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The pelvic girdle functions to attach the lower limbs to the axial skeleton. It also provides protection to internal organs located in the pelvic region. In contrast to the simplicity of the pectoral girdle, the pelvic girdle is quite complex. This complexity is related to the development of the muscles for maintaining posture and movement of the lower appendages. The pelvic girdle is comprised of the right and left coxal bones. The coxal bones articulate with the sacrum posteriorly and with each other anteriorly. The coxal bones form a strong platform for the attachment of the lower extremities. Each coxal bone is formed by the fusion of three bones, the ilium, ischium and pubis. |
