An avulsion, partial or complete, of the long finger extensor from the base of the distal phalanx. ... Synonym: drop finger, hammer finger, mallet finger. ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973
Rupture of the extensor tendon caused by a sudden flexion force on the end of the finger while it is actively extended; also known as mallet finger. Found on https://www.orthohealth.com/glossary/