Define pelvic girdle.

The pelvic girdle, also known as the hip girdle or pelvic bone, is a ring of bones that connects the vertebral column to the lower limbs. It consists of the two hip bones, sacrum, and coccyx. The pelvic girdle provides support and stability to the spine and pelvis, and serves as a point of attachment for muscles and ligaments that help with movement and weight-bearing.

Pelvic Girdle

The pelvic girdle is a pair of connected bones that form the bony pelvis. It is composed of three pairs of bones:

- Ilium: The largest and uppermost bone of the pelvis, forming the iliac crest.
- Ischium: The lower and posterior bone of the pelvis, forming the ischial tuberosity for sitting.
- Pubis: The anterior bone of the pelvis, forming the pubic symphysis.

Functions:

- Support and protection: Encloses and protects the abdominal and pelvic organs.
- Attachment site: Provides attachment points for muscles and ligaments that support the spine, abdomen, and lower limbs.
- Weight-bearing: Carries weight from the upper body to the lower limbs during walking and standing.
- Childbirth: Provides a channel for the passage of a baby during childbirth.

Joints of the Pelvic Girdle:

- Sacroiliac joint: Between the ilium and the sacrum.
- Pubic symphysis: Between the two pubic bones.