Friday, June 20, 2008

68 - trident hand

the first x ray is the trident hand of a child while the second is the trident hand of the adult .

question : trident hand is seen which of the following conditions ?

a. mucopolysaccaridosis
b. achondroplasia
c. diaphyseal achlasia
d. chondrodysplasia

answer : b. achondroplasia .

other abnormalities of achondroplasia are :

1. square iliac wings
2. champagne glass pelvic cavity
3. short, narrow sacrosciatic notch
4. posterior scalloping of vertebrae
5. small funnel shaped foramen magnum

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