Abnormal finger phalanx morphology Abnormal hand bone ossification Abnormal finger phalanx ossification 2024-07-05T10:44:08Z Any abnormal process of ossification of the phalangeal bones, which normally are ossified from the body and proximal extremity. Ossification of the body commences during the eighth week of fetal development. Ossification of the proximal extremity commences in the bones between the third and fourth years.