Hi Dear jimmy,you got polio
in your child hood and now having week muscles and one limb shorter than other, by surgical means,sorry ,there is now surgical way to improve your weakness and increase your shortened limb,as the damaged done tour nerve
by polio virus is permanent and it had caused a perm net damage to your muscles ,which resultant in shorten in your limb.
you can improve your muscle strength with physiotherapy
( exercise)you should not loose your confidence ,and you should know that great people in this world were handicapped ,take the example of Miss Hellan Killer , has discovered learning system for blind was herself blind.leo pastuer discover of many important thing was handicaped