Quiz 17 – 2yo boy with a waddling gait

This 2 yo boy was brought to the clinic with an abnormal gait. His labs revealed mildly elevated calcium levels and low alkaline phosphatase activity.

Q 1) What is the diagnosis
Q 2) What is the underlying pathophysiology

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4 comments:

Anonymous June 4, 2009 at 12:05 PM  

This is TRICK(y)ets :))))

Dhasa June 16, 2009 at 8:43 PM  

How long are you going to make us wait this time :)

jipz June 17, 2009 at 2:44 AM  

hypophosphatasia

Anonymous June 24, 2009 at 11:34 AM  

I thought hypoohosphatemic rickets has normal serum calcium. This seems like an abnormality in alkaline phosphatase.

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