The bipartient tendency of the articular surface of the trochlear notch in the human ulna.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D044466:Asian People; D004551:Elbow Joint; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D014457:Ulna / Q000033:anatomy & histology*