Trident hand

What it means

A hand in which the fingers are of nearly equal length and deflected at the first interphalangeal joint, so as to give a forklike shape consisting of separation of the first and second as well as the third and fourth digits.

This abnormality is often seen in patients with achondroplasia.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: trident abnormality · trident deformity