Pelvic girdle is basically a trough-shaped irregular supporting bone. It is placed between the axial skeleton and hind limbs. It is a structure that holds the weight of the entire body, aids in the locomotion process and attaches the lower limbs to the body. Pelvic girdle is attached posterior to sacrum. The sacrum and coccyx make a basin-shaped pelvis. There are two coxal bones in the pelvic girdle. Two halves of the pelvic girdle combine ventrally to give shaped to pubic symphysis that includes fibrous cartilage.
There are three bones i.e., upper ilium, ischium and inner pubis that form a coxal bone below the pubis. These three bones combine to form the hip bone. Acetabulum, a cup-shaped hollow cavity is there at the place where these three bones meet. Femur or thigh bone articulates with the acetabulum.Here is a quick look at the functions of the pelvic girdle:
- Two pelvic girdle come together to form a wide hollow space known as the pelvis.
- The pelvis plays the role of supporting and protecting the abdominal visceral structures.
- Pelvic girdle is the point of attachment of the hind limb bones
- It places the weight of the entire body on the hind limbs.
- Pelvic girdle renders strength to the sacral region.
- Pelvic girdle is the point of attachment of the leg muscles.
Girdles are basically the points that are close to the body’s axis. They are a part of the appendicular skeleton of the body. Apart from pelvic girdle the human body also consists of a pectoral girdle. Pectoral girdle is basically the structure that links the upper limbs to the body. It is a skeleton support from where the vertebrates’ forelimbs are linked. It consists of two bones, collar or clavicle bones and shoulder or scapula bone.