Welcome to Ben’s Friends.
There are a few variables to your question here and in all honesty it really is a question that only a neurosurgeon could answer. For some people movement could have a minimal impact and yet for others it could well be catastrophic. Depending on the amount of movement and the surrounding structures it could be deemed as too greater risk to surgically intervene but by the same accord it could be deemed too greater risk not to intervene. Due to this my suggestion would be to make an appointment with your neurosurgeon, if possible, to obtain a comprehensive opinion on your own personal situation.
Some surgeons may be of the opinion that some movement maybe within the safe parameters and if your symptoms are deemed manageable any intervention could be seen as too higher risk. Although my own neurological situation is different, my symptoms were seen as manageable by the medicos. That was until they obtained images (CT), then they could see that things could only progress in a negative way and decided it would be better to intervene now rather than allow things to progress.
Each case needs to be individually assessed by a fully qualified neurosurgeon.
Merl from the Modsupport Team