Shearer's knuckles.
D000382:Agricultural Workers' Diseases / Q000175:diagnosis* / Q000473:pathology; D000818:Animals; D003937:Diagnosis, Differential; D004387:Dupuytren Contracture / Q000175:diagnosis; D005385:Fingers / Q000473:pathology; D006801:Humans; D006984:Hypertrophy / Q000175:diagnosis / Q000473:pathology; D012867:Skin / Q000473:pathology; D012871:Skin Diseases / Q000175:diagnosis* / Q000473:pathology; D014935:Wool