L4/L5 complication post L5/S1 TLIF

[landmans]

I had a fusion L5/S1 and TLIF six weeks ago. I have recovered well and have almost no pain (nothing complex). I do have an issue on the right hand side where I am unable to support any weight on my right heel (cannot heel walk). The foot collapses. There is no foot drop but I have a SLAP when I walk. This nerve root I understand comes from L4/L5 and I believe this may just be part of the post operative "settling period" but it is a little frightening. Is this kind of symptom normal?