Bony pelvic wall and pelvic cavity
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Bony Pelvic Wall and Pelvic Cavity. Dr. Sama-ul-Haque. Objectives. Name the structures of the pelvic wall (hip, sacrum, muscles and fascia). Identify the general features of the hip and sacrum. Compare between the male and female hip & sacrum.

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Bony Pelvic Wall and Pelvic Cavity

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Bony Pelvic Wall andPelvic Cavity

Dr. Sama-ul-Haque


Objectives

  • Name the structures of the pelvic wall (hip, sacrum, muscles and fascia).

  • Identify the general features of the hip and sacrum.

  • Compare between the male and female hip & sacrum.

  • Recognize the name, type, ligaments & articular surfaces of joints between them.

  • Describe the anatomy of the pelvic cavity (inlet, outlet, content).

  • Discuss the general organization of the pelvic organs in male & female.

  • Describe the peritoneal relations of the pelvic organs.


Bony Pelvis

  • Hip bone (Ilium, ischium and pubis)

  • Sacrum

  • Coccyx

  • Joined anteriorly by pubic Symphysis

  • Posteriorly by sacro-iliac joint


Hip Bone


Hip Bone


Sacrum


Sacrum


Sacrum


Bony Pelvis


  • The pelvic inlet or brim of the true pelvis is bounded:

  • Anteriorly:Symphysis pubis,

  • Laterally: Iliopectineal lines

  • Posteriorly: Sacral promontory.

  • The pelvic outlet of the true pelvis bounded:

  • Anteriorly: : pubic arch

  • Laterally:ischialtuberosities

  • Posteriorly: Coccyx

  • The sacrotuberous ligaments also form part of the margin of the outlet.


Pelvic Inlet and Outlet


  • The pelvic cavity is the space between the inlet and the outlet. It is a short, curved canal, with a shallow anterior wall and a much deeper posterior wall.

  • The axis of the pelvis is an imaginary line joining the central points of the anteroposterior diameters from the inlet to the outlet and is the curved course taken by the baby's head as it descends through the pelvis during childbirth.


Pelvic Inlet and Outlet


Superior Aperture or Pelvic Inlet


Inferior Pelvic Border or Pelvic Outlet


Pelvic Diameter


Difference Between Male & Female Bony PelvisBony Pelvis Male Female


Difference Between Male & Female Bony Pelvis


Difference Between Male & Female Bony Pelvis


Types of Pelvis


Types of Pelvis


Joints & ligaments of the Bony Pelvis


Joints & ligaments of the Bony Pelvis


Bony Pelvis


Female Pelvis


Male Pelvis


Pelvis


Greater Pelvis (pelvis major)

  • Location of some abdominal viscera (ileum and sigmoid colon)

  • Bounded by abdominal wall anteriorly, the iliac fossa posteriolaterally and L5 & S1 vertebrae posteriorly

  • Also Known as False Pelvis


Lesser Pelvis ( pelvis minor)

  • Location of pelvic viscera: the urinary bladder and reproductive organs such as the uterus and ovaries

  • Bounded by the pelvic surfaces of the hip bones, sacrum, and coccyx

  • Limited inferiorly by the musculofascial pelvic diaphragm

  • Also known as True Pelvis


Peritoneum in Pelvis

  • Continuous with peritoneum of abdomen

  • Drapes over pelvic viscera in the midline to form:

  • Pouches

  • Folds between viscera and pelvic walls


Peritoneum in males


Peritoneum in females


Peritoneum in males


Thank you


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