I am praying for something BIG TK, something for the sake of our friend TK, a revision which goes exceptionally smoothly, which produces the restoration of life you seek, which works and works well, because the issues are all addressed, AND, a recognition by insurance the revision is necessary as a derivative correction for the sake of remediating the issue which was originally caused by workplace problems, and BUT FOR the work place problems and the surgery they necessitated, your subsequent fall would NOT HAVE produced the need for correction or revision, let alone a possible need for a possible chirpractic visit to address the simple issues a fall would inflict on a healthy body.

Hope you have a Work Comp counsel, because all is not necessarily lost.... and reality be known, I provided strategic gravamen to my counsel because the insuror needed to be educated on the language of the policy of insurance. That was my specialty. We took it to favorable conclusion. Hoping and praying it is possible in your case as well.

Praying all of these difficulties you face right now will be grasped in the ever loving hands of God and dropped in the insuror's hands for complete handling.
In this I pray!
Mark56