articular disc of distal radioulnar joint

ar·tic·u·lar disc of dis·tal ra·di·o·ul·nar joint

the disc that holds together the distal ends of the radius and ulna; it is attached by its apex to a depression between the styloid process and the distal surface of the head of the ulna, and by its base to the ridge separating the ulnar notch from the carpal surface of the radius.
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One had to say something if only to assert oneself against that wearisome, passionless and crushing uproar.
There are times when it is one's duty to assert oneself.
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