This document discusses erosion and resorption of the terminal phalangeal tufts (tips of the fingers and toes) in various conditions. It includes 10 figures showing examples in Raynaud's disease, diabetic gangrene, psoriatic arthritis, leprosy, hyperparathyroidism, Lesch-Nyhan syndrome, epidermolysis bullosa, progeria, familial acro-osteolysis, and pachydermoperiostosis. Each figure illustrates the characteristic bone changes and soft tissue involvement in the distal phalanges.