Iwasawa et al. (1991) described a congenital curved nail of the fourth toe in 5 children, 3 of whom were sibs. No definitely identical condition was found in the literature.
Egawa (1977) described a 22-year-old woman ... Iwasawa et al. (1991) described a congenital curved nail of the fourth toe in 5 children, 3 of whom were sibs. No definitely identical condition was found in the literature. Egawa (1977) described a 22-year-old woman and her 14-year-old brother who had claw-like deformities of the fourth and fifth fingers and fourth toes. In the case of the fifth fingers, the fingernail was tubular, covering both the dorsal and palmar sides of the distal phalanx. A similar change was found in the toes. Soft tissue was missing from the tips of these fingers and toes. Similar findings were reported by Miura (1978) in 2 unrelated Japanese families, one with affected brother and sister and the other with 2 affected brothers. The terminal phalanx was shorter, shaped like a miniature spear, lacked a crescent-shaped cap, and, at the distal third, had a blunt, Y-shaped bony projection.