Hi...
In case there is no problem in walking, if u can take weight equally on both ur legs and as far as u don't notice any raise in body temperature or temperature increase around that part, there is no issue with the implants in Tibia or fibula.
Next Steps
check for any pain from lower back, it might radiate to leg( s)
Health Tips
try keeping the part warm if there is no sign of inflammation ( redness, swelling, increase in temperature, difficulty in putting weight on leg)