A case of symphalangy has been traced through six generations. In the course of six generations, seventeen out of nineteen individuals are affected with this trait. In all individuals, with the exception of one young woman, the fifth finger is bent mesially to a very marked degree at the junction of the middle and distal phalanges. In this exceptional case there is no ankylosis in any of the joints of the index finger of the right hand. Symphalangy is symmetrical in all other members of the family.
Proceedings of the Iowa Academy of Science
©1938 Iowa Academy of Science, Inc.
Stiles, Karl A. and Weber, Robert A.
"Hereditary Fusion of the Proximal Phalandeal Joints,"
Proceedings of the Iowa Academy of Science, 45(1), 309-309.
Available at: https://scholarworks.uni.edu/pias/vol45/iss1/82