In anatomy, a muscle that keeps a bone or joint steady while other muscles move; in medicine, a device that holds broken bones in place.
From Latin 'fixare' (to fix) plus '-tor' (one who does). Medical terminology coined in the 1800s as anatomy became more precise.
Your fixator muscles are the unsung heroes of movement—while your biceps get the glory for flexing, your fixators quietly hold your shoulder blade still, without which that bicep curl would be worthless.
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