A ring that is being worn on a finger may become caught on a nail, hook or in machinery. Urbaniak et al developed a simple classification for this kind of injury.
Injuries that may occur to the finger:
(1) laceration
(2) degloving injury
(3) amputation
Injury
Type
laceration with adequate circulation
I
laceration with inadequate circulation or partial degloving injury
II
complete degloving injury
III
complete amputation
III
A type II or III injury often requires microvascular surgery to restore circulation to the digit.
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