Skip to Main Content
Chapter 57

++

1. Achondroplasia

++
Figure 57-1

Achondroplasia.

An AP radiograph of a 5-year-old child shows short femurs. The distal femoral metaphyses are flared and there is central cupping. The iliac bones are short. The acetabula are horizontal. There are narrow interpedicular distances in the lumbosacral spine.

Graphic Jump Location
++

2. Achondroplasia

++
Figure 57-2

Achondroplasia.

An AP radiograph of an 11-year-old child shows short and broad metacarpals and phalanges. There is disproportionate shortening of the metacarpals.

Graphic Jump Location
++

3. Achondroplasia

++
Figure 57-3

Achondroplasia.

A lower leg radiograph of an 11-year-old shows more severe shortening of the tibia than of the fibula.

Graphic Jump Location
++

4. Achondroplasia

++
Figure 57-4

Achondroplasia.

The pelvis of a 10-year-old child has small rectangular-shaped iliac bones. The interpedicular distances in the lumbosacral spine are narrow. There is bilateral coxa valga. The femoral heads are enlarged and the femoral necks foreshortened.

Graphic Jump Location
++

5. Thanatophoric dysplasia type I

++
Figure 57-5

Thanatophoric dysplasia type I.

A, B. Radiographs of a stillborn fetus show thin vertebral bodies, short ribs, a small pelvis, and shortened extremity long bones. There are bowing deformities of the femurs.

Graphic Jump Location
++

6. Hypochondroplasia

++
Figure 57-6

Hypochondroplasia.

A. The femurs and lower legs are short and there is metaphyseal flaring. The distal aspects of the fibulas are elongated relative to the tibias. B. There is only mild undergrowth of the pelvis. The lumbar interpedicular distances are normal in this child. C. The skull is normal.

Graphic Jump Location Graphic Jump Location
++

7. Metaphyseal chondrodysplasia; Schmid type

++
Figure 57-7

Metaphyseal chondrodysplasia; Schmid type.

An upright radiograph of a 1-year-old child shows cupping, fraying, and splaying of the metaphyses. There are bowing deformities of the femurs and tibias. Shortening of the long bones disproportionately involves the femurs.

Graphic Jump Location
++

8. Adenosine deaminase deficiency

++
Figure 57-8

Adenosine deaminase deficiency.

A-C. Radiographs of an infant show square iliac wings, flared metaphyses, widened growth plates, metaphyseal irregularity, flared anterior rib ends, and lack of a normal infantile thymic contour.

Graphic Jump Location Graphic Jump Location
++

9. Pseudoachondroplastic dysplasia

++
Figure 57-9

Pseudoachondroplastic ...

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.