the.com/shoulder

The only joint that traded stability for the freedom to throw a punch.

means The joint connecting the arm to the trunk, made of the bones, muscles, and ligaments around it — also the act of taking on a burden or pushing through.

from From Old English 'sculdor,' a word shared across the West Germanic family (compare Dutch 'schouder' and German 'Schulter'). Its deeper roots are murky — etymologists can't trace it confidently past Germanic — though some have linked it, uncertainly, to a sense of 'shovel' or 'shield-shaped flat surface,' fitting the broad blade of the shoulder bone. The figurative uses — to 'shoulder' a load, to give someone the 'cold shoulder' — grew from the body part that has always done our heavy lifting.

range
Most mobile joint in the human body
dislocations
The most frequently dislocated major joint
muscle crew
Four rotator cuff muscles, one fragile alliance
throwing arm
Humans throw far better than any other primate
the ball
Held in a socket too shallow to be safe
for instance

shoulder of mutton sail — a four-sided sail configuration used on traditional sailing vessels since the 18th century

shoulder season — travel periods like april-may or september-october between peak and off-season at tourist destinations

hard shoulder — emergency lane on uk motorways and european highways for vehicle breakdowns

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