With the exception of those osteophytes which form on the pelvis in consequence of inflammatory processes, or caries in the hip-joint, we find hyperostosis but rarely in the pelvic bones; whilst atrophy, especially of one half of the pelvis, is frequently met with after coxalgia and the several dislocations of the femur.

Caries and necrosis occur in the pelvis, chiefly as consequences of disease in the hip-joint; they arise sometimes also from the pressure of the bed, from the suppuration of lymphatic glands, muscles, etc.

Rickets and mollities ossium occasion the deformities of the pelvis already described.

On the subject of adventitious growths it may be mentioned, in addition to what has been stated already, that the caries which comes on in the bones of the pelvis is frequently of tubercular nature; and that cancer occurs in them not only in the form of primary tumors, which sometimes attain a great magnitude, and have an abundant bony skeleton, but also, secondarily, by the advance of cancer from the rectum, uterus, or vagina.