischial spine
Lesser sciatic notch
Greater sciatic notch
Obturator foramen