Acroosteolysis
{{Short description|Resorption of hand bones into the blood}}
File:Acroosteolysis- x-rays.png
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, Raynaud's neuropathy, trauma, epidermolysis bullosa, psoriasis, frostbite, sarcoidosis, hypertrophic osteoarthropathy, acromegaly, and advanced leprosy.Yu, Joseph. Musculoskeletal Imaging, Case Review Series. 2008.{{cite web|last1=Romero|first1=Belinchón|last2=Ramos Rincón|first2=J.M.|last3=Reyes Rabellc|first3=F.|title=Nail Involvement in Leprosy|url=http://www.actasdermo.org/en/nail-involvement-in-leprosy/articulo/90143730/?pubmed=true|website=ACTAS Dermo-Sifiliograficas|publisher=Academia Española de Dermatología y Veneralogía|access-date=28 June 2014|archive-url=https://web.archive.org/web/20150428054901/http://www.actasdermo.org/en/nail-involvement-in-leprosy/articulo/90143730/?pubmed=true|archive-date=28 April 2015|url-status=dead}}{{cite book|last1=Baran|first1=Robert|last2=de Berker|first2=David A. R.|last3=Holzberg|first3=Mark|last4=Thomas|first4=Luc|title=Baran and Dawber's Diseases of the Nails and their Management|date=July 23, 2012|publisher=Wiley|isbn=978-0470657355|edition=4th|url=https://books.google.com/books?id=UsC8VCA4JQgC&q=acroosteolysis&pg=PA302|access-date=28 June 2014}}
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.{{cite journal |last1=Jones |first1=Jeremy |title=Acro-osteolysis (mnemonic) {{!}} Radiology Reference Article {{!}} Radiopaedia.org |url=https://radiopaedia.org/articles/acro-osteolysis-mnemonic?lang=us |website=Radiopaedia |doi=10.53347/rID-12202|doi-access=free }}
Pyknodysostosis, Psoriasis,
Injury (thermal burn, frostbite),
Neuropathy (diabetes),
Collagen vascular disease (scleroderma, Raynaud's),
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.Freedberg, et al. (2003). Fitzpatrick's Dermatology in General Medicine. (6th ed.). McGraw-Hill. {{ISBN|0-07-138076-0}}.{{rp|665}}