左为马凡综合征年轻女性的手，右为正常女性的手。两人身高均为188厘米，注意不同的是，左边的手有蜘蛛样指。
The hand at the left is that of a young woman with Marfan's syndrome, while the hand at the right is a normal male. Both persons were of the same height, 188 cm. However, note that the hand at the left demonstrates arachnodactyly.