Acroosteolysis

Acroosteolysis is resorption of the distal bony phalanges.

A mnemonic commonly used for acro-osteolysis is PINCHFO. Pyknodysostosis, Psoriasis, Injury (thermal burn, frostbite), Neuropathy (diabetes), Collagen vascular disease (scleroderma, Raynaud's), Hyperparathyroidism, Familial (Hajdu-Cheney, Progeria), Occupational (polyvinyl exposure).

Acroosteolysis may be associated with minimal skin changes or with ischemic skin lesions that may result in digital necrosis.