[Excessive nonspecific acral bone resorption of the margin of the distal phalangeal tuberosity of individual fingers].

The margin of the ungual tufts corresponds to an enthesis at which, besides the dominant formation of bone, a minimal reduction of bone is also possible. This bone resorption at individual digits may concern the distral part of this margin in an augmented degree and remains stationary after a certain extent. It is not connected to any definite disease.