. Roentgen interpretation; a manual for students and practitioners . Fig. 55.—Osteogenesis imperfecta. Differential diagnosis is from lues and osteomyelitis. Lues ismore apt to be a generalized process, the periosteum is less elevatedand epiphyseal dislocation does not appear. In osteomyelitis thereis destruction of the shaft which is unaffected in scorbutus, and theclinical picture is, of course, quite characteristic. 78 BOXE PATHOLOGY Achondroplasia (Chondrodystrophy Fetalis) .—The bones in thiscondition are shortened, compact and at times bowed. The epiphy-seal Hne is very thin and sharply
. Roentgen interpretation; a manual for students and practitioners . Fig. 55.—Osteogenesis imperfecta. Differential diagnosis is from lues and osteomyelitis. Lues ismore apt to be a generalized process, the periosteum is less elevatedand epiphyseal dislocation does not appear. In osteomyelitis thereis destruction of the shaft which is unaffected in scorbutus, and theclinical picture is, of course, quite characteristic. 78 BOXE PATHOLOGY Achondroplasia (Chondrodystrophy Fetalis) .—The bones in thiscondition are shortened, compact and at times bowed. The epiphy-seal Hne is very thin and sharply defined and closes considerablyearlier than the normal. This results in an adult whose long bonesare very much shortened, with corresponding loss of weight. Thisprocess is said to involve only those bones in which ossification hasbegun before the sixth Fig. 56.—Osteomalacia in a child. Osteogenesis Imperfecta (Fragilitas Ossium, Periosteal Dysplasiaor Osteopsathyrosis).—In the infantile form of this disease the bonesshow great diminution in lime salts and thinning of the cortexwithout changes in size. This results in a weakening of the structureof the bones and multiple spontaneous fractures occur, usuallyfollowed bv a fair amount of callous formation. DISEASES OF NUTRITION 79 In the adult form the bones are nearly normal in size and calciumcontent but usually present considerable deformity as a result ofthe multiple spontaneous fractures which the patient has suffered.
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