@whimsicallyinpain
I am not an expert on this for sure but what I read about this seems to be that baseline measurements were taken at the beginning of your procedure using a device to test nerve stimulation and transmission of signals and then it was used to test throughout and at the end which guides the surgeon on how much release is needed and where. This helps to reduce the need for revision surgery in the future.
https://checkpointsurgical.com/resources/use-of-the-checkpoint-guardian-nervestimulator-in-tarsal-tunnel-release-andassociated-neuroplasty-of-the-lowerextremity
It seems like you had a successful procedure and I am so happy for you!