How do you pronounce the word Ischium?

Answer 1

Officially, the word is pronounced "ISS-kee-um," but even most doctors and other health professionals anglicize it to "ISH-ee-um."

This goes for the adjectival form (ischial) as well, which should be "ISS-kee-ul" but which is almost always heard as "ISH-ee-ul."

The confusion arises because of the s-c-h combination, which in English/German words is usually parsed sch = sh. In this word, however, it represents the Greek sound SK, spelled here as s-ch.

At what point will dictionaries give in to the common [mis]usage?

Answer 2

The word "ischium" is pronounced as "I-skee-um."