| 释义 |
piriformis (muscle) pi·ri·for·mis (mus·cle) [TA] muscle extending from pelvis into gluteal region; origin, margins of pelvic sacral foramina and greater sciatic notch of ilium; insertion, upper border of greater trochanter; action, rotates thigh laterally; nerve supply, nerve to piriformis (sciatic plexus). Synonym(s): musculus piriformis [TA], musculus pyriformis, piriform muscle |