Pincer nails in a 56-year-old female patient. (a) Frontal view. (b) Dorsal view. (c) X-ray dorsal view of the distal phalanges shows the lateral deviation of the terminal phalanges and the medial hook-like exostoses at the base of the bone. (d) X-ray lateral view demonstrates the distal dorsal traction osteophyte.
