Tall stature is common and usually familial. A tape measure separates most of those children from the few with an underlying condition. An arm span noticeably greater than height, with long fingers and a thin build, is worth a closer look.
- Measure arm span fingertip to fingertip with arms outstretched
- Compare with height — a ratio above about 1.05 in a child is a flag
- Plot height against mid-parental height before worrying
- Look for the wrist and thumb signs of joint hypermobility
Why it matters
Two measurements in clinic can pick out the rare tall child who needs a cardiac and genetic assessment.
Read the rest in the app
You have read your two free briefings this month. The app carries all 27 specialties, every morning, free — and this finding is waiting in it.
Scan to keep reading on your phone. No account needed to start.
Tomorrow morning, before your first patient
One edition a day for paediatrics, written by the desk, every claim tied to its paper. Six minutes.
Get the app — free