Does Gabapentin Treat Nerve Injury Other Than Pain Also?

Hi I had injured my right foot while playing cricket couple of months back and CT scan revealed a minor metatarsal fracture which was treated by putting on a fibreglass cast. However I was unable to walk and then my doc suspected I also had a soft tissue / nerve injury in the foot and prescribed gabapentin. After about a week of taking 100mg gabapentin twice daily, my pain has reduced substantially and I am now able to walk properly and the tingling sensation in the foot has gone.What I want to know is that does gabapentin TREAT a nerve injury or only reduce the pain till the time one is taking the medicine? Will the pain come back once I stop taking it?