Sysarcosis or Syssarcosis: How To spell?
The word Sysarcosis is misspelled against Syssarcosis, a noun meaning "The junction of bones by intervening muscles."
Syssarcosis has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings sy & arcosis which should not be misspelled with single 'S'
Wrong Spelling:  sy-s-arcosis  Correct Spelling:  sy-ss-arcosis 
Find more incorrect spellings of Syssarcosis to spell right way.