Located or occurring outside a capsule, especially the fibrous tissue surrounding a joint, organ, or lens.
From Latin 'extra' (outside) + 'capsula' (small box or container, from 'capsa'). Medical term developed to specify anatomical locations relative to protective capsular structures.
Your joints have tough capsules holding them together—extracapsular fractures are the tricky ones that break outside this protective covering, making them more serious.
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