Orphaned inodes in SSD in MacBook Pro Early 2011
Orphaned inodes, are common, but they do normally get cleaned, latest after a restart.


  This is not a bug, it's the journaling clearing up a normal situation.
  An "orphaned" inode in this context is one which has been explicitly
  deleted, but which was still open by some process when it was deleted.
  The file vanishes completely from the directory structure, but normal
  Unix semantics require it to remain present on disk until the last
  user of that file closes it. At that point, the inode itself (as
  opposed to the directory entries pointing to it) is deleted, and the
  disk space used by the file is cleaned up.


In you case you use a application that does not release them (even if marked as deleted).

You could close apps to check, or use a terminal 

sudo iosnoop


Type Password and wait and observe.

Look for who is still writing to the SSD.