| diaphysial | Relating to a diaphysis. Synonym: diaphyseal. (05 Mar 2000) |
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| diaphysial aclasis | A disturbance of enchondral bone growth in which multiple, generally benign osteochondromas of long bones appear during childhood, commonly with shortening of the radius and fibula; the ill-effects are usually mechanical but malignant change is rare; autosomal dominant inheritance. Synonym: diaphysial aclasis, hereditary deforming chondrodystrophy, multiple exostosis, osteochondromatosis. (05 Mar 2000) |
| diaphysial centre | Primary centre of ossification in the shaft of a long bone. (05 Mar 2000) |
| diaphysial dysplasia | Progressive, symmetrical fusiform enlargement of the shafts of long bones characterised by the formation of excessive new periosteal and endosteal bone and irregular conversion of this cortical bone into cancellous bone; anaemia does not occur as a rule, as in osteopetrosis. Synonym: Engelmann's disease. (05 Mar 2000) |