Problem 7 years after lumbar spine fusion

[Roblondon]

Hello...I had lumbar spine fusion on L4-5 seven years ago and have had no problems whatsoever until Jan 1st of this year when something just clicked in my back.Below is part of my MRI result recieved yesterday.......what i am worried about is will i need more surgery or is this a condition that can be dealt with by other methods.......i am 59.
I would appreciate any help.

All of the lumber intervertebral discs are degenerate
Extensive posterior pedicule screws are identified at the L4 and L5 levels..There is a central disc protusion at the L 3-4 level which does cause mild thecac sac commpression at this position.The thecal sac here is probabably significantly commpressed.
There is further disc protusion at the L4-5 level which is pushing the thecal sac posteriorly and does extend a little bit laterally into the origin of both lateral recesses where it may indent the descending S-1 nerve roots as as they enter the lateral recess bilaterally.The appearances here are probably significant as well.
Appearances suggest two central disc protusions,one at L 5-S1 and one at L 3-4.