Acroosteolysis is resorption of the distal bony phalanges. Acroosteolysis has two patterns of resorption in adults:  diffuse and bandlike. The diffuse pattern of resorption has a widely diverse differential diagnosis which includes:  pyknodysostosis, collagen vascular disease and vasculitis, Raynauds neuropathy, trauma, epidermolysis bullosa, psoriasis, frostbite, sarcoidosis, hypertrophic osteoarthropathy, acromegaly, and advanced leprosy.The bandlike pattern of resorption may be seen with polyvinyl chloride exposure and Hadju-Cheney syndrome.A mnemonic commonly used for acro-osteolysis is PINCHFO.Pyknodysostosis, Psoriasis,
Injury (thermal burn, frostbite),
Neuropathy (diabetes),
Collagen vascular disease (scleroderma, Raynauds),
Hyperparathyroidism,
Familial (Hadju-Cheney, progeria), 
Occupational (polyvinyl exposure),
Acroosteolysis may be associated with minimal skin changes or with ischemic skin lesions that may result in digital necrosis. : 665

See also
Nail anatomy


== References ==
Pharmacology
Brand names
Ibandronic acid is marketed under the trade names Boniva in the US, Bondronat in Europe, Bonviva in Asia, Bandrone in India, Ibandrix in Ecuador, Adronil in Pakistan, Bondrova in Bangladesh and Bonprove in Egypt, Fosfonat in Mexico. References
External links
"Ibandronic acid". Drug Information Portal. U.S. National Library of Medicine.