Download HIP BONE

HIP BONE - I
LEARNING OBJECTIVES
At the end of the lecture, the student should be able to:
•
•
•
•
•
Enumerate the different parts of the bone.
Discuss side determination.
Discuss muscle attachments.
Discuss ligamentous attachments.
Discuss the different bones articulating with the hip bone.
HIP BONE
Hip bone is a large irregular bone, made of
three parts, namely



ILIUM.
ISCHIUM.
PUBIS.
ACETABULAM
Is formed by the union of



ILIUM.
ISCHIUM.
PUBIS.
SIDE DETERMINATION



Acetabulum: Laterally directed.
Ilium:
 Form upper part of bone.
 It lies above the acetabulum.
Obturator foramen:
 Lies below the acetabulum,
 Bounded anteriorly by the pubis and
 Posteriorly by ischium.
ILIUM

UPPER END:
is called the iliac crest.
 LOWER END:
is fused with the pubis and ischium at the acetabulum.
ILIUM

Borders:
 Anterior,
 Posterior
 And Medial.

Surfaces:
 Gluteal Surface,
 Iliac Surface,
 Sacropelvic Surface.
ILIAC CREST

Curvatures: convex
and concave.
 Anterior end:
 anterior superior iliac spine.
 Posterior end:
 posterior superior iliac spine
ANTERIOR BORDER OF ILIUM


Starts:
 at anterior superior iliac spine and
 runs downwards to acetabulum.
Lower part of the border has an elevated area
called the anterior inferior iliac spine.
POSTERIOR BORDER OF ILIUM

Extends from
 posterior superior iliac spine to the upper end of
the posterior border of ischium.

A prominence below the posterior sup iliac spine is
posterior inferior iliac spine.
ATTACHMENTS OF ILIUM
Iliac crest provides attachment to:
•
•
•
Tensor fascia lata at the outer lip.
External oblique muscle in its anterior two
thirds.
Latissimus dorsi behind the highest point of
the crest.
INNER LIP OF ILIAC CREST
Provides attachment to:
•
•
•
Transversus abdominus in its anterior two thirds.
Fascia transversalis and fascia iliaca in its anterior two thirds, deep to
transversus abdominis.
Quadratus lumborum in its posterior one third with thoracolumber fascia around
it.
INTERMIDIATE AREA OF ILIAC CREST
Gives rise to internal oblique muscle in its anterior two thirds.
Posterior view of the abdominal region illustrating the
internal abdominal oblique muscle and its bony
attachments Both sides of muscle are shown
DORSAL SEGMENT OF ILIAC CREST

Lateral slope gives origin to gluteus
maximus.

Medial slope gives origin to erector
spinae.
DORSAL SEGMENT OF ILIAC CREST
The interosseous and sacroiliac ligaments are also attached to it.
ANTERIOR INFERIOR ILIAC
SPINE
•
•
Gives origin to the straight head of
rectus femoris.
Lower part of spine gives attachment to
the iliofemoral ligament.
POSTERIOR BORDER OF ILIUM


Provides attachment to upper fibers of sacrotuberous ligament.
Origin to a few fibers of piriformis muscle.
REFERENCE
• HUMAN ANATOMY
KLM
6TH EDITION