. Living anatomy and pathology; . Fig. 1.—Normal bone: , zone of proliferation. Fig. 2.—Rhachitic bone: Z. P., zone of proliferation. The clinical diagnosis of rhachitis from diseases which may sim-ulate it need not be fully stated here. A few words, however, mayaid us in making the best use of our Roentgen picture. In chon-drodystrophia foetalis the trunk is normal while the extremities areshort and deformed. The enlargements of the ends of the long bonesare due to overgrowth of the periosteum, instead of to changes in theepiphyseal cartilage, and the zone of proliferation is narrowe
. Living anatomy and pathology; . Fig. 1.—Normal bone: , zone of proliferation. Fig. 2.—Rhachitic bone: Z. P., zone of proliferation. The clinical diagnosis of rhachitis from diseases which may sim-ulate it need not be fully stated here. A few words, however, mayaid us in making the best use of our Roentgen picture. In chon-drodystrophia foetalis the trunk is normal while the extremities areshort and deformed. The enlargements of the ends of the long bonesare due to overgrowth of the periosteum, instead of to changes in theepiphyseal cartilage, and the zone of proliferation is narrower thanin rhachitis. In rhachitis there is an absence of the disproportionbetween the trunk and the limbs which is seen in chondrodystrophiafoetalis. In chondrodystrophia foetalis also the epiphyseal lines insteadof being irregular are straight, although much narrowed, and theshafts of the bones are often thick and striated. The characteristicsymptoms of osteomalacia, a very rare disease in childhood, do not 108 THE ROENTGEN R
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