Don't ever call this boy non-mobile. A couple weeks ago he squirmed himself between the bedrail and the mattress, and onto the floor. We found him in the morning, quietly admiring the underside of his bed. He never seemed to be uncomfortable, but we brought him to the doctor to evaluate his ankle, which was a tiny bit swollen and warm. And this is what they found...

Fractured tibia and fibula.
Pretty blue cast.

A very patient boy!
Rest assure, Julia has secured the side rail. There will be no more escapees!