All Topics  
Hip bone

 

 
   Email Print
   Bookmark   Link
 

 

Hip bone
 
 
  Topics Hip bone Topic Home

The hip bone, innominate bone or coxal bone is a large, flattened, irregularly shaped bone, constricted in the center and expanded above and below. It has one of the few ball and socket synovial joints in the body – the so called hip joint.

It meets its fellow on the opposite side in the middle line in front, and together they form the sides and anterior wall of the pelvic cavity
Pelvic cavity

The pelvic cavity is a body cavity that is bounded by the bones of the pelvis and which primarily contains reproductive organs, the urinary bladder, and the rectum....
.

Together with the sacrum
Sacrum

The sacrum is a large, triangular bone at the base of the vertebral column and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones....
 and coccyx
Coccyx

The coccyx , commonly referred to as the tailbone, is the final segment of the human spine . Comprising three to five separate or fused vertebrae below the sacrum, it is attached to the sacrum by a fibrocartilaginous joint, the sacrococcygeal symphysis, which permits limited movement between the sacrum and the coccyx....
, it comprises the pelvis
Pelvis

The pelvis or pelvic girdle is the irregular bone structure located at the base of the spine . In the adult human, it is formed by the sacrum and the coccyx, the caudal part of the axial skeleton, and a pair of hip bones, part of the appendicular skeleton or human leg....
.








Discussion
Ask a question about 'Hip bone'
Start a new discussion about 'Hip bone'
Answer questions from other users
Full Discussion Forum



Encyclopedia


The hip bone, innominate bone or coxal bone is a large, flattened, irregularly shaped bone, constricted in the center and expanded above and below. It has one of the few ball and socket synovial joints in the body – the so called hip joint.

It meets its fellow on the opposite side in the middle line in front, and together they form the sides and anterior wall of the pelvic cavity
Pelvic cavity

The pelvic cavity is a body cavity that is bounded by the bones of the pelvis and which primarily contains reproductive organs, the urinary bladder, and the rectum....
.

Together with the sacrum
Sacrum

The sacrum is a large, triangular bone at the base of the vertebral column and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones....
 and coccyx
Coccyx

The coccyx , commonly referred to as the tailbone, is the final segment of the human spine . Comprising three to five separate or fused vertebrae below the sacrum, it is attached to the sacrum by a fibrocartilaginous joint, the sacrococcygeal symphysis, which permits limited movement between the sacrum and the coccyx....
, it comprises the pelvis
Pelvis

The pelvis or pelvic girdle is the irregular bone structure located at the base of the spine . In the adult human, it is formed by the sacrum and the coccyx, the caudal part of the axial skeleton, and a pair of hip bones, part of the appendicular skeleton or human leg....
.

Components

It consists of three parts, the ilium
Ilium (bone)

The ilium is the uppermost and largest bone of the pelvis, and appears in most vertebrates including mammals and birds, but not bony fish. All reptiles have an ilium except snakes, although some snake species have a tiny bone which is considered to be an ilium....
, ischium, and pubis
Pubis (bone)

The android pubic bone is the ventral and anterior of the three principal bones composing either half of the pelvis.It is covered by a layer of fat, which is covered by the mons pubis....
, which are distinct from each other in the young subject, but are fused in the adult; the union of the three parts takes place in and around a large cup-shaped articular cavity, the acetabulum
Acetabulum

The acetabulum is a :wikt:concave surface of the pelvis. The femur head meets with the pelvis at the acetabulum, forming the hip joint....
, which is situated near the middle of the outer surface of the bone.

  • The ilium, so-called because it supports the flank, is the superior broad and expanded portion which extends upward from the acetabulum.


  • The ischium is the lowest and strongest portion of the bone; it proceeds downward from the acetabulum, expands into a large tuberosity, and then, curving forward, forms, with the pubis, a large aperture, the obturator foramen
    Obturator foramen

    The obturator foramen is the hole created by the ischium and pubis bones of the pelvis through which nerves and muscles pass....
    .


  • The pubis extends medially and inferiorly from the acetabulum and articulates in the midsagittal plane at the pubic symphysis, with the bone of the opposite side: it forms the front of the pelvis and supports the external organs of reproduction.


Additional images


External links