How Many Bones are in the Pelvic Girdle?

The pelvic girdle is made up of three bones: the ischium, the ilium, and the pubic bone.

The pelvic girdle is a bony ring positioned in the lower half of the trunk. It is the structure that links the axial skeleton to the lower limbs. Unlike the pectoral girdle, which allows for more mobility, the pectoral girdle allows for very restricted movement while providing a robust basis for the upper body and supporting body weight.

The pelvic girdle separates the pelvic area into two parts: the upper section is the false pelvis, or bigger pelvis, and the lower part is the smaller pelvis, or real pelvis. The false pelvis is the top portion that contains the small and large intestines. The lower region of the pelvis is known as the true pelvis since it contains pelvic organs such as the urine bladder, internal sex organs, and so on. The Pelvic Inlet divides these two sections; the Pelvic Brim is the outer surface of the Pelvic Inlet. The pelvic outlet marks the lower limit of the smaller pelvis. Females have a wider range.

The female pelvis is designed for foetal growth and birthing, as opposed to the male pelvis.The female pelvis is broader and larger than the male pelvis. When compared to men, the bones are lighter. In females, the pubic arch is wider, whereas in men, it is narrower.

Bones of Pelvic Girdle

• The ilium: The ilium is the pelvis's biggest and most visible portion, like the top of a wing. The ilium articulates with the sacrum to form the pelvic cavity's rear wall. Several muscles, notably the latissimus dorsi and gluteus maximus, connect to the iliac crest, the superior-most region of bone.

• The ischium: The bottom of the "wing" is formed by the ischium, which is placed just under the pubis. The ischium, together with the pubis, creates the obturator canal, the huge hole in the bone. The obturator canal is where the obturator muscles, nerves, and blood vessels attach.

The pubis: The pubis is the pelvic girdle's front component. It is a flattened, irregular-shaped bone that forms a cartilaginous junction with the pubic symphysis.