A birth defect in which the upper portion of a limb is absent or poorly developed, so that the hand or foot attaches to the body by a short, flipperlike stump.

• 短肢畸形，海豹肢畸形一种先天性的缺陷，即肢体的上半部分没有或是发育不全，因此手或脚都是靠、短小的鳍状残肢与身体相连