There is a study club for orthopedic surgeons called Hablus Society
and I'm wondering about the spelling "Hablus."  Is it spelled
correctly?

Hello.

Apparently, it's called the "Habilis Society."

The web page of Thomas E. Trumble, M.D. of the University of
Washington Medical Center indicates that he's a member of the "Habilis
Society."  For more information about the group, you might contact Dr.
Trumble.
http://www.orthop.washington.edu/faculty/Trumble

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search strategy:
"habilis society"

I hope this helps.