Avulsion versus evulsion?

[CindyB]

From Stedman's:
Avulsion = A tearing away or forcible separation.
Evulsion = A forcible pulling out or extraction.

Are they different? I've always thought they were but I'm finding
references that they are synonyms.

If there is a difference, does anyone have a good explanation of when
to use which one?

Thanks! (I think I used to know this once.)

[Ed Chait]

Post by CindyB
Avulsion = A tearing away or forcible separation.
Evulsion = A forcible pulling out or extraction.
Are they different? I've always thought they were but I'm finding
references that they are synonyms.
If there is a difference, does anyone have a good explanation of when
to use which one?
Thanks! (I think I used to know this once.)

My understanding is that an avulsion is when something is torn or stripped
from the outside of a part, such as the skin being avulsed from a finger,
whereas an evulsion is when something is torn out from the inside to the
outside, such as when a martial artist reaches in and tears someone's still
beating heart out in a cheap "B" movie.

Of course, I have no idea where I came to this understanding of that
distinction, so take it with a grain of salt.

ed

[Melinda Meahan - take out TRASH to send]

Post by CindyB
Avulsion = A tearing away or forcible separation.
Evulsion = A forcible pulling out or extraction.

An evulsion is an extruding type of pulling out, and an avulsion is a
ripping-apart type of pulling out. A degloving injury is a type of
avulsion, and a hernia is an type of evulsion.