The pelvic girdle is a bony structure that connects the lower limbs to the axial skeleton. It consists of two HIP bones, which are also known as the coxal bones or innominate bones. The HIP bones are connected to the sacrum and the coccyx by strong ligaments and muscles. The HIP bones are also connected to the femur, which is the longest bone in the body. Together, these bones form the pelvic girdle, which provides stability and support for the lower body.