Non union femur fracture

hello sir,
Sir me qasim.Sir i had a fracture 12month's ago
which was gun shot wound in femur shaft and
doctor's have removed 3'in bone piece they implant
rod in it and in the center of shaft 25percent bone
piece which is healing doc's says that bone will
grow but till now i don't seen any bone growth in
bone loss area please tell me is bone growth is
possible i m 19 but 6feet hight please tell i shall
be greatfull to u>thankz