there is a surgery but thats a complicated one. Chinese girls usually get that done.
The cut your bone (tibia and femula).. let your bone grow with certain medications and you are bed ridden for months and then they do the surgery and attach your feet/ bone.
Thats the only proven thing uptill now for height imporvent.
Check it
www.zenggao.com/english/index.htm
Or you can try growth hormone which salman khan has been doing for last 15 years did but thats not affordable for an ordinary person.. growth hormone makes your grow your muscles mass, bone density as well as bone lengths a bit but costly and lenghthy but with least side effects.