Re: Synovial Cysts
This is a question best posted to your surgeon. I suppose the answer would depend on the attitude of your surgeon and whether he is removing bone along with the cyst. If he feels the decompression is creating any spinal instability, then he would perform a fusion instead...I would think!
With discectomy, most surgeons do not like to repeat it too often, usually recommending a fusion on the third attempt. I'm sure there are exceptions, but the third time seems to be fairly common.
With each additional entry over the same incision, the risk of infection increases, as well as some other issues.
From what I could tell from doing a little online research, there is not definitive proof that fusion will stop the formation of synovial cysts. Some articles state that once there is not any movement at the facet joint, the synovial sac will not fill will fluid and a cyst will not form. But I found a comprehensive study from the NIH done over a study period of ten years that indicated there was no difference between those patients receiving fusion and those receiving decompression and removal of the cyst.
I hope your surgeon will be able to provide you with appropriate information, so you can make an informed decision. You may want to get more than one opinion since synovial cysts are not all that common in the spine.