the.com/clavicle

the only long bone you can break by reaching out to catch yourself

means The collarbone — the slender curved bone connecting your breastbone to your shoulder blade.

from From Latin clavicula, 'little key,' a diminutive of clavis, 'key' — the same root behind 'conclave' and 'clavier.' The bone earned the name from its shape, which to Roman eyes resembled a small key or bolt; some say it also rotates like a key turning in a lock as the shoulder moves.

first to break
most commonly fractured bone in the human body
last to fuse
finishes growing around age 25
name origin
latin for little key, from how it pivots
evolutionary brace
holds your arms out for swinging and throwing
birth casualty
sometimes snaps during difficult deliveries, then heals fine
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