Gluteal Region and Thigh

• formed by 2 hip bones.
• Joined in front at pubic symphysis
• Separated behind by the upper part of the sacrum at the sacroiliac joint.

pelvic girdle and sacrum together

• Acetabulum = Deep cup-shaped fossa on the lateral surface near the middle of the hip bone
• Rounded head of the femur

• Triangular gap below and in front of the acetabulum.
• Closed by obturator membrane besides where vessels enter (obturator canal)

Anterosuperior portion of obturator membrane, where the obturator vessels and nerve leave the pelvis and enter the thigh

ilium, ischium, and pubis

at the acetabulum

fan shaped, consists of a body, forms upper part of the acetabulum, and wing or ala, forms the upper, expanded part of the hip bone

• Upper border of the wing that can be palpated in its entire extent.
• Ends anteriorly at the ASIS and POST at the PSIS

faces backwards and laterally marked by