has part has part has_part characteristic of abnormal stapes morphology abnormal stapes head morphology 2017-11-15T14:32:04Z abnormal caput stapedis morphology any structural anomaly of the concave portion of the stapes, located on top of the neck, which articulates with the lenticular process of the long limb of the incus through the incudostapedial joint MPheno.ontology abnormal stapedial head morphology MP:0030402 stapes bone