A small wrist bone shaped like a hook, located on the pinky side of your hand that helps grip objects.
From Latin hamatus meaning 'hooked' or 'having a hook,' derived from hamus meaning 'hook.' The bone is named for its distinctive hooked shape.
Your hamatum bone is literally what makes a tight fist possible—it's the attachment point for muscles that control your pinky and ring finger, yet most people never know this tiny bone is the secret to their grip strength.
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