半椎体畸形(hemivertebrae deformity)常见于脊柱侧弯畸形者,多呈楔形椎,由椎体的骨化中心一侧发育不全所致。可分为侧半椎体、前半椎体和后半椎体。可累及单个或多个椎体。胸椎半椎体常伴有肋骨发育畸形。C、D .为胎儿引产后脊柱DR正侧位,显示脊柱左侧弯畸形,并胸11半椎体畸形. ......